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Pin objects in Shared Pool

Frequently used procedures can (and generally should) be pinned in the shared pool.

Why: Frequently loading and reloading stored procedures, packages, and triggers into the shared pool is a relatively expensive operation for the server. By pinning packages in the shared pool, the amount of CPU used to reload packages will be minimized.

How to do it: To pin a package in the shared pool use the following command:
execute dbms_shared_pool.keep('SCHEMA.PACKAGE','P')

Note: Create a startup trigger to pin these packages whenever the database starts up.

 

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