When you upgrade to a new release of Oracle Database, there may be issues relating to migrating your applications from earlier releases of Oracle Text. Where applicable, Oracle provides information about any needed migration steps to move Oracle Text applications into the new release.
This chapter contains the following sections:
Oracle Database Upgrade Guide for information on upgrading Oracle Database and topics about migrating applications
You can use a logical standby database to perform a rolling upgrade of Oracle Database. During a rolling upgrade, you can run different releases of Oracle Database on the primary and logical standby databases while you upgrade your databases, one at a time, incurring minimal downtime on the primary database. Oracle Text takes full advantage of upgrading Text indexes during a rolling upgrade.
All CTX PL/SQL procedures are fully replicated to the standby database and, therefore, are upgraded, except with certain limitations, as described, for these procedures:
Oracle Data Guard Concepts and Administration for information on creating a logical standby database to perform rolling upgrades
Oracle Database uses rowids internally for the construction of indexes. The following CTX_DDL procedures are not fully replicated to the standby:
CTX_OUTPUT.DISABLE_QUERY_STATS are replicated. This means that if Oracle Text logging is enabled on the primary database before running an operation that causes logging, then the operation will run with logging on the primary database, but will run without logging on the secondary database.
When the following
CTX_DOC procedures are used with Oracle Text Result Tables, the data stored in the tables is replicated. When these procedures are used without Result Tables, they are not replicated.
Oracle Data Guard Concepts and Administration for information on performing a rolling upgrade for minimal downtime on the primary database
To upgrade Oracle Text, use this procedure to identify and copy required files from your existing Oracle home to the new release Oracle home. Complete this task after you upgrade Oracle Database.
Certain Oracle Text features rely on files under the Oracle home that you have configured. After a manual upgrade to a new release, or after any other process that changes the Oracle home, you must identify and move these files manually. These files include any user filters, any mail filter configuration files, and all the knowledge base extension files. After you identify the files, copy the files from your existing Oracle home to the new Oracle home.
CTXSYSsystem privileges for the earlier release database.
$ORACLE_HOME/ctx/admin/ctx_oh.sqlunder the Oracle home of the earlier release database.
sqlplus / as sysdba connected SQL> @?/ctx/admin/ctx_oh_files
ctx_oh_files.sqlcommand, and copy those files to the new Oracle home.