解决DGMGRL Unable to connect to database ORA-12541: TNS:no listener问题
晚上配了一套11.2.0.2的DataGuard物理备库,准备用DGMGRL做切换测试,结果发现在切换过程中会遇到"Unabletoconnecttodatabase"的问题,具体日志如下: DGMGRL>switchovertodgogg
PerformingswitchoverNOW,pleasewait...
Newprimarydatabase"dgogg"isopening...
Ope