ORACLE,RAC ORA-00304: requested INSTANCE_NUMBER is busy

[grid@node1 ~]$sqlplus / as sysasm

SQL*Plus: Release 11.2.0.1.0 Production on Thu Mar 21 10:13:07 2013


Copyright (c) 1982, 2009, Oracle.  All rights reserved.


Connected to an idle instance.

SQL> startup

ORA-00304: requested INSTANCE_NUMBER is busy


SQL> exit
Disconnected

[grid@node1 ~]$ ps -ef | grep oracle | grep ASM
grid     13701     1  0 Mar19 ?        00:00:00 oracle+ASM1_asmb_+asm1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
grid     13738     1  0 Mar19 ?        00:00:01 oracle+ASM1_ocr (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
grid     32183     1  0 Mar20 ?        00:00:00 oracle+ASM1_asmb_orcl1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oracle   32688     1  0 Mar20 ?        00:00:00 ora_smco_orcl1


[grid@node1 ~]$ env | grep ORACLE_SID
ORACLE_SID=+ASM
与后台进程一对比发现，后台进程中为+ASM1 ，而环境变量为 +ASM ，

[grid@node1 ~]$ export ORACLE_SID=+ASM1

[grid@node1 ~]$ sqlplus / as sysasm


SQL*Plus: Release 11.2.0.1.0 Production on Thu Mar 21 10:19:39 2013


Copyright (c) 1982, 2009, Oracle.  All rights reserved.




Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options


SQL>


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