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Can not see the ASM disks while using dbca [message #498024]

Tue, 08 March 2011 05:02

snowball
Messages: 229
Registered: April 2006
Location: China

Senior Member

Hi, guys
I met a problem when using dbca with ASM. I can't see any ASM disks while create a new ASM disk group.

Before installing, I have installed oracleasmlib related packages:

oracleasm-support 
oracleasm-2.6.18-194.el
oracleasm-2.6.18-194.el
oracleasm-2.6.18-194.el
oracleasm-2.6.18-194.el
oracleasm-2.6.18-194.el
oracleasmlib

Here is the ASM instance pfile:

*.asm_diskstring='guilin:VOL*'
*.background_dump_dest='/u01/app/oracle/admin/+ASM/bdump'
*.core_dump_dest='/u01/app/oracle/admin/+ASM/cdump'
*.user_dump_dest='/u01/app/oracle/admin/+ASM/udump'
*.instance_type='asm'
*.large_pool_size=12M

The ASM instance can be started at nomount stage.

SQL> startup
ASM instance started

Total System Global Area   83886080 bytes
Fixed Size                  1217836 bytes
Variable Size              57502420 bytes
ASM Cache                  25165824 bytes
ORA-15110: no diskgroups mounted

The Cluster Manager is started:

[root@asm ~]# ps -ef | grep cssd
root      4429     1  0 02:13 ?        00:00:00 /bin/su -l oracle -c sh -c 'cd /u01/app/oracle/product/10.2.0/db_1/log/asm/cssd;  ulimit -c unlimited; exec /u01/app/oracle/product/10.2.0/db_1/bin/ocssd '
oracle    4518  4429  0 02:14 ?        00:00:12 /u01/app/oracle/product/10.2.0/db_1/bin/ocssd.bin

The ASM disks I have created:

[root@asm ~]# /etc/init.d/oracleasm listdisks
VOL1
VOL2
VOL3
[root@asm ~]# /etc/init.d/oracleasm scandisks
Scanning the system for Oracle ASMLib disks:               [  OK  ]
[root@asm ~]# ll /dev/oracleasm/disks/VOL*
brw-rw---- 1 oracle dba 8, 33 03-09 01:20 /dev/oracleasm/disks/VOL1
brw-rw---- 1 oracle dba 8, 49 03-09 01:20 /dev/oracleasm/disks/VOL2
brw-rw---- 1 oracle dba 8, 65 03-09 01:20 /dev/oracleasm/disks/VOL3

I can't find where the problem is.
Could someone kindly help me find out the problem?
Thanks very much,

BR,Milo

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Re: Can not see the ASM disks while using dbca [message #498173 is a reply to message #498024]

Wed, 09 March 2011 02:32

John Watson
Messages: 8963
Registered: January 2010
Location: Global Village

Senior Member

I think your asm_diskstring could be the problem. As you are using the ASMlib, I would remove the parameter and rely on the default.

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Re: Can not see the ASM disks while using dbca [message #498267 is a reply to message #498173]

Wed, 09 March 2011 06:55

snowball
Messages: 229
Registered: April 2006
Location: China

Senior Member

Hi, John
Thanks for helping.
Follow your tips, I am tried to use the full path of the disks

'/dev/oracleasm/disks/VOL*'

Then the disks show finally.

I am thinking if it's a bug related problem.

Thanks very much. Smile

BR,
Milo

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