Oracle Solution for Error ora-31504
ORA-31504: cannot alter or drop predefined change source
What triggered the Error:
The caller attempted to alter or drop one of the predefined change sources HOTLOG_SOURCE or SYNC_SOURCE.What should we do to fix it:
Do not attempt to alter or drop a predefined change source or correct call to supply the name of a user-created change source.
If this was not sufficient go over to:
Oracle Official Support Knowledge Center
Or maybe those geeks at: StackOverflow Board
Or maybe those geeks at: StackOverflow Board
