NMDA: Oracle backups fail with internal error code ORA-00600

NetWorker Module for Databases and Applications (NMDA) Oracle database backup fails:

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
ORA-00603: ORACLE server session terminated by fatal error
ORA-00600: internal error code, arguments: [ipc_recreate_que_2], [1], [0]

The client configuration wizard for the Oracle client was not running due to missing environment variable on the oracle client.

The missing environment variable is LD_LIBRARY_PATH. This variable is required by NMDA agent, it is expected to be available even if it is not used by Oracle.
"LD_LIBRARY_PATH=${NSR_LIBS}:/lib:/usr/lib:$LD_LIBRARY_PATH" can be found in NetWorker startup file /opt/nsr/admin/networkerrc.

1. On the Oracle client, open /opt/nsr/admin/networkerrc in a text editor.
2. Modify the path of LD_LIBRARY_PATH=${NSR_LIBS}:/lib:/usr/lib:$LD_LIBRARY_PATH to LD_LIBRARY_PATH=${NSR_LIBS}:$ORACLE_HOME/lib:/lib:/usr/lib:$LD_LIBRARY_PATH.
3. Save the changes and restart NetWorker services on the client.