ORA-15186: ASMLIB error function = [asm_open], error = , mesg = [Operation not permitted]
参考 Metalink Note:398622.1
Applies to:Oracle Server - Enterprise Edition - Version: 10.1.0
This problem can occur on any platform.
Oracle Database ASM (Automatic Storage Management) instance
ORA-15186: ASMLIB error function = [asm_open], error = , mesg = [Operation not permitted].
The error occurs periodically, most notably during ASM instance startup and as a result of V$ASM_... view queries, as well as during RMAN backup.
Despite the error, however, no adverse affects are observed.
When using a combination of oracleasm disks (/dev/oracleasm/disks/*) with raw devices (/dev/raw/*), in particular where some raw devices are not owned by or accessible to the oracle user) as well as ASM instance parameter 'ASM_DISKSTRING' with an unspecified value, error ORA-15186 is likely to occur.
Explicitly setting 'ASM_DISKSTRING' is recommended as it increases oracle ASM disk scan performance by restricting the number of devices scanned to only those marked with the default provisioned 'ORCL:' label prefix or scanning only a given subset of devices.
Examples of setting ASM_DISKSTRING parameter include:
SQL> alter system set asm_diskstring='ORCL:*' scope=both;
SQL> alter system set asm_diskstring='/dev/raw/raw6,/dev/raw/raw7,/dev/raw/raw8' scope=both;
SQL> alter system set asm_diskstring='/dev/mapper/mpath0,/dev/mapper/mpath1,/dev/mapper/mpath2' scope=both;
Note: whilst limiting the 'ASM_DISKSTRING' value to a specific list of disks ensures optimal ASM instance scan performance, the parameter value must be modified to include any new devices whenever oracleasm disks are added or removed.
Note 391136.1- New ASMLib / oracleasm Disk Gets "header_status=Unknown" - Cannot be Added to Diskgroup
KeywordsAUTOMATIC~STORAGE~MANAGEMENT; RAW~DEVICE; ORACLEASM; ASMLIB;
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