ORA-09925 Linux-x86_64 Error: 2: No such file or directory

原文链接：http://blog.csdn.net/evils798/article/details/8223303

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 DBCA删除数据库所有实例后，本想用RMAN duplicate方式克隆DB，因此在$ORACLE_BASE目录下创建了相关的目录admin/dupl/adump ,admin/dupl/dpump

  在使用sqlplus正常连接空闲实例，手贱却执行了startup命令，oracle果断出现ORA-09925错误


 [oracle@tips ~]$ sqlplus  / as sysdba

 SQL*Plus: Release 11.2.0.3.0 Production on Mon Nov 26 04:27:58 2012

 Connected to an idle instance.

 SQL> startup
 ORA-09925: Unable to create audit trail file
 Linux-x86_64 Error: 2: No such file or directory
 Additional information: 9925
 SQL> exit


 [oracle@tips ~]$ sqlplus  / as sysdba

 SQL*Plus: Release 11.2.0.3.0 Production on Mon Nov 26 04:18:28 2012

 Copyright (c) 1982, 2011, Oracle.  All rights reserved.


 ERROR:
 ORA-09925: Unable to create audit trail file
 Linux-x86_64 Error: 2: No such file or directory
 Additional information: 9925
 ORA-01075: you are currently logged on

 Enter user-name:
 ERROR:
 ORA-01017: invalid username/password; logon denied


 解决思路
 1.首先确定$ORACLE_BASE目录下的adump是否存在，文件名，路径是否正确，权限是否正确
 admin下的格式是$ORACLE_SID/adump

 [oracle@tips ~]$ cd $ORACLE_BASE
 [oracle@tips oracle]$ ls
 admin  cfgtoollogs  checkpoints  diag  fast_recovery_area  oradata  product
 [oracle@tips oracle]$ cd admin/dupl/
 adump/  dpdump/
 [oracle@tips oracle]$ cd admin/dupl/
 [oracle@tips dupl]$ ls -ld adump/
 drwxr-xr-x 2 oracle oinstall 4096 Nov 26 04:19 adump

 排除adump目录有无问题，排除adump权限问题

 2.检查是否空间adump使用的分区是否已经过满
 [oracle@tips dupl]$ df -h
 Filesystem            Size  Used Avail Use% Mounted on
 /dev/sda1              34G   24G  8.0G  75% /
 /dev/sda2              99M  5.8M   88M   7% /home
 tmpfs                 1.0G     0  1.0G   0% /dev/shm
 /dev/sdb1              60G  4.6G   52G   9% /u01

 排除分区过满问题

 3.检查共享内存段是否被stuck，在操作系统级别查看

 [oracle@tips ~]$ ipcs -a

 ------ Shared Memory Segments --------
 key        shmid      owner      perms      bytes      nattch     status
 0x00000000 3342337    root      644        80         2
 0x00000000 3375107    root      644        16384      2
 0x00000000 3407876    root      644        280        2
 0x00000000 3506182    oracle    640        33554432   17
 0x00000000 3538951    oracle    640        5016387584 17
 0x0d99ce94 3571720    oracle    640        2097152    17

 ------ Semaphore Arrays --------
 key        semid      owner      perms      nsems
 0x59451e7c 131073     oracle    640        154

 ------ Message Queues --------
 key        msqid      owner      perms      used-bytes   messages


 尽管没有任何数据文件，参数文件，我们可以在系统中仍可以看到，系统确实分配了共享内存段和信号量，oracle也启动了相关进程
 [oracle@tips dupl]$ ps -ef | grep ora_
 oracle    4977     1  0 04:28 ?        00:00:00 ora_pmon_dupl
 oracle    4979     1  0 04:28 ?        00:00:00 ora_psp0_dupl
 oracle    4981     1  0 04:28 ?        00:00:00 ora_vktm_dupl
 oracle    4985     1  0 04:28 ?        00:00:00 ora_gen0_dupl
 oracle    4987     1  0 04:28 ?        00:00:00 ora_diag_dupl
 oracle    4989     1  0 04:28 ?        00:00:00 ora_dbrm_dupl
 oracle    4991     1  0 04:28 ?        00:00:00 ora_dia0_dupl
 oracle    4993     1  1 04:28 ?        00:00:00 ora_mman_dupl
 oracle    4995     1  0 04:28 ?        00:00:00 ora_dbw0_dupl
 oracle    4997     1  0 04:28 ?        00:00:00 ora_lgwr_dupl
 oracle    4999     1  0 04:28 ?        00:00:00 ora_ckpt_dupl
 oracle    5001     1  0 04:28 ?        00:00:00 ora_smon_dupl
 oracle    5003     1  0 04:28 ?        00:00:00 ora_reco_dupl
 oracle    5005     1  0 04:28 ?        00:00:00 ora_mmon_dupl
 oracle    5007     1  0 04:28 ?        00:00:00 ora_mmnl_dupl
 oracle    5009     1  0 04:28 ?        00:00:00 ora_d000_dupl
 oracle    5011     1  0 04:28 ?        00:00:00 ora_s000_dupl
 oracle    5022  4912  0 04:28 pts/2    00:00:00 grep ora_

 由以上数据表明，系统分配了共享内存段，所以即使$ORACLE_BASE目录下有adump，权限也正确，
 但是共享内存和信号量已经被卡住，仍会导致使用sqlplus时ORA-09925错误

 解决方案有两种
 1.重新启动操作系统，释放共享内存段和信号量，（重新启动系统耗时长）

 2.在操作系统级别使用ipcsrm  -m ，ipcsrm -s 删除共享内存段和信号量即可

 [oracle@tips ~]$ ipcrm  -m 3506182
 [oracle@tips ~]$ ipcrm  -m 3538951
 [oracle@tips ~]$ ipcrm  -m 3571720
 [oracle@tips ~]$ ipcrm  -s 131073
 [oracle@tips ~]$ sqlplus  / as sysdba

 SQL*Plus: Release 11.2.0.3.0 Production on Mon Nov 26 04:19:28 2012

 Copyright (c) 1982, 2011, Oracle.  All rights reserved.

 Connected to an idle instance.