oracleasm querydisk multipath. Database administrators can define the DB_RECOVERY_FILE_DEST parameter to the path for the Fast Recovery Area to enable on-disk backups, and rapid recovery of data. Terms: Operating System: Enterprise Linux 4 U5 (RHEL4 U5) Oracle: 10. ORACLEASM_SCANEXCLUDE="sdb sdc". 之后,PST会被缓存在ASM缓存中,以及GMON的PGA中并使用排他的PT. You can use any of the below commands to delete the multipath or local disk. First, Modify scan ip's in DNS. ASMLib examines each disk in the system. Such kind of disk header corruption/missing issues can be taken care by running kfed with ‘repair’ command. If the same disk appears under multiple paths, then it causes errors. # oracleasm querydisk -p ASMDISK01 Disk "ASMDISK01" is a . oracleasm createdisk vol1 /u01/app/oracle/data. Hi We have SAN disk partitions presented to 2 Redhat Linux servers, running Oracle RAC (cluster) ASM. Installation et configuration OracleASM RED HAT 6. d/oracleasm querydisk /dev/mapper/* check whether the oracleasm lib driver package is installed correctly. Tuto pour installer oracleasm sur un red hat6 , valable également sur un Oracle Linux 6. Creation of ASM disks on Oracle Linux using. 重启multipathd服务: · 通过multipath命令查看多路的配置是否合理。 · 检查集群和数据库是否能正常启动 · 实际上数据是存储在磁盘上,单路径设备和多路径设备只是我们对于 . In a multipath configuration, please use the multipath name [[email protected] ~]# oracleasm listdisks | xargs oracleasm querydisk -p Disk “ADMIN_DG” is a valid ASM disk. #!/bin/bash ORACLEASM=/etc/init. Install #OUI and DBCA may be used for installation from any node in RAC #The packages are located in OS dvd media in #. 4 Grid and Database on Oracle Linux 7. Now check for device with 65,33. Step 6: #create Partition or relabeled it. One would assume that Oracle ASMLib would be available to configure Oracle ASM devices but to my surprise realized that Oracle has now decided to. Do a listing of the device using ls – ltr command on all the nodes in the cluster. This disk was based on a multipath device called mpath13. Applies to: Oracle Database - Enterprise Edition - Version 11. To administer the Oracle Automatic Storage Management library driver and disks, use the /usr/sbin/oracleasm initialization script with different options, as described in the following table: Table A-4 Disk Management Tasks Using ORACLEASM. ㅁ [racdb1, racdb2 RHEL] /etc/multipath. recommended 60000ms # oracleasm querydisk /dev/sdn1. Disk “OCR_VD_NEW_1” is a valid ASM disk [[email protected] ~]$ oracleasm querydisk OCR_VD_NEW_2. and later (package oracleasm-support-2. Disk "VOL4" is a valid ASM disk on device [8, 1]. 检查确保表空间是自包含也就是检查表空间的对象不依赖于其它表空间的对象而独立存在. On Linux, ASM is capable of referencing disks as raw devices or by using the ASMLib software. Stop DB and ASM: # ORACLEASM_SCANORDER: Matching patterns to order disk scanning ORACLEASM_SCANORDER="mpath dm" # ORACLEASM_SCANEXCLUDE: Matching patterns to exclude disks from scan oracleasm querydisk -d DATA01 Disk "DATA01" is a valid ASM disk on device [202,33]. On other nodes, just scandisks & listdisks. group, otherwise you might risk data integrity. How to Configure LUNs for ASM Disks using WWID, DM-Multipathing, and ASMLIB on RHEL 5/OL 5 and RHEL 6/OL 6 (Doc ID 1365511. [[email protected] ~]$ oracleasm querydisk -d ASMDISK01 Disk "ASMDISK01" Is a valid ASM disk On device [8,17] As see you, ASMDISK01 is valid ASM disk on device [8,17]. The dm should be redundant, but we include it. Heartbeat Dead Threshold: is the number of two-second iterations before a node is considered dead. If you are using ASMLIB Support Tools 2. d/oracleasm listdisks ASM1 ASM2 ASM3. 2)の新機能Oracle ClusterwareおよびOracle ASM 11g /usr/sbin/oracleasm querydisk {DISKNAME ¦ devicename} listdisks . ASMLib will then ignore them, . 32-xx) using HP P4000 as our iSCSI shared storage solution. The oracleasm services creates the necessary library interface through which ASM disk devices are made available to Oracle ASM (instance. When running oracleasm querydisk VOL1 you will get in addition the major - minor numbers, that can be used to match the physical device, ie: [[email protected] ~]# /etc/init. d/oracleasm querydisk -d DATA01 Disk "DATA01" is a valid ASM disk on device [65,33] Here, it is showing DATA01 disk on 65, 33 device. Configure ASMLIB to use multipath (from each node on RAC environments): By any path the ASMLIB can found the disks, but, the best path is using the multipath : Modify in /etc/sysconfig/oracleasm : ORACLEASM_SCANORDER="dm" ORACLEASM_SCANEXCLUDE="sd". During labelling using the oracleasm createdisk , since we use the LUN name I always thought that asmlib dealt only with the names of devices (Powerpath name in this case). 4) did not have method to access raw disk devices using non-buffered IO. So, we decided to use GoldenGate. Сделать это можно двумя способами: 1. d/oracleasm This usually means that ASM is NOT using the multipath emcpower device. Add the new disk to the disk group. The querydisk option will list the major . Partition disks, Create Oracle ASM disks and Create Oracle. d/oracleasm querydisk VOL1 Disk "VOL1″ is a valid ASM disk on device [8, 17] You can find out which devices this represents with the. 1 Determine the Correct Oracleasm Package Determine which kernel you are using by logging in as root and running the following command: uname -rm For example: # uname -rm 2. You can check using querydisk too : # /etc/init. by Prakash on December 28, 2014 • Permalink. This StyleSheet can be used directly by languages such as Chinese, Japanese and Korean. The multipath device /dev/multipatha certainly matches. To make the disk available enter the following commands: 7. d/oracleasm listdisks VOL1 VOL2 VOL3 # The disks are now ready to be used by ASM. d/oracleasm querydisk -d $ASM_disk | awk . d/oracleasm querydisk -d ARC1 Disk "ARC1" is a valid ASM disk on device [8, 38]. conffiles should be edited identically on each of the cluster nodes. To generate the SQL commands, connect to the OMS database and run below SQLs to generate the commands. # Automatic Storage Management library kernel driver. linux下asm磁盘扩容,此次扩容添加4块480G磁盘 第一步:multipath -ll : 查看多路径映射磁盘(两节点都做) 配置 /etc/multipath. Note 1: You can ignore prerequisite checks for - swap size - pdksh package - ASM Device check if #oracleasm querydisk -p is valid . From the task selection bar, select Schema. /oracleasm querydisk DATA1 Disk "DATA1" is labeled for disk "DATA4" Well, something was wrong, but did not know what. Telefón: 0905 644 485 | dell laptop with number pad. Configure SCSI_ID to Return Unique Device Identifiers: 2. d/oracleasm querydisk -d DSKORA1 Disk "DSKORA1" is valid ASM disk on device [253, 6] Good Luck ! Share this post: on Twitter on Facebook on Google+. A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more. How to map Device Mapper Multipathing and ASM, this could be useful when using [[email protected] ~]# oracleasm querydisk -d data_disk1 Disk . ASM is not looking at the multipath disks but a single disks. It do not lists any disk which is missing. First, it allows exclusion of certain disks. Example 1: [[email protected] ~]# /etc/init. Automatic Storage Management ( ASM) is a new feature in Oracle 10g onward provides a state of the art storage for Oracle database files. If the queried device is not an ASM disk, then FAILED will be displayed between the brackets. Prepare new disk devices for ASM with ASMLib (multipath) 1. For example: ORACLEASM_SCANEXCLUDE=sd ORACLEASM_SCANORDER=emcpower. □ querydisk: Use this option to determinate whether a disk device or disk name is being used by the ASM library driver. Find out ASM disk mapping: # oracleasm listdisks. Disk "DATA" is a valid ASM disk. 然后在服务器上通过 multipath [[email protected] mnt]# oracleasm querydisk DATA. 4) the kernel driver package 'kmod-oracleasm' is available directly from Red Hat, and can be installed from the "RHEL Server Supplementary (v. 当然,我们也可以选择在一台服务上安装不同版本的Oracle软件. d/oracleasm listdisks—list all the oracle asm disk. I found however, it was done for RHEL/OEL 6 and older, and I’m in OEL7. 磁盘名被限制为30个字符。它们必须使用字母开头但可以由其它ASCII字符组成,包括:大写字母, 数字和下划线。每一个被创建成功的磁盘被标识为ASMLIB磁盘并且会被显示在oracleasm文件系统 中/dev/oracleasm/disks/。. You download the ASM software ASMLib software from OTN. But it’s not direct, which causes some manual work. The ASMLIB configuration file . Configure Oracle ASM Disk. Stop DB and ASM:-- crsctl stop cluster -all 2. d/oracleasm createdisk ASMDISK1 /dev/loop1 ASM with Multipathing: [Doc ID 294869. init Load and initialize the ASMLib driver. April 1, 2011 dbhk Leave a comment Go to comments. Drop the offline disk from the disk group. It's just my curious with this forum on oracle. Configuring ASMLIB for Multipath Disks. Понадобилось посмотреть отображение дисков ASM на диски операционной системы. Review this information to administer the Oracle Automatic Storage Management library driver and disks. ORACLEASM_ENABLED=true # ORACLEASM_UID: Default user owning the /dev/oracleasm mount point. To create the disk device for use with the Oracle Automatic Storage Management library driver, we issue this command: usr/sbin/oracleasm createdisk Vol01 /dev/sdb1. I discovered that when this option is omitted, such as in the. 1 configuration Linux multipath installation oracle 11g rac, Programmer Sought, # /etc/init. d/oracleasm querydisk -d /dev/emcpowera1 Device "/dev/emcpowera1" is marked an ASM disk with the label "ARC1 "# /etc/init. d/oracleasm querydisk -d data1 and # /etc/init. this sample) from Oracle Linux server. Configuring Oracle ASMLIB for Multipath Disks. /Enterprise/RPMS/ rpm -Uvh oracle-support-1. oranode1:/home/oracle # /etc/init. What is means? It means ASMDISK01 is mapped to device [8,17]. 使用oracleasm querydisk可以查询到device的major和minor,从而对应. 1) Last updated on FEBRUARY 12, 2019. Now scan the problem device (remember at this stage, the ASM disk was created using createdisk command) /usr/sbin/oracleasm scandisks -v /dev/device-name. d/oracleasm listdisks Then on Node 2: $ sudo /etc/init. cat /proc/modules to verify that SDD sdd-mod driver is loaded. Configuring Disk Scan Ordering to Select Multipath Disks. For detailed multipathing commands, # /etc/init. Troubleshooting ASM disk related issues using kfed and kfod. 简介: 通过openfiler软件模拟共享存储,然后在本地安装Oracle12CRAC方便自己学习!真实还原在生产环境上安装的过程. I'll describe how to do it manually. ASMLib will then ignore them, only scanning the multipath disks. The article explains how to troubleshoot Oracle ASM disk creation. [email protected]:~> srvctl stop database -d orcl. d/oracleasm querydisk -d /dev/sdc1. Excluding devices and explicitly setting the scanorder can be useful for multipath devices. Oracle Apps DBA Support and troubleshooting. but, it points to the /dev/oracleasm/disks/* which contain files of BLOCK type. 6 64-bit x86_64)" channel on Red Hat Network (RHN). First make sure that ASM disk is no longer used by any disk. Remove this to enable multipathing # on the default devices. d/oracleasm scandisks $ /etc/init. ASMLib learns what disk are marked during a process called disk scanning. root# parted /dev/mapper/ mklabel msdos unit s mkpart primary "1 -1". Additional configuration is required to use the Oracle Automatic Storage Management library Driver (ASMLIB) with third party vendor multipath disks. 6 + they introduced UDEV and device-mapper multipath which includes raw disk support as well as multipath IO options for disks, with persistent device naming. Oracle Grid Infrastructure Installation Guide For Linux RAC 09 PDF 121 GRIDInstallation And Upgrade E48914 22. In asmlib two disks had been configured to point to the same disk multipath /dev/mapper/mpathc1 (DATA03) and /dev/mapper/mpathc (FRA), when creating FRA diskgroup the DATA03 was lost. d/oracleasm listdisks works on LVM dm-* devices until a reboot/restart. 4 Create one volume for the Redo Log files. from live node2 crsctl query css votedisk ocrcheck crsctl stat res -t. And list the disk to search for its block device: # ls -lha DISK01 brw-rw----. 3, ASM does not have multi-pathing (managing multiple paths to a physical disk) built into it. It should not ignore other SCSI disks. SETUP ASM&ASMLib on Multipath Disks. For Red Hat Enterprise Linux 6 (beginning with 6. Yes, asm is configured with asm libraries. Thus two concurrent operations cannot be made using a SCSI protocol. Author dbalifeeasy Posted on August 29, 2017 October 19, 2020 Categories ASM, Premium Content Tags /dev/oracleasm/disks/, blkid, lsblk, major and minor, Mapping of ASM Disks to Physical Disks, multipath -l|grep -i ocr_vote, oracleasm listdisks, oracleasm querydisk -p -d Leave a comment on How to Find Mappings Between ASM Disks and Physical Disks. > 新建的磁盘 multipath -ll 是能看到的,但是被rac使用的原来的磁盘看不到。 Maybe you should reboot it. Provide information as prompted for your system. First of all, we need to be sure, that asm library is taking correct partitions (bold ones): cat /proc/parttitions. When I attempt to create the ASM instance and create a disk group, the disks are not visible, I verified that the search path was /dev/oracleasm/disks/* Each of the disks are whole disk partitions (/dev/hdc1, /dev/sdb1, etc), yet. Start oracleasm: [ Do on all nodes ] # /etc/init. d/oracleasm querydisk -d DSKORA1 Disk "DSKORA1" is valid ASM disk on device [253, 6]. 为了查询,使用下面的oracleasm querydisk命令。 ipv6 339024 660 ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6 dm_round_robin 2531 34 dm_multipath 18562 18 dm_round_robin uinput 8917 0 sg 30968 0 serio_raw 5631 0 iTCO_wdt 6353 0 iTCO_vendor_support 3030 1 iTCO_wdt coretemp 6997 0 acpi_cpufreq 13345 0 freq_table 6987 2 cpufreq. Set up an YUM repository using the DVD image. Managing data under ASM disks and diskgroups is very important task for a DBA. ppt,讲座目标 只要坚持遵从一些最佳应用,在 Linux 上实施真正应用集群就应该会相对简单一些 演示基于 RAC Pack 客户对 9i 和 10g 体验的最重要的 RAC 最佳应用, 一般的和 Linux 特定的最佳应用 没有其他特定平台 重点讲述 10g 免责声明 议程 规划最佳应用 体系结构考虑事项. d/oracleasm listdisks DISK1 # /etc/init. rpm #this is not in the dvd, you have to download it rpm -Uvh oracleasmlib-l. Device Mapper Multipathing or DM-multipathing is a Linux read -r ASM_disk do major="$(/etc/init. For Multipath [[email protected] ~]# multipath -ll mpath1 dm-4 IBM DS size=10G features='0' hwhandler='0' wp=rw. This article presents the setup details for using either raw devices or ASMLib, as well as the procedures for converting between both methods. Edit t Below Parameters to below vaues in file: oracleasm querydisk -d DATA01 Disk "DATA01" is a. I didn't know that ASMLib treats ID LUN. 查询transport_set_violations视图,来查看是否有违反依赖的对象存在. oranode1:/home/oracle # multipath -ll. Just install it from the DVD with the command RPM or with the command YUM after the configuration of the repository. In order for multipath devices to be presented in asm when loading the OS, you need to check the following settings. Please correct me if I am wrong, or missing something. The following example shows creating an ASMLib device on a partition of a Linux Multipath device. 2 oder höher nicht freigegeben ist. actual ASM library, and the oracleasm support package, which provides the utilities to configure and enable the ASM driver. This is caused by a (default) option called "1 queue_if_no_path". Configure ASMLIB to use multipath (from each node on RAC environments): By any path the ASMLIB can found the disks, but, the best path is using the multipath : Modify in /etc/sysconfig/oracleasm : ORACLEASM_SCANORDER=”dm” ORACLEASM_SCANEXCLUDE=”sd”. Create Directory Under ASM Diskgroup Find ASM physical disk mapping Create Diskgroup ASM Create Tablespace in Oracle ASM Create Directory Under ASM Diskgroup In this activity, you will understand how to create directories inside. Subscribe to: Posts (Atom) Oracle DBA. d/oracleasm createdisk and verified with listdisks and querydisk. Oracle Grid Infrastructureインストレーション・ガイド, 11gリリース. d/oracleasm querydisk /dev/sdh Checking if device “/dev/sdh” is an Oracle ASM disk [FAILED] Existing disks can be listed and queried:. Multipathing, RAC et ASM [[email protected] ~]# oracleasm querydisk -d ASM_ARCH_01 Disk "ASM_ARCH_01" is a valid ASM disk on device [8, . Checking if /dev/oracleasm is mounted: yes. Oracle strongly prefers that DB-related files are stored directly in ASM, not on an ACFS filesystem. Let's see some background information of ASMLib. Computers & electronics; Software; User manual. Disk "VOL1" is a valid ASM disk on device [8, 97]. d/oracleasm scandisks Scanning system for ASM disks: [ OK ] # The stamped disks are listed as follows. You can however force to re-use the disk by: Drop the offline disk from the disk group. Let Linux manage your multipathing to your disks. We could list ASM Diskgroups by, *#oracleasm listdisks* but this command doesn't show the disks assigned to ASM DiskGroup. /dev/oracleasm/disks/ – Make DBA Life Easy. 表示Oracle不帮你管理镜像,功能由外部存储系统实现,比如通过RAID技术;有效磁盘空间是所有磁盘设备空间的大小之和。. If it is successfully loaded, output similar # /etc/init. ===== identify the actual disk location/ disk name / disk type ===== /etc/init. Expanding the lun on the storage was fairly straightforward on the EMC Clariion on which the data was residing. 2)#oracelasm querydisk -p ASMDISK01. 3)If you are using ASMLib for configure ASM Disks, then you can use following steps for define which device mapped which ASM Disk-As you know, oracleasm listdisks is return only ASM disk names [[email protected] ~]$ oracleasm listdisks ASMDISK01 ASMDISK02. 如果他发现有足够的PST,那么会mount diskgroup. d/oracleasm createdisk DISK_NAME PARTITION_NAME #/etc/init. This will configure the on-boot properties of the Oracle ASM library [[email protected] ~]# oracleasm listdisks | xargs oracleasm querydisk -p. Oracle速 Database Installation Guide 11g Release 2 (11. After rebooting, an oracleasm querydisk of that disk shows it using the major/minor #'s for the vpath instead of the sd. [email protected]:~> srvctl stop listener. To load the Oracle Automatic Storage Management library driver without restarting the system, we issue this command: /usr/sbin/oracleasm init. # /usr/sbin/oracleasm configure -I. 注意区别(ASM磁盘与LUN映射出来的multipath路径盘)授予权限区别:下面是创建成功的权限分配情况 Usage: oracleasm [--exec-path=] [ ] oracleasm --exec-path querydisk Determine if a disk belongs to Oracle ASMlib createdisk Allocate a device for Oracle ASMLib use. As a first debug step read the ASM disk header block and verify the ASM disk header status Gather info for available ASM Disks Note ASM disks … Continue reading Troubleshooting ASM disk related issues using kfed and kfod. I want to know the the missing DISK info according to the multipath -l command. Step 1: To list ASM disks: $ /etc/init. 在上一篇文章 Oracle 10g RAC 配置物理dataguard系列1:RAC主库信息概览、备库准备工作 中,我们了解了双节点RAC主库的基本信息,并且成功创建了一台将来用作物理备库的机器。 在本篇中,我们将完成以下任务: 在物理备库机器上安装oracle 10g 数据库软件; 在物理备库机器上升级oracle 10g 软件到10. 次のように querydisk オプションを使用して、ディスク・デバイスまたは . However, I fail to find an oracleasm binary that could “format” the disks. Configure ASMLIB to use multipath (from each node on RAC environments): By any path the ASMLIB can found the disks, but, the best path is using the multipath : # /etc/init. Remove ASM disk on multipath device (Labeled as ASMDISK01 in. The remaining package provides the kernel driver for the ASMLib (loaded into the OS kernel at system boot). [[email protected] ~]# oracleasm querydisk -d DATA2 Disk "DATA2" is a valid ASM disk on device [ 8,177 ] Ótimo, agora basta verificar no /dev fazendo um grep buscando o device 8, 177:. #/usr/sbin/oracleasm querydisk /dev/sdk1 Device "/dev/sdk1" is marked an ASM disk with the label "DISK01" Also,we can check with listdisks # /usr/sbin/oracleasm listdisks DISK01. It will ask for the user and group that default to owning the ASM driver access point. Substitute for the mpath device name/number (e. Configuring Oracle ASMLIB for Multipath Disks. d/oracleasm querydisk -d VOL4 Disk "VOL4" is a valid ASM disk on device [251, 97]. HPE 3PAR Peer Motion and HPE 3PAR Online Import User Guide. ASM disks using SAN Disks through multipath for Oracle Database. [[email protected] mapper]# multipath -ll mpathe [[email protected] mapper]# oracleasm querydisk -d FLASH01. cat /etc/multipath_binding (It will return to you all the disks in mapped in multipath)-----[[email protected] ~]# cat /etc/multipath_binding # Multipath bindings, Version : 1. BOOT the server Now other major and minor numbers are used:. querydisk Determine if a disk belongs to Oracle ASMlib. d/oracleasm querydisk land4 Disk "LAND4" is a valid ASM disk on . Use the querydisk option to determine if a disk device or disk name is being used by . harry potter: hogwarts mystery stuck on loading screen. Verify Multipath Devices: Once multipathing has been configured and the multipathd service started, the multipathed devices should now be available. Confirmed using the oracleasm querydisk Pei/dev/emcpower < x >. d/oracleasm querydisk DATA1 Disk "DATA1″ is a valid ASM disk on device [120, 6] Certain detection systems actually fail to auto-detect cases of stale filesystems when using dm-multipath. d/oracleasm querydisk -d DSKORA1 Disk "DSKORA1" is valid ASM disk on device [253, 6] Good Luck ! Leave a comment. /usr/sbin/oracleasm deletedisk DISK01 2. We must be careful while downloading correct rpms. 3 Create one or more volumes for database Data and Temp files. 單個磁盤的大小不要大於2T,因爲超過2T的磁盤無法創建磁盤組。 2. 儘量使用多塊大小相同的磁盤創建同一磁盤組,這樣做的好處有兩點: a. For us SA's however it's a mixed bag of good and not-so-good. Check which asm disk maps to which mpath devices partitions. How do I itenfify the underlying RAW file system. 9-5 kernel for an SMP (multiprocessor) server using Intel i686 CPUs. service oracleasm querydisk ORACLE_ASM_D1 Disk "ORACLE_ASM_D1" is a multipath { wwid 360a98000486e616e504a512345678908 alias mpatha } . The -d option will display the device number of the queried disk. This is due to the driver package is now embedded in the UEK kernel :. Using this you can identify which device as marked for asm or not. About Using Oracle ASM with Multipath Disks Oracle ASM requires that each disk is uniquely identified. The basic oracleasm commands are: configure Configure the Oracle Linux ASMLib driver. First find the major,minor numbers for the device ASMlib is using. Augmenter le délai heartbeep pendent lequel un disque n’est pas considéré comme offline lors d’une bascule multipath pas assez rapide. DATA17 / dev/emcpowerw / dev/emcpoweru. # oracleasm querydisk DISK01 Disk "DISK01" is a valid ASM disk. Tried to create disk using # oracleasm createdisk DATA1 /dev/xvdc11 oracleasm module not loaded or /dev/oracleasm not mounted. BOOT the server Now other major and minor numbers are used: # multipath -l 1HITACHI_D60H02610121 [size=1 GB][features="0"][hwhandler="0"] \_ round-robin 0 [active] \_ 1:0:1:0 sdi 8:128 [active][ready] \_ round-robin 0 [enabled] \_ 2:0:1:0 sdam 66:96 [active][ready] # /etc/init. /proc/partitions echo "-> ASMLIB disks discover" /etc/init. d/oracleasm createdisk VOL3 /dev/sdd1 #/etc/init. d/oracleasm configure #/etc/init. Network Idle Timeout: The time in milliseconds before a network connection is considered dead. To get a solution and see the information that we’re looking for, you must go to the /dev/oracleasm/disks directory: # cd /dev/oracleasm/disks # pwd /dev/oracleasm/disks. If you are a member of the Unbreakable Linux Network, then you can install the ASMLIB rpms by subscribing to the Oracle Software for Enterprise Linux channel, and using up2date to retrieve the most current package for your system. d/oracleasm querydisk VOL1 Disk “VOL1” is a valid ASM disk on device [8, 17]. To get the absolute device path for the disks used while creating an ASM disk, we can use the below command: # oracleasm querydisk -p VOTEDISK1 Disk “VOTEDISK1″ is a valid ASM disk /dev/sdc1: LABEL=”VOTEDISK1″ TYPE=”oracleasm”. Next step is to clean up the device multipath or local for the deleted disk. emcpower) /dev/rd/cxdypz /dev/ida /c0d1 /dev/ida/cxdypz RAID disk Use the oracleasm script with the configure option querydisk: Use this option to determinate whether a disk device or disk name is being used by the ASM library driver. Reload the multipath daemon # service multiapthd reload. status Display the status of the Oracle ASMLib driver. Here is an example: With old oracleasm-support 2. # oracleasm listdisks | xargs oracleasm querydisk -p | grep mpath /dev/mapper/mpathe1 . You then run the oracleasm tool to configure, initialize the service. ASM on Solaris and ASMLib on Linux. STEP 1) CHECK CURRENT DISKS STEP 2) CHECK ASM TO PHYSICAL DISK MAPPING. The machine has two connections, or paths, to that external storage. querydisk Determine if a disk belongs to Oracle ASMlib -p nos permite obtener sobre que alias de multipath se ha creado el disco ASM:. Label of the ASM / dev/emcpowerv / dev/emcpowert. So, you now know that DATA0 is stored on /dev/sdd1, the first partition of /dev/sdd. ㅁ [racdb1 RHEL] 신규 볼륨 파티셔닝(하나의 서버에서만 진행하면됨. If the database was running as the 'oracle' user and the 'dba' group, the output would look like this: [[email protected] /]# /etc/init. So, I had to map a couple ASM disks to physical devices. The system administrator configures ASMLib to scan the multipath disks first. ASMLib will see them first, and prefer them over the single paths. To add an index to an existing attribute: Invoke Oracle Directory Services Manager and connect to the Oracle Internet Directory server as described in "Invoking Oracle Directory Services Manager". 3: Querying Disks with Oracleasm. /*** StyleSheet for use when a translation requires any css style changes. My asm commands, querydisk, listdisk, scandisk were working fine. I *did* install kmod-oracleasm and oracleasm-support, but the oracleasm binary itself is missing. The ORACLEASM_SCANORDER variable specifies disks to be scanned first. defaults { user_friendly_names yes } ## By default, devices with vendor = "IBM" and product = "S/390. Determine if a disk belongs to Oracle ASMlib. SQL> alter diskgroup data2 drop disk DISK003A force; Diskgroup altered. Configuring Oracle Cluster Synchronization Services (CSS). [[email protected] ~]$ oracleasm listdisks. Installing with OracleASM packages and dependencies. Step 2: Running 'kfed' Oracle utility. d/oracleasm querydisk /dev/sdb2 Device "/dev/sdb2" is marked an ASM disk with the label "VOL1" The O/P is same for sdb3 and sdb4 (both multipath & single path devices). d/oracleasm querydisk DATA1 Disk “DATA1″ is a valid ASM disk on device [120, 6] Hot resize Multipath Disk – Linux ;. #devnode_blacklist { # devnode "*" #} ## Use user friendly names, instead of using WWIDs as names. 1 Problem: While installing the ASM Instance with Oracle Universal Installer the ASM Disk, created with oracleasm createdisk, is not shown. Nothing was found there when we tried to list registered disks. parameters show parameters asm 3. Anuj Singh Essex, United Kingdom. To create the disk device for use with the Oracle Automatic Storage Management library driver, we issue this command: usr/sbin/oracleasm createdisk Vol01 /dev/sdb1 usr/sbin/oracleasm createdisk Vol02 /dev/sdc1. Configure ASMLib for multipath (do the following operations for every node) [[email protected] ~]# /etc/init. on other RAC nodes: oracleasm listdisks (to verify they have been deleted too) e. conf文件,配置新加磁盘的alias 的wwid (两节点都做) 第二步:停库 (最好停库,有时候start_udev容易发生磁盘错误) (两节点. Further investigation revealed that on node2 where the root. ORACLEASM_UID=grid # ORACLEASM_GID: Default group owning the /dev/oracleasm mount point. Example: [[email protected] asm_tar]# /etc/init. The querydisk option will list the major and minor numbers that can be used to match the physical device. ORA-15063 as "oracleasm querydisk" fails: Disk "ASMDATA01" defines an unmarked device (Doc ID 2153949. Running Systems » 2008 » May. This solution answers my question of “How do I know what device ASMlib has actually found and that it is using the multipath device?”. The DBA can check this by using asmcmd or by logging into the ASM database. Configure ASM library to use multipath propagation of disks on Linux operating system, but more importantly, how to preserve online/running ASM instance, during loss one of the paths to disks, is shortly described below. The system administrator could choose to exclude all the single path disks. How to Delete ASM Disk on Multipath Device. How to Configure LUNs for ASM Disks using WWID, DM-Multipathing, and ASMLIB on RHEL 5/OEL 5 [ID 1365511. 1 Installing and Configuring the Oracle ASM Library Driver Software. If you have done multipath configuation, please issue below command: # /etc/init. [[email protected] ~]# oracleasm deletedisk DISK00 Removing ASM disk "DISK00": [ OK ] 5. The querydisk argument can be used for this purpose: /etc/init. This will instantiate the disk. Contribute to szaydel/Rigel-Major development by creating an account on GitHub. Disk "FLASH01" is a valid ASM . multipath -ll |grep 240d8557523e8fbc44f0cd000 ls –la /dev/mapper/ find new device using log time oracleasm querydisk /dev/mapper/mpathu. The Linux SCSI driver will see both paths. 首先要配置 iscsi 存储,再其次一下操作,我这里配置了两个 ISCIS 存储. 小麦苗db宝,实用经典,简单易懂,接地气!技术应用型博客,主打实用性,多做实验,多思考! 道阻且长,行则将至,行而. oracleasm deletedisks (do this for every disk listed above) c. You can now update the /etc/sysconfig/oracleasm file to restrict ASM from looking at plain SCSI disks and force it to scan only multipath devices when it starts. Oracle ASM requires that each disk is uniquely identified. Once again, Oracle will use the multipath disk. d/oracleasm querydisk where NAME is any name under /dev/oracleasm/disks. Method 2: We need to find DATA01 is assigned to which partition on linux. Multipath LVM I/O scheduler VFS Application program Page cache chpid 5 SCSI driver zFCP driver qdio driver Server 0 Server 1 ranks 8 6 4 2 DA. 5 •Explore basic concepts and tools. When you have create new asmdisk on one of cluster node, you need to scan disks on other nodes. 5 über 2 Rechenzentren November 2018 Aufgabe: Installation einer Oracle 18c Real Application Cluster Umgebung über zwei Brandabschnitte unter Oracle Linux 7, als Datenbank muss aber immer noch Oracle 11g R2 11. It checks if the disk has been marked for ASMLib. To identify the underlying physical device that the ASM disk point to, you can use the oracleasm querydisk command. Overview KFOD is a utility to verify disks before installing Grid Infrastructure KFED is a utility that can be used to read and modify ASM metadata blocks. Best practices for ASM on Linux : 1. 1 配置Linux multipath安裝oracle 11g rac. 加入6块硬盘,每块100g。不管是热加还是冷加。不管是加硬盘,用san存储划lun,或者再加上多路径,都是能够这么做的。. Step 2: To check the major and minor value of a given ASM disk: $ oracleasm querydisk -d ASM1 Disk "ASM1" is a valid ASM disk on device [ 252, 2 ] $ oracleasm. Solution: Define the Scanorder in /etc/sysconfig/oracleasm config file. Checking mpath info of a ASM disk in 11g & adding new asm disks using oracleasm ===== oracleasm listdisks. The Fast Recovery Area is a unified storage location for all Oracle Database files related to recovery. Alternately, you can set the user_friendly_names option in the multipath configuration file, and Device Mapper Multipathing, as a Linux native multpath tool, creates a block device under /dev/mapper for each LUN attached to the system with a node-unique name of the form mpathN. 0 # NOTE: this file is automatically maintained by the multipath program. So I did some small changes to adapt it. Then oracleasm createdisk for each LUN mapped by infinihost. The oracleasm querydisk command allows you to view the physical nature of the device label, in this case ORA11DATA006. 数据库,简单来说是本身可视为电子化的文件柜——存储电子文件的处所,用户可以对文件中的数据进行新增、截取、更新、删除等操作。指的是以一定方式储存在一起、能为多个用户共享、具有尽可能小的冗余度的特点、是与应用程序彼此独立的数据集合。. Also verify that the ASM disk labels are now using the appropriate Linux native device-mapper multipath-generated names by issuing the following command: # oracleasm querydisk -p The output should be similar to the following example for all configured ASM disks: Device is marked as an ASM disk with the label "ASM_DISK. OCR_VD_NEW_3 [[email protected] ~]$ oracleasm querydisk OCR_VD_NEW_1. SOLUTION: # oracleasm status Checking if ASM is loaded: no Checking if /dev/oracleasm is mounted: no Load the oracleasm module # oracleasm init Creating /dev/oracleasm mount point: /dev/oracleasm Loading module “oracleasm”: oracleasm Configuring “oracleasm” to. 1] Because a single disk can appear multiple times in a multipath configuration, you must configure ASM to discover only the multipath disk, by setting ASM_DISKSTRING equal to the name of the pseudo device that represents the multipath disk. udev and multipath setup for Oracle ASM 11. ASMLib allows two modifications to the disk scan order. EXTRACT groups on RAC systems should be created. Creating an ASM instance----- It can be performed using dbca or manually. Check the properties of the ASM disk group. Ensure that the allocated devices can be seen in /dev/mpath: 8. Perform these steps for each disk to be configured for ASM. このウェブサイトは、あなたが我々のウェブサイトで最高の経験を得ることを確実とするために、クッキーを使います。. for i in `oracleasm listdisks` do oracleasm query 随机推荐 IT公司100题-35- 求一个矩阵中最大的二维矩阵(元素和最大). $ ls -la /etc/sysconfig/oracleasm lrwxrwxrwx. asmcmd lsdsk -p asmcmd lsdsk --candidate -p -- if you use ASMLib /usr/sbin/oracleasm listdisks /usr/sbin/oracleasm querydisk {DISKNAME . entre servidor e a controladora , utilizando o multipath teríamos uma redundância de canal [[email protected] ~]# oracleasm querydisk -p DATA2. d/oracleasm querydisk /dev/path /dev/path - A block device to query for the presence of an ASM label. [[email protected] ~]$ oracleasm querydisk -d ASMDISK01 Disk "ASMDISK01" Is a valid ASM disk On device[8,17] As see you, ASMDISK01 is valid ASM disk on device [8,17]. To verify the disk created, we issue this command: usr/sbin/oracleasm querydisk /dev/sdb1. permission of asmdisk --from all nodes ll 4. 1 About Using Oracle ASM with Multipath Disks. 2 Create a volume for the Oracle Home. 7 MB/s [[email protected] dev]# oracleasm querydisk /dev/xvdj1 Device "/dev/xvdj1" is marked an ASM disk with the label "OCRVOTING_AA02" [[email protected] dev]# dd if=/dev. oracleasm querydisk 次のように querydisk オプションを使用して、ディスク・デバイスまたはディスク名がOracle Automatic Storage Managementライブラリ・ドライバで使用されているかどうかを確認します(diskname_devicenameは、問い合せるディスクまたはデバイスの名前です。. Note: this article is only applicable when using ASMLib on LVM-managed devices. devices so ASMLIB will use powerpath or multipath device instead. d/oracleasm querydisk /dev/multipath/sdb2 srvctl status asm -n linux1 [email protected] ~# srvctl status asm -a Posted by Anuj Singh at Thursday, October 28, 2010 No comments: Newer Posts Older Posts Home. Instead of relying on the default, you should configure Oracle ASM to recognize the multipath disk. There could be some product applications relying on the device number output. connection for reset passwd of boks A164396 - SHAI734# ESMA - [email protected] the situation from the ASM perspective using oracleasm querydisk , I saw that, . For RHEL5, it is recommended to use ASM with partitioned block devices. As suggested by Linux "man multipath", I've made the mpath]# /etc/init. Oracle EBS Cloning, Oracle EBS Patching, Oracle Data Guard, Oracle RAC, SSL/TLS, Oracle RMAN. ASM remembers former disks and prevent disks to be re-used with the same name. In a multipath disk configuration, the same disk can appear three times: the initial path to the disk, the second path to the disk, and the multipath disk access point. In this article, we will be looking at general ASM administration tasks you must know. •11g R2 Oracle database / Grid Infrastructure cluster. Contexte : Disque de baie de 200Go, mirroring matériel, deux serveurs Linux Red Hat 5. Scanning system for ASM disks…. Step 8: need to add newly created partion over oracle asm. Before download the rpms, check your kernel version and processor (32 bit or 64 bit): oracleasm- (kernel) --- must be same version with the kernel. Configurar “oracleasm” no Linux para usuário “oracle” e grupo “oinstall”:. d/oracleasm querydisk -d /dev/emcpowera1 Device “/dev/emcpowera1” is marked an ASM disk with the label “ARC1”. Execute below commands on all nodes. A multipath configuration can use either facility. Below steps can be followed to add a new disk to ASM Disk Group. In other words, ASMLib will ignore those disks completely. Step 7: #check which oracleasm /#/etc/init. In each case, I created ASM disks using /etc/init. 1 grid oinstall 8, 17 Mar 2 08. I was working in an Upgrade project where some DB's the downtime must be reduced. d/oracleasm querydisk DAT Disk "DAT" does not exist or is not instantiated. Please use that method # to modify this file # # ORACLEASM_ENABELED: 'true' means to load the driver on boot. d/oracleasm querydisk VOL1 Disk "VOL1" is a valid ASM disk on device [8, 97]. Answer: The oracleasm command utility is part of the Oracle ASMLib, and you only use oracleasm commands when you want Oracle ASMLib to be able to access your ASM disks. As you can see /dev/sdc1 is the absolute device path for. Installation einer Oracle Real Application Cluster 18c Umgebung auf Oracle Linux x64 7. ㅁ [racdb1, racdb2 RHEL] Multipath Reload # service multipathdreload. About Disk Scan Ordering The ORACLEASM_SCANORDER variable specifies disks to be scanned first. ctrlm ~ ctrlb ==> break sequence for Sun Fire 280R 866-784-4772 3 2 ----->Tech. In the ASMLib configuration file she edits the ORACLEASM_SCANORDER variable to look like so: ORACLEASM_SCANORDER="multipath sd" During a scan, ASMLib first tries all disks that start with "multipath". ASMLIBLinux OS Service 'oracleasm'Service NameoracleasmDescriptionThe oracleasm service is used to provision, configure and manage Oracle Automatic Storage Management (ASM) disks via the Oracle Automatic Storage Management library driver (ASMLib). ASM Concepts ASM manages only database files OMF including datafiles, tempfiles, control files, online redo logs, archive logs, RMAN backup sets, server parameter files, change tracking files, and flashback logs An ASM instance is required on each node Does not have datafiles, controlfile, redologs and dictionary Processes dedicated for ASM are RBAL and ARBn Stripe…. The first call was to stop asmlib, disable asmlib, enable asmlib, start asmlib and perform a scandisk. Log in as root and install the Oracle ASM packages. Oracle Grid Infrastructure Postinstallation Procedures. You can change the name of the device that will be displayed in the list in the sidebar. d/oracleasm querydisk /dev/sdg Excluding devices and explicitly setting the scanorder can be useful for multipath devices. oracleasmlib --- can be the latest version of correct 32 or 64 bit version. d/oracleasm querydisk -d `/etc/init. SDD (Subsystem Device Driver) is the pseudo device driver designed to support the multipath configuration environment in IBM products. But if dm-multipath is involved, then RHEL 5. NOTE – > IF oracleasm start command is not working, then use oracleasm. Checking if ASM is loaded: yes. RHEL/OL5 oracleasm listdisks fails not list LVM. d/oracleasm querydisk -d DB_DATA01. Hi Guys, In 11gR2 RAC, How to identify which ASM Diskgroup is attached to which Disks( OS is RHEL 5. 8+Oracle12CR2+ASM 除了最后的验证只需要在1台服务器上执行,其他的操作都需要在2台服务器上执行一遍!. Here are the simple steps for mapping between ASM disks and physical disks in Linux. Such kind of disk header corruption/missing issues can be taken care by running kfed with 'repair' command. The architecture illustrated in Figure 1-17 raises another issue. 0:public --> ethernet device name/new ip:public. The system administrator wants ASMLib to see multipath disks before it sees single path disks. Recently I was tasked to install Oracle RAC 11. [[email protected] ~]# oracleasm createdisk DISK003A /dev/sdg1 Writing disk header: done Instantiating disk: done [[email protected] ~]# oracleasm scandisks Reloading disk partitions: done Cleaning any stale ASM disks Scanning system for ASM disks [[email protected] ~]# oracleasm listdisks DISK001A DISK001B DISK002A DISK002B DISK003A DISK003B. [[email protected] asm_tar]# /etc/init. d/oracleasm listdisks or col NAME format a10. [[email protected] ~]# /etc/init. SOLUTION Modify parameter ORACLEASM. 3 and above, only the QLogic and multipath inbox drivers are . 为了查询,使用下面的oracleasm querydisk命令。querydisk命令可以应用于裸设备和ASMLIB 3. I'm not really sure if this is the best way of mapping OS device -> ASM disk: [[email protected] ~]$ sudo /etc/init. @James Labocki:Configuring Oracle ASMLib on Multipath. > oracleasm querydisk -d VOL1 Disk "VOL1" is a valid ASM disk on device [8,17] > cd /dev/oracleasm/disks/ > ls -al total 0 Configuration Multipath pour oracleasm. ls -lrt asm001p1 you can see the partition here. In order to solve this problem, ensure that the device names of each node are consistent, there are two ways: << 1 >> Creating an ASM disk using ASMLIB will do ASM disk identity on each partition to ensure uniqueness of device names First install the ASM kernel package. d/oracleasm listdisks But listdisks lists the disks according to the NAME given in ASM. The post outlines steps to remove ASM disk on multipath device (Labeled as ASMDISK01 as an example in this post) from CentOS/RHEL server. In this post I'll try to provide a brief summary for a huge topic like Automatic Storage Management (ASM), hopefully the reader find it useful in understanding ASM. Below is the sequence of actions to reproduce the issue. It’s just my curious with this forum on oracle. d/oracleasm querydisk -p If you are using multipath devices (mapper devices or emcpower) then show me the output of: oracleasm-support-2. d/oracleasm querydisk DISK1 Disk "DISK1" is a valid ASM disk on device [253, 6] SHUTDOWN the server Exchange the LUN number with another LUN for an different scanning sequence. Configure ASMLIB Log in as root, and enter the following command: 1. oracleasm listdisks (to verify they have been deleted) d. shell> oracleasm querydisk -d ASM2 Disk . Surachart Opun's Blog: Check the device ASMLib on multi. This will directly give the linux partition. 0 - 64bit production with the partitioning, olap, data mining and real application testing options sql> select path from v$asm_disk; path -------------------------------------------------------------------------------- /dev/oracleasm/disks/vol2 /dev/oracleasm/disks/vol1 sql> …. oracle配置文件在哪(oracle安装步骤详细). As the ASM disks were not showing up under the ASM directory ‘/dev/oracleasm/disks’, we were not able to run the ‘kfed. Première étape : Installation du package oracleasm-support , kmod-oracleasm: Updating certificate-based repositories. To save me from this, I found this great post by Alejandro Vargas, with a very nice script to make this mapping easier. createdisk Allocate a device for /etc/init. alter session set CURRENT_SCHEMA=SYSMAN; For Oracle Databases. d/oracleasm querydisk -d VOL1 Disk "VOL1" is a valid ASM disk on device [8, 33] The command reports the device identified with major,minor numbers which are unique numbers associated to each disk. Le multipath est configuré avec le driver multipath propriétaire de DELL puisque les bascules en driver linux natifs sont extrêmement lentes. If using RAC, no need to create partition & stamp with oracleasm on another nodes. 1 - oracleasm_scanorder, which tells ASMLIB the order to scan the devices, using the generic prefix, 2 - oracleasm_scanexclude, which tells ASMLIB which devices should not be discovered. First make sure that ASM disk is no longer used by any disk group, otherwise, you might risk data integrity. Oracle notes that the ASMLib is an optional support library for the Automatic Storage Management feature of ASM. Disk “OCR_VD_NEW_2” is a valid ASM disk [[email protected] ~]$ oracleasm querydisk. ASMLib runs this scan every time it starts up. d/oracleasm script with the 'configure' option. 3 and later Information in this document applies to any platform. ASMLIB is already included with Unbreakable Enterprise Kernel packages, and with SUSE 11. No part of this work may be reproduced, stored in a retrieval system, adopted or transmitted in any form or by any means, electronic, mechanical, photographic, graphic, optic recording or otherwise, translated in any language or computer language, without the prior written permission The following is intended to outline our general product direction. We check the new ip configuration on rac to see that the public ip is actually changed. 首先来了解下PST quorum 是什么意思: Partner and Status Table 一般来说aun=1 是保留给Partner and Status Table(PST)的拷贝使用的。 一般5个ASM DISK将包含一份PST拷贝。多数的PST内容必须相同且验证有效。否则无法判断哪些ASM DISK实际拥有相关数据。 在 PST中每一条记录对应Diskgroup中的一个ASM DISK。. listdisks List known Oracle ASMLib disks. The following example was run on a virtual server hosting ASM and an Oracle database. oracleasm querydisk -p CAT04 Disk "CAT04" is a valid ASM disk que quan tiràvem un multipath -ll ens retornava aquest error. d/oracleasm scandisks /etc/init. [[email protected] asmserver101/] # / usr / sbin / oracleasm querydisk . rank 3 rank 2 Disk drives 6 5 3 2 8 DS8000 storage pool striped volume (1) A storage pool striped volume (rotate extents) is defined on a extent pool consisting of. [[email protected] ~]# oracleasm status. 1 root root 24 Mar 9 16:01 /etc/sysconfig/oracleasm -> oracleasm-_dev_oracleasm $ cat /etc. sh was failing with the above errors, the /usr/sbin/oracleasm querydisk -d disk_name shows the device as '/dev/sdc1' whereas all other nodes were showing the correct multipath device names starting with dm-xx. As RDBMS and GI/ASM user: 1) Shutdown all Databases (as RDBMS user) utilizing the ASM instance(s) Identify the database need to be shutdown that is clients of ASM instance. oracleasm createdisk FRA02 /dev/mapper/mpath2 more /etc/sysconfig/oracleasm ===== Plan to add new disk for correcting imblanced disks. d/oracleasm configure Configuring the Oracle ASM library driver. oracleasm utility Oracle ASM library (ASMLib) driver #/etc/init. Dealing with ASM disks, Major and Minor number: Creation of ASM disks on Oracle Linux using ASMLib. connected to: oracle database 10g enterprise edition release 10. Here, the system administrator has been more specific. If I understand correctly then all you need to do is connect the device to your computer and open iTunes. Also, on both nodes, the command "/etc/init. # yum install device-mapper-multipath # chkconfig --list # chkconfig multipathd on # chkconfig iscsi on # chkconfig iscsid on. oracleasm createdisk FRA02 /dev/mapper/mpath2 more /etc/sysconfig/oracleasm # multipath -l. /oracleasm querydisk ORAVOL1 ORAVOL2 ORAVOL3 ORAVOL4 ORAVOL5 ORAVOL6 ORAVOL7 ORAVOL8 ORAVOL9 ORAVOL10 ORAVOL11 ORAVOL12 ORAVOL13 ORAVOL14 ORAVOL15 ORAVOL16 Disk "ORAVOL1" is a valid ASM disk on device [253, 4] Disk "ORAVOL2" is a valid ASM disk on device [253, 2]. x throws a curveball by using the keyword OPTIONS. The presence of the "oracleasm querydisk" command indicates you have ASMLib, and the command tells you the standard device name of each ASM disk device it sees. However emcli can run script files with multiple commands and a SQL can be used to generate the commands. d/oracleasm querydisk does not show disk number on a valid ASM disk as before. SQL> conn / as sysdba Connected. On all nodes of the cluster stop crs service, then scan asm disks and finally start crs again with the following three commands (you also have to add the iscsi lookup and the multipath config on each node):. The -p option will attempt to locate matching device paths if the blkid(8) tool is installed. for example you can see this below example. Conversely, the administrator could specify that the multipath disks are scanned first. Scanning for LUN's in Oracle Linux servers. Note: Multipathing can change the location of character devices depending upon the system used. I did all that, have the udev rules in place that properly populate my /dev/oracleasm/ directory with the symlinks, set the owner and the group. 规划说明: 本次实验使用VM+Openfiler+Oraclelinux6. ASMLib should ignore exactly the disks /dev/sdb and /dev/sdc. While scanning, ASMLib will ignore those paths, only seeing the /dev/multipath disk. Disk "DATA" is a valid ASM disk /dev/sdb1: LABEL="DATA" TYPE="oracleasm" Disk "FRA" is a valid ASM disk /dev/sdc1: LABEL="FRA" TYPE="oracleasm" 2. A backup copy of ASM disk header is always saved inside the disk. add extract testext, tranlog, threads 2, begin now. In this Document Goal Solution 1. scandisks Scan the system for Oracle ASMLib disks. Matching patterns to order multipath disk scan ORACLEASM_SCANORDER="mpath . Configuring Disk Devices Manually for Oracle ASM. 【ASM】ASMLIB 系列说明:RHEL6、RHEL7、CentOS6、CentOS7 都可以使用asmlib,只不过需要安装kmod-oracleasm包。RHEL5不需要安装kmod-oracleasm包。下载地址可直接在官网搜索:-----oracleasm常用命令asmliboracleasm日志: tail-f/var/log. /usr/sbin/oracleasm configure -i. By default, the name of a multipath device is set to its WWID. In a multipath configuration, please use the multipath name [ [email protected]:/home: ]$ oracleasm listdisks | xargs oracleasm querydisk -p. asmcmd lsdsk -p asmcmd lsdsk --candidate -p -- if you use ASMLib /usr/sbin/oracleasm listdisks /usr/sbin/oracleasm querydisk {DISKNAME | devicename} --check all disk 2. 5 Create one or more volumes for the Flash Recovery Area. PDF Tips Learned Implementing Oracle Solutions With Linux on. •A 2-Node cluster with a RAC One-Node database. Download the oracleasm package corresponding to your kernel version. Then we attempt to generate the disk again, and we do it without difficulties:. After these steps were done, the label matched with the Disk. Step 2: Running ‘kfed’ Oracle utility. 1 About the Fast Recovery Area and the Fast Recovery Area Disk Group. Configuring multi-path entries and reloading . transport_set_check ('test',true); PL/SQL procedure successfully completed. 如果创建错误,可以用deletedisk参数,如:oracleasm deletedisk DATA [[email protected] mnt]# oracleasm querydisk DATA Disk \到此,ASM的安装配置结束。 三,安装集群软件部分 3. oracleasm querydisk -d REDOA1 Disk "REDOA1" is a valid ASM disk on device [253, 10] Et là on peut avancer, car ces 2 chiffres entre crochets, sont les valeurs majeures et mineures du disque, ici en multipath et l'on peut trouver la correspondance avec le disque à 2 endroits: /dev:. d/oracleasm configure you should see a new device: # df -ha |grep asm # /etc/init. 61 is recommended for multipath users, for my setup I'll. d/oracleasm echo “ASM Disk Mappings” echo “———————————————…. d/oracleasm start Initializing the Oracle ASMLib driver: [ OK ] Scanning the system for Oracle ASMLib disks: [ OK ] Now as we have configured and started the oracleasm, we can proceed with making the disks as ASM disk. d/oracleasm listdisks | xargs /etc/init. You can use script in Example 2 to see the mapping with size. the oracleasm command by default is in the path /usr/sbin. This will instruct ASMLib to discover multipath disks: ORACLEASM_SCANORDER = "mpath dm" ORACLEASM_SCANEXCLUDE = "sd" Then to create ASM disks you may get lost, which one to use ? /dev/dm-n, /dev/mpath/ or /dev/mapper/ ? Fortunately on MOS the answer is clear and /dev/mapper must be used. [[email protected] mnt]# oracleasm listdisks cRS DATA FRA. 我们知道,在同一台服务器上可以创建同一版本的多个Oracle数据库,如,假设当前服务器上只安装了一套10. d/oracleasm querydisk -d VOL1 Disk "VOL1" is a valid ASM disk on device [8, 33] Although some multipath vendors will trap the IO even if the individual path is referenced, it is prefered to bind the ASMLIB disks with the pseudo device created by the multipath layer. 4 创建磁盘组 ASM 创建磁盘组,是在ASM 实例里操作,以记录磁盘组使用的磁盘和容量等元数据 信息。可以通过SQLPLUS 或ASMCMD,以及ASMCA 工具配置。. The oracleasm command writes the ASMLib header to /dev/mapper/mpathap1 and generates the ASMLib device file in / dev/oracleasm/disks with ownership as indicated in the /etc/sysconfig/oracleasm file. BUT, when we then try to create a diskgroup in our ASM instance using that disk (ORCL:VOL1 and another one VOL2), we get: SQL> create diskgroup dgroup1 external redundancy disk 'ORCL:VOL*'; create diskgroup dgroup1 external. 3, it shows: The device number disappeard.