A relational database management system (DBMS) from Oracle, which runs on more than 80 platforms. Introduced in the late 1970s, Oracle was the first database product to run on a variety of platforms from micro to mainframe. Starting in 1999 with Version 8

The specific group: ORA Messages

Oracle Exception Messages

The specific error code:

Chosen lang:
ORA-00275media recovery has already been started
Cause:Complete or cancel the first media recovery session or start another session to perform media recovery.
Action:An attempt was made to start a second media recovery operation in the same session.