Oracle报错ASM磁盘组不存在或没有mount解决办法
2018-06-14 16:50:11
详情:
案例:Oracle报错ASM磁盘组不存在或没有mount
环境:RHEL 6.5 + Oracle Standby RAC 11.2.0.4
我做Standby RAC实验时,在恢复控制文件时,报错无法在磁盘组创建文件,具体报错内容如下:
[oracle@jystdrac1 standby]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Wed Aug 9 22:35:41 2017Copyright (c) 1982, 2011, Oracle and/or its affiliates.All rights reserved. connected to target database: JYZHAO (not mounted) RMAN> restore controlfile from '/public/hotback/jyzhao/standby/control_for_standby.ctl'; Starting restore at 09-AUG-17using target database control file instead of recovery catalogallocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=34 instance=jyzhao1 device type=DISK channel ORA_DISK_1: restoring control fileRMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of restore command at 08/09/2017 22:36:11ORA-19870: error while restoring backup piece /public/hotback/jyzhao/standby/control_for_standby.ctl ORA-19504: failed to create file "+DATA"ORA-17502: ksfdcre:4 Failed to create file +DATAORA-15001: diskgroup "DATA" does not exist or is not mounted ORA-15040: diskgroup is incomplete ORA-15040: diskgroup is incomplete ORA-15040: diskgroup is incomplete RMAN> exit
马上去查磁盘组是否正常mount,结果是正常的:
[root@jystdrac1 ~]# su - grid[grid@jystdrac1 ~]$ asmcmd ASMCMD> lsdg StateTypeRebalSectorBlock AUTotal_MBFree_MBReq_mir_free_MBUsable_file_MBOffline_disksVoting_filesName MOUNTEDEXTERNN 512 40961048576 15360152610 152610 NDATA/ MOUNTEDEXTERNN 512 409610485765120 5025050250 NFRA/ MOUNTEDNORMALN 512 409610485763072 2146 1024 5610 YOCR/ ASMCMD>
去看数据库的alert日志:
Wed Aug 09 22:29:50 2017NOTE: Loaded library: System ORA-15025: could not open disk "/dev/asm-diske"ORA-27041: unable to open file Linux-x86_64 Error: 13: Permission denied Additional information: 9ORA-15025: could not open disk "/dev/asm-diskf"ORA-27041: unable to open file Linux-x86_64 Error: 13: Permission denied Additional information: 9ORA-15025: could not open disk "/dev/asm-diskg"ORA-27041: unable to open file Linux-x86_64 Error: 13: Permission denied Additional information: 9Wed Aug 09 22:29:50 2017SUCCESS: diskgroup DATA was dismountedERROR: diskgroup DATA was not mounted ORA-15025: could not open disk "/dev/asm-diskh"ORA-27041: unable to open file Linux-x86_64 Error: 13: Permission denied Additional information: 9SUCCESS: diskgroup FRA was dismountedERROR: diskgroup FRA was not mounted
居然说是无法打开asm磁盘,迅速去查asm磁盘情况:
[root@jystdrac1 ~]# ls -l /dev/asm*brw-rw---- 1 grid asmadmin 8,16 Aug9 22:55 /dev/asm-diskb brw-rw---- 1 grid asmadmin 8,32 Aug9 22:55 /dev/asm-diskc brw-rw---- 1 grid asmadmin 8,48 Aug9 22:55 /dev/asm-diskd brw-rw---- 1 grid asmadmin 8,64 Aug9 22:55 /dev/asm-diske brw-rw---- 1 grid asmadmin 8,80 Aug9 22:11 /dev/asm-diskf brw-rw---- 1 grid asmadmin 8,96 Aug9 22:11 /dev/asm-diskg brw-rw---- 1 grid asmadmin 8, 112 Aug9 22:55 /dev/asm-diskh /dev/asm: total 0[root@jystdrac1 ~]# id griduid=700(grid) gid=800(oinstall) groups=800(oinstall),700(asmadmin),701(asmdba),702(asmoper) [root@jystdrac1 ~]# id oracleuid=800(oracle) gid=800(oinstall) groups=800(oinstall),701(asmdba),801(dba),802(oper)
发现磁盘组权限没有问题,grid和oracle用户的组也都符合官方要求。
拿着alert日志的关键报错信息“ORA-15025 ORA-27041 Linux-x86_64 Error: 13: Permission denied”去查MOS:
找到一篇MOS匹配:Database Will Not Mount: ORA-15025, ORA-27041, 'Permission denied', ORA-15081 (文档 ID 1378747.1)
最终说是
CAUSE However the problem is that the Database oracle executable is not assigned to the ASM OSASM group (instead is assigned to the 'oinstall' group):-rwsr-s--x 1 oracle oinstall 210973186 May 31 21:25 /appl/oracle/OracleHomes/11.2.0/bin/oracle It needs to be: -rwsr-s--x 1 oracle asmadmin 210973186 May 31 21:25 /appl/oracle/OracleHomes/11.2.0/bin/oracle
按照MOS的说法,去查oracle用户的这个oracle二进制文件的属组,果然发现是oinstall:
[root@jystdrac1 ~]# su - oracle[oracle@jystdrac1 ~]$ cd $ORACLE_HOME/bin/ [oracle@jystdrac1 bin]$ ls -l oracle -rwsr-s--x 1 oracle oinstall 239626641 Aug6 00:42 oracle
将其改为MOS说的asmadmin,
As the
ON NODE1: [root@jystdrac1 bin]# pwd/opt/app/oracle/product/11.2.0/dbhome_1/bin [root@jystdrac1 bin]# ls -l oracle-rwsr-s--x 1 oracle oinstall 239626641 Aug6 00:42 oracle [grid@jystdrac1 bin]$ ./setasmgidwrap o=/opt/app/oracle/product/11.2.0/dbhome_1/bin/oracle [root@jystdrac1 bin]# ls -l oracle-rwsr-s--x 1 oracle asmadmin 239626641 Aug6 00:42 oracle ON NODE2: [root@jystdrac2 bin]# pwd/opt/app/oracle/product/11.2.0/dbhome_1/bin [root@jystdrac2 bin]# ls -l oracle-rwsr-s--x 1 oracle oinstall 239626641 Aug6 00:48 oracle [root@jystdrac2 bin]# chown oracle:asmadmin oracle[root@jystdrac2 bin]# ls -l oracle-rwxr-x--x 1 oracle asmadmin 239626641 Aug6 00:48 oracle [root@jystdrac2 bin]# chmod 6751 oracle[root@jystdrac2 bin]# ls -l oracle-rwsr-s--x 1 oracle asmadmin 239626641 Aug6 00:48 oracle
如上,两个节点都需要改正确,我这里特意演示了两种方法,在一节点使用MOS推荐的方法修改可以一次成功修改,且能保证不改错,只是等的时间长。在二节点直接通过操作系统命令修改,速度快,需要确认最终改对。
最后重启库再试恢复控制文件:
[oracle@jystdrac1 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Wed Aug 9 23:16:38 2017Copyright (c) 1982, 2013, Oracle.All rights reserved. Connected to an idle instance. SQL> startup nomount pfile=$ORACLE_HOME/dbs/pfile_for_standby.txt ORACLE instance started. Total System Global Area534462464 bytes Fixed Size2254952 bytes Variable Size 436209560 bytes Database Buffers 92274688 bytes Redo Buffers3723264 bytes SQL> exitDisconnected from Oracle Database 1g Enterprise Edition Release 11.2.0.4.0 - 4bit Production With the Partitioning, Real Application Clusters, OLAP, Data Mining and Real Application Testing options [oracle@jystdrac1 ~]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Wed Aug 9 23:18:28 2017Copyright (c) 1982, 2011, Oracle and/or its affiliates.All rights reserved. connected to target database: JYZHAO (not mounted) RMAN> restore controlfile from '/public/hotback/jyzhao/standby/control_for_standby.ctl'; Starting restore at 09-AUG-17using target database control file instead of recovery catalogallocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=34 instance=jyzhao1 device type=DISK channel ORA_DISK_1: restoring control filechannel ORA_DISK_1: restore complete, elapsed time: 00:00:16output file name=+DATA/mynas/controlfile/current.256.951607115output file name=+FRA/mynas/controlfile/current.256.951607123Finished restore at 09-AUG-17RMAN>
成功备份没有问题,alert也不再报错,其实之前在一些客户的生产环境,遇到一些类型的问题,也都和这二进制文件的权限相关,如此看来,掌握这个Oracle二进制文件的权限的小知识点也很重要哦。
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