ctxkbtc Limitations

The ctxkbtc program has the following limitations:

• When upgrading or downgrading your database to a different release, for theme indexing and related features to work correctly, Oracle recommends that you recompile your extended knowledge base in the new environment.

• Before extending the knowledge base, you must terminate all server processes that have invoked any knowledge base-related Text functions during their lifetime.

• There can be only one user extension for each language for each installation. Because a user extension affects all users at the installation, only the CTXSYS user can extend the knowledge base.

• In an Oracle RAC environment, the ORACLE_HOME can either be shared between multiple nodes, or each node can have its own ORACLE_HOME. The following requirements apply:

  • Before using any knowledge base-dependent functionality in any of the Oracle RAC nodes, ctxkbtc must be run in every ORACLE_HOME in the Oracle RAC environment.

  • When using ctxkbtc, the exact same input thesaurus content must be used in every ORACLE_HOME in the Oracle RAC environment.