How To Determinate If An EMCPOWER Partition Is Valid For ASMLIB

If you are trying to create an ASMLIB disk using an emcpower# partition and you get the next error:

ASMdisk:asmtool:Device"/dev/emcpowera11"isnotapartition[FAILED]

Then you will need to determinate if the emcpower# partition is valid.

解决步骤如下：

In order to confirm the emcpower# partition is valid:

1) Check if you can create a tablespace directly on the block partition:

[root@dbaasm~]#cd/dev
[root@dbaasmdev]#ls-lemcpowerd1
brw-rw----1rootdisk3,19Apr2916:00emcpowerd1
[root@dbaasmdev]#chmod777emcpowerd1
[root@dbaasmdev]#ls-lemcpowerd1
brwxrwxrwx1rootdisk3,19Apr2916:00emcpowerd1
[root@dbaasmdev]#exit

dbaasm.us.oracle.com:/u01/app/oracle/11.1/db:TEST:oracle>sqlplus“/as
sysdba”

SQL*Plus:Release11.1.0.6.0-ProductiononThuMay109:09:022008

Copyright(c)1982,2007,Oracle.Allrightsreserved.


Connectedto:
OracleDatabase11gEnterpriseEditionRelease11.1.0.6.0-Production
WiththePartitioning,OLAP,DataMiningandRealApplicationTestingoptions

SQL>createtablespacetestdatafile'/dev/emcpowerd1'size100M;

Tablespacecreated.

2) If so, then drop the previous tablespace.

3) Then check if a diskgroup can be created directly on the block partition:

Connectasrootandexecute:

#ddif=/dev/zeroof='/dev/emcpowerb1'bs=8192count=12800

Thenconnectasoracle,andthenconnecttotheASMinstancesandexecute:

SQL>altersystemsetasm_diskstring='/dev/emcpowerb1'scope=memory;

SQL>creatediskgroupTESTexternalredundancydisk'/dev/emcpowerb1';
Diskgroupcreated.

4) IfthetablespaceanddiskgroupcanbecreatedirectlyontheblockpartitionthenthiscouldbeaproblemwithASMLIBconfiguration.ThereforeyouwillneedtocheckifthecorrectASMLIBrpmswereinstalled.

5) Alternatively,youcancheckiftheproblemisreproducibleonanotheremcpower#partitionorasktheSAtorecreatetheoriginalone.

From Oracle

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