Oracle Solution for Error ora-06516

ORA-06516: PL/SQL: the Probe packages do not exist or are invalid

What triggered the Error:

A Probe operation, probably an attempt to initialize the ORACLE server to debug PL/SQL, could not be completed because the Probe packages were not loaded or have become invalid.

What should we do to fix it:

DBA should load the Probe packages. This can be done by running the pbload.sql script supplied with the RDBMS.