Oracle Error ORA-25502: concurrent ALTER SYSTEM QUIESCE/UNQUIESCE command is running

Oracle Error Message

ORA-25502: concurrent ALTER SYSTEM QUIESCE/UNQUIESCE command is running

Reason for the Error

There is a concurrent ALTER SYSTEM QUIESCE RESTRICTED or ALTER SYSTEM UNQUIESCE command running in the system.

Solution

Contact the database administrator who is responsible for the concurrent command.