NID-00600: Internal Error - [30] [3113] [0] [0] and ORA-00600: internal error code, arguments: [control file RSBY_RDI/IC mismatch], [3], []

Issue:

Below errors are encountered when a renaming a standby database to use as cloned instance.

NID-00600: Internal Error - [30] [3113] [0] [0]
ORA-00600: internal error code, arguments: [control file RSBY_RDI/IC mismatch], [3], []


Symptoms:

Trying to convert standby to clone instance.

Cause:

Controlfile was created for standby and same controlfile is used during rename.

Fix:

Take a trace from the database.

Rename existing controlfiles.

Create fresh controlfiles from the trace.

Open the database with resetlogs.