1、客户端连接不上数据库。2、查看数据库的实例状态为OPEN,并且alert_SID.log没有错误3、查看数据库监听器时出现下面的信息:$ lsnrctl statusLSNRCTL for IBM/AIX RISC System/6000: Version 10.2.0.1.0 - Production on 05-DEC-2011 09:13:49 Copyright (c) 1991, 2005, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=testdb)(PORT=1568)))不能正常查询出监听实例的信息,就一直不动了。好像挂起的现象。Lsnrctl stop, lsnrctl start都不能正常执行,情况像lsnrctl status一样。
解决:在OS中杀死lsnrct的进程查询:$ ps -ef|grep lsnr oraoms 598058 1 0 Oct 08 - 28:38 /home/oraoms/OraHome_1/bin/tnslsnr LISTENER -inherit oraoms 970884 1790128 0 09:19:21 pts/0 0:00 grep lsnr oraoms 1814580 598058 0 07:26:15 - 0:00 /home/oraoms/OraHome_1/bin/tnslsnr LISTENER -inherit$ 杀死进程:$ kill 1814580$ ps -ef|grep lsnr oraoms 598058 1 1 Oct 08 - 28:38 /home/oraoms/OraHome_1/bin/tnslsnr LISTENER -inherit oraoms 1007764 1790128 0 09:19:42 pts/0 0:00 grep lsnr$ kill 598058$ ps -ef|grep lsnr oraoms 598060 1790128 0 09:20:00 pts/0 0:00 grep lsnr $ lsnrctl status LSNRCTL for IBM/AIX RISC System/6000: Version 10.2.0.1.0 - Production on 05-DEC-2011 09:20:04 Copyright (c) 1991, 2005, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=testdb)(PORT=1568)))TNS-12541: TNS:no listener TNS-12560: TNS:protocol adapter error TNS-00511: No listener IBM/AIX RISC System/6000 Error: 79: Connection refused$再次启动监听器,则可以解决。$ lsnrctl startOracle的Ora-00031 错误ORA-12514:RMAN连接报错解决相关资讯 oracle数据库教程
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