今天使用PL/SQL Developer连接到一台新的测试服务器时,遇到ORA错误:ORA-12523: TNS: 监听程序无法找到适用于客户机连接的例程.对应的监听日志文件里面错误为TNS-12523: TNS:listener could not find instance appropriate for the client connection 首先使用oerr命令查看ORA-12523错误提示的详细内容 [oracle@DB-Server admin]$ oerr ora 12523
问题描述1: C:\Users\Administrator>lsnrctl start LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 12-12月-20144:50 Copyright (c) 1991, 2010, Oracle. All rights reserved. 启动tnslsnr: 请稍候... Failed to start service, error 193.TNS-12560: TNS:
1.查看当前连接进程数SQL>select count(*) from v$process;2.查看连接数上限SQL>select value from v$parameter where name = 'processes'; 3.查看当前数据库的processes设置SQL> show parameter processesNAME TYPE VALUE db_writer_processes integer 1gcs_server_processes integer 0job_qu