AskDba.org Weblog » Entries tagged with "rac"
11gR2: CVU needs SCAN Listeners’ Manual Startup During Grid-Infrastructure Configuration
During configuration phase of Grid Infrastructure for cluster, CVU failed while performing post-checks. Following message is displaced in the Installation Log file: Checking Single Client Access Name (SCAN)... WARNING: PRVF-5056 : Scan Listener "LISTENER" not running Checking name resolution setup for "scan-test.abc.com"... Verification of SCAN VIP and Listener setup failed The LISTENER from Grid Infrastructure home is running fine: $ ps -eaf | grep tns /u01/app/grid_11.2/GridInfra/bin/tnslsnr LISTENER -inherit Same error is observerd by manually runnig CVU as: $ cluvfy comp scan Verifying scan Checking Single Client Access Name (SCAN)... WARNING: PRVF-5056 : Scan Listener "LISTENER" not running Checking name resolution setup for "scan-test.abc.com"... Verification of SCAN VIP and Listener setup failed Verification of scan was unsuccessful on all the specified nodes. Checking the status of SCAN using SRVCTL gives correct results: $ srvctl config scan SCAN name: scan-test.abc.com, Network: 1/165.101.124.0/255.255.254.0/eth0 SCAN VIP name: scan1, IP: /scan-test.abc.com/165.101.125.204 SCAN VIP name: scan2, IP: /scan-test.abc.com/165.101.125.235 SCAN VIP … Read entire article »
How To Discover Disk Name When LUN Number is Known (OEL5)
I am creating 11gR2 RAC setup for one of my client. Following Oracle documentation for storage, I opted for Oracle ASM and asked storage team for new physical devices. Storage admin thus provided me with a set of LUNs instead of actual physical device names like /dev/sdcxxx. Now the major task is to get the actual device name associated with LUNs. In OEL4 this is easy to get by issuing # iscsi-ls -l This command will give output like: DEVICE DETAILS: --------------- LUN ID : 0 Vendor: DELL Model: MD3000i Rev: 0670 Type: Direct-Access ANSI SCSI revision: 05 page83 type3: 6001e4f0003fa9970000083c48573c94 page80: 383438303045500a Device: /dev/sdh LUN ID : 1 Vendor: … Read entire article »
Cluvfy Reports CRS not Installed on Nodes
Before I start my post, I would like to wish all our readers a “Happy New Year”. While reviewing a 10gR2 RAC configuration I faced following errors on invoking cluvfy utility $ ./cluvfy stage -post crsinst -n prod01,prod02 -verbose Performing post-checks for cluster services setup Checking node reachability... Check: Node reachability from node "prod01-fe" Destination Node Reachable? … Read entire article »
Link:11gR2 RAC installation steps on OEL4
If you are looking for steps for 11gR2 RAC installation, you can refer to this article by Rajeev Ramdas at Dbastreet.com. Article lists down steps for installing 11gR2 RAC on 64 bit Oracle Enterprise Linux 4 (OEL4) using ASM for storage. As Raw devices are no longer supported, OCR and Voting Disks are also stored on ASM. Yes, this is one more cool New Feature available in 11gR2. … Read entire article »
OCFS2 Configuration Issue
While setting up ocfs2 for OCR and Voting disk storage with following commad: # ocfs2console After clicking on ==>cluster ==> configure nodes, I got a pop-up saying: "Could not start cluster stack. This must be resolved before any OCFS2 filesystem can be mounted." Soon I realized that the thing which takes few minutes to get installed, is going to give me a tough time. /var/log/messages shows following details: Aug 17 14:53:40 rac1 modprobe: FATAL: Module configfs not found. Aug 17 14:55:23 rac1 modprobe: FATAL: Module configfs not found. Aug 17 14:56:56 rac1 modprobe: FATAL: Module configfs not found. This prevents the configuration of OCFS2’s cluster stack, but it is mandatory to have OCFS2 cluster stack “O2CB” running, before we can start anything with OCFS2 filesystem. The stack includes the following services: * NM: Node Manager that keep track … Read entire article »
Link: Best practices for AIX RAC Database on OTN
A new whitepaper has been published on OTN which primarily discusses best practices for AIX 5.2,5.3 and 6.1 for RAC database for avoiding node eviction due to Oprocd. It also mentions recommended AIX VMO parameters and recommended patches for Oracle RAC. You can find the article at below location http://www.oracle.com/technology/products/database/clusterware/pdf/rac_aix_system_stability.pdf … Read entire article »
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