Performing a Rolling Upgrade with a Logical Standby Database

You can use a logical standby database to perform a rolling upgrade of Oracle Database. To incur minimal downtime on the primary database, you can run different releases of Oracle Database on the primary and logical standby databases while you upgrade your databases, one at a time. Oracle Text takes full advantage of upgrading Oracle Text indexes.

All CTX PL/SQL procedures are fully replicated to the standby database and are upgraded, except with certain limitations for these procedures:

• CTX_DDL PL/SQL Procedures

• CTX_OUTPUT PL/SQL Procedures

• CTX_DOC PL/SQL Procedures

See Also: Oracle Data Guard Concepts and Administration for information on creating a logical standby database to perform rolling upgrades