DGMGRL error ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

A common error we face while doing switchover operation using DGMGRL. DGMGRL> switchover to std_testdb; Performing switchover NOW, please wait… Operation requires a connection to instance “testdb” on database “std_testdb” Connecting to instance “testdb”… Connected. New primary database “std_testdb” is opening… Operation requires startup of instance “testdb” on database “testdb” Starting instance “testdb”… Unable to […]

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