Oracle Error Message
ORA-15503: cannot startup instance when procedures in “DBMS_WORKLOAD_CAPTURE” or “DBMS_WORKLOAD_REPLAY” are in the middle of their execution
Reason for the Error
The new instance could not be started because the database was executing a procedure in either the DBMS_WORKLOAD_CAPTURE or DBMS_WORKLOAD_REPLAY package.
Solution
Start the new instance after such procedures in the given packages have finished execution.