ORA-12516: TNS: 监听程序找不到符合协议堆栈要求的可用处理程
select count(*) from v$process; 取得当前进程数select value from v$parameter where name = 'processes';查看进程数上限show parameter processesshow parameter sessionsalter system set processes=300 scope=spfile;alter system set sessions=335 scope=spfile;需要重启数据库生效 ...