AskDba.org Weblog » Entries tagged with "ASM"
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 »
11gR2: Steps to Rename ASM Diskgroup with DB files
11gR2 introduced renamedg utility to rename diskgroups. I would discuss renaming a diskgroup on a Standalone Grid Infrastructure installation with Oracle Restart. Before you use the command, ensure that ASM diskgroup is dismounted. Below is syntax for the command. You can refer to 11gR2 docs for details renamedg [phase={ one|two |both } ] dgname=diskgroup newdgname=newdiskgroup [config=configfile] [ asm_diskstring=discoverystring, discoverystring ... ] [ clean={true|false} ] [ check={true|false} ] [ confirm={true|false}] [ verbose={ true|false} ] [ keep_voting_files={true|false}] Basically we have two phases of using renamedg command, phase … Read entire article »
11gR2 – SysAsm vs SysDba
SYSASM role was introduced in 11gR1 and was designed to administer ASM instances. In 11gR1 , if you connected with SYSDBA role , you used to get a warning which was only recorded in alert log (Refer to my earlier post here). But things have changed in 11gR2. While trying to dismount a Diskgroup, I found following errors SQL> alter diskgroup flash_arc mount; alter diskgroup flash_arc mount * ERROR at line 1: ORA-15032: not all alterations performed ORA-15260: permission denied on ASM disk group Above error indicates that I do not have permission on the ASM Diskgroup. As per 11gR2 documentation, SYSASM privilege is used for carrying out administration tasks on ASM Diskgroups. SYSDBA privilege can be used only for creating/deleting aliases and querying ASM dictionary views. Frankly speaking, you should unlearn the habit of connecting as “/ … 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 »
Get Upgrading: Steps To Upgrade To 11gR2
As 11gR2 is out for Linux, I decided to upgrade one of my existing 10.2.0.3 database to 11.2.0.1 to get the look and feel of 11gR2. Direct upgrade to 11gR2 is supported from 9.2.0.8 or higher, 10.1.0.5 or higher, 10.2.0.2 or higher and 11.1.0.6 or higher. If you have a database 9.2.0.6 then first you need to upgrade to intermediate release i.e 9.2.0.8 then to 11.2.0.1. 9.2.0.6==>9.2.0.8==>11.2.0.1 8.1.7.0==>8.1.7.4==>10.2.0.4==>11.2.0.1 I will discuss how to upgrade an existing Single Instance … Read entire article »
11gR2 Database Installation with ASM on OEL5
I will be listing down steps for 11g Release 2 installation on Linux x86. There has been few changes incorporated in 11gR2 which must be given due consideration before starting installation. ASM instance now runs from new Oracle Home called Grid Infrastructure. If you wish to use ASM for storing database files, then you should install first Oracle grid infrastructure for a standalone server. It is also required if you wish to use Oracle Restart feature … Read entire article »
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