Step by Step 10g ASM Installation on Linux

Question

Hello,
Can any body provide me link for step by step 10g ASM Installation on linux (i.e from disk partitioning to final configuration). I searched on GooGle but didn't find ASM alone, though there were many step by step for RAC environment. I want to first learn ASM alone. Please help me as I'm first time learning ASM.
Looking for Kind reply
Regards,
Abbasi

Answer 1

Abbasi wrote:
Hello,
Can any body provide me link for step by step 10g ASM Installation on linux (i.e from disk partitioning to final configuration). I searched on GooGle but didn't find ASM alone, though there were many step by step for RAC environment. I want to first learn ASM alone. Please help me as I'm first time learning ASM.
Looking for Kind reply
Regards,
AbbasiHi Abbasi,
It would be better if let me know version of Linux, how you plan to use the disk (direct or UDEV), RAC or Single instance.
Anyway, I'll assume you've using OEL/RHEL 5, UDEV for Single Instance (Oracle 10g installed) and only one disk (/dev/asm_disk1) configured for testing purpose.
Creating ASM instance on Linux (Single Instance) using DBCA
1. Add disk to Linux server
2. Configure UDEV for the device. E.g /dev/sdb -> /dev/asm_disk1 //check Oracle documentation for configure UDEV on RHEL/OEL 5. You can directly use /dev/sdc for testing purpose.
3. Change the owner of the disk. e.g. chown oracle:oinstall /dev/asm_disk1
4. As root user, run Oracle CSS script. The Cluster Synchronization Services (CSS) daemon provides cluster services for ASM, communication between the ASM and database instances, and other essential services
# $ORACLE_HOME/bin/localconfig add
5. As oracle user, run DBCA (X11 needed)
$ dbca
6. Select the "Configure Automatic Storage Management" option, then click the "Next" Button.
7. Enter a password for the ASM instance, then click the "Next" button.
8. On the confirmation screen, click the "OK" button to create the ASM instance
9. Once the ASM instance is created, you are presented with the "ASM Disk Groups" screen. Click the "Create New" button.
10. On the "Create Disk Group" screen, enter Disk Group Name of e.g. "DATA" and select the required level of redundancy.
•     External - ASM does not mirror the files. This option should only be used if your disks are already protected by some form of redundancy, like RAID.
•     Normal - ASM performs two-way mirroring of all files.
•     High - ASM performs three-way mirroring of all files.
11. If you didn't find any disk, click "Change Disk Discovery Path..." and enter "/dev/asm_disk1"
12. Select "External" for redundancy, tick the disk (/dev/asm_disk1) and click "OK" button.
13. On the "ASM Disk Groups" screen. Click the "Finish" button.
To access the ASM instance :
1. As oracle user, export the ORACLE_SID
$ export ORACLE_SID=+ASM
2. sqlplus "/as sysdba"
3. SQL> select name, total_mb, free_mb from v$asm_diskgroup;
SQL> select name, path, header_status from v$asm_disk;
To access the ASM command line utility:
1. As oracle user, export the ORACLE_SID
$ export ORACLE_SID=+ASM
2. Enter the asmcmd command
$ asmcmd
You also can refer to :
<a class="jive-link-external" href="http://www.idevelopment.info/data/Oracle/DBA_tips/Automatic_Storage_Management/ASM_10.shtml">http://www.idevelopment.info/data/Oracle/DBA_tips/Automatic_Storage_Management/ASM_10.shtml</a>
<a class="jive-link-external" href="http://forums.oracle.com/forums/thread.jspa?threadID=1102203&tstart=1">how to create an asm instance manaually? oracle 11gr2.
Regards,
Hafiz Abdullah