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: RMAN Messages

Recovery Manager Messages - For more information about the Recovery Manager,

The specific error code:

Chosen lang:

ORACLE - Version 9g release 2

RMAN-20021database not set
Cause: Contact Oracle Support Services.
Action: This an internal error.