bdump目录对应的x权限丢失导致的oracle 数据库异常
rhel6.3 x64bit ,oracle 11.2.0.4 x64bit [oracle@rhel63single test]$ pwd/u01/app/oracle/diag/rdbms/test/test[oracle@rhel63single test]$ chmod u-x trace[oracle@rhel63single test]$ lltotal 100drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 aler
rhel6.3 x64bit ,oracle 11.2.0.4 x64bit
[oracle@rhel63single test]$ pwd /u01/app/oracle/diag/rdbms/test/test [oracle@rhel63single test]$ chmod u-x trace [oracle@rhel63single test]$ ll total 100 drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 alert drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 cdump drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 hm drwxr-x---. 11 oracle oinstall 4096 Jan 8 20:58 incident drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 incpkg drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 ir drwxr-x---. 2 oracle oinstall 4096 Jan 8 20:58 lck drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 metadata drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 metadata_dgif drwxr-x---. 2 oracle oinstall 4096 Feb 20 2013 metadata_pv drwxr-x---. 2 oracle oinstall 4096 Jan 8 20:58 stage drwxr-x---. 2 oracle oinstall 4096 Jan 8 20:58 sweep drw-r-x---. 11 oracle oinstall 49152 Jan 8 20:58 trace --->缺少了x权限,而该目录是bdump目录(background_dump_dest所指定的目录)
下面来看db server本机登陆sqlplus 有什么现象:
[oracle@rhel63single ~]$ sqlplus / as sysdb SQL*Plus: Release 11.2.0.4.0 Production on Thu Jan 8 21:04:16 2015 Copyright (c) 1982, 2013, Oracle. All rights reserved. ERROR: ORA-12547: TNS:lost contact Enter user-name:
3分钟左右,才报上述错误.
而从oracle db client(pl/sql developer)连接该db,报:
ORA-12537: TNS: connection closed
此时,trace目录也是进不去的:
[oracle@rhel63single test]$ cd trace -bash: cd: trace: Permission denied
解决该问题的方法其实很简单:
[oracle@rhel63single test]$ chmod u+x trace

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