1.TNS-00525: Insufficient privilege for operation
Started with pid=30869 Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ora11g)(PORT=1521))) Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521))) TNS-12555: TNS:permission denied TNS-12560: TNS:protocol adapter error TNS-00525: Insufficient privilege for operation Linux Error: 1: Operation not permitted No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ora11g)(PORT=1521))) 2014-07-10 14:17:16.811000 +08:00 System parameter file is /u01/app/11.2.0/grid/network/admin/listener.ora Log messages written to /u01/app/grid/diag/tnslsnr/ora11g/listener/alert/log.xml Trace information written to /u01/app/grid/diag/tnslsnr/ora11g/listener/trace/ora_30888_47191985552112.trc Trace level is currently 0
检查/tmp/.oracle 和 /var/tmp/.oracle 这2个文件夹的属组是否正确，如果不正确，改为 chown -R grid:oinstall
2.在保证上面2个目录权限正确的情况下，连接报错ORA-12537: TNS:connection closed
[oracle@ora11g admin]$ tnsping 192.168.0.164/isc TNS Ping Utility for Linux: Version 11.2.0.3.0 - Production on 10-JUL-2014 14:20:44 Copyright (c) 1997, 2011, Oracle. All rights reserved. Used parameter files: /u01/app/oracle/product/11.2.0/db_1/network/admin/sqlnet.ora Used HOSTNAME adapter to resolve the alias Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=isc))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.164)(PORT=1521))) OK (0 msec) [oracle@ora11g admin]$ sqlplus isc/isc@192.168.0.164/isc SQL*Plus: Release 11.2.0.3.0 Production on Thu Jul 10 14:21:09 2014 Copyright (c) 1982, 2011, Oracle. All rights reserved. ERROR: ORA-12537: TNS:connection closed Enter user-name:
tnsping正常，监听状态正常，但是连接报错ora-12537。
检查$ORACLE_HOME/bin/oracle的权限应该为6751
[oracle@ora11g admin]$ ls -la $ORACLE_HOME/bin/oracle -rwxr-s--x 1 oracle asmadmin 232399473 Nov 11 2013 /u01/app/oracle/product/11.2.0/db_1/bin/oracle [oracle@ora11g admin]$ chmod 6751 $ORACLE_HOME/bin/oracle [oracle@ora11g admin]$ ls -la $ORACLE_HOME/bin/oracle -rwsr-s--x 1 oracle asmadmin 232399473 Nov 11 2013 /u01/app/oracle/product/11.2.0/db_1/bin/oracle
官方的解释：
Applies to:
Oracle Net Services - Version: 8.1.7.0 to 11.2.0.1 - Release: 8.1.7 to 11.2
Generic UNIX
Checked for relevance on 30-Apr-2010
Symptoms
Connection to the database server fails with ORA-12546 or ORA-12537
Local connections working fine but the connection via listener fails with ORA-12537 or ORA-12547
Cause
Permissions on oracle binary ( $ORACLE_HOME/bin/oracle ) are not set correctly.
Solution
The OS level error message in the listener log "Linux Error: 13: Permission denied" indicates that the listener was not able to hand off the connection to oracle processes or not able to spawn a new dedicated user process because of lack of permission at the OS level. To resolve the error -
1. Check and correct the permission on /var/tmp/.oracle directory. Permissions on this directory should be 777 with sticky bit set.
# chmod 01777 /var/tmp/.oracle
2. Check and correct permissions on $ORACLE_HOME/bin/oracle binary and make sure that it is set to 6751.
$ chmod 6751 $ORACLE_HOME/bin/oracle