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# VPD With Oracle Database Proxy Authentication

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If you are using Oracle Database proxy authentication ("Oracle Database Proxy Authentication"), you must implement a session event handler for the following session events:

- `noRowsModifiedSessionEvent` (see "NoRowsModifiedSessionEvent Event Handler")

By using Oracle Database proxy authentication, you can set up VPD support entirely in the database. That is, rather than making the isolated client session execute SQL (see "PostAcquireExclusiveConnection Event Handler" and "PreReleaseExclusiveConnection Event Handler"), the database performs the required setup in an after login trigger using the proxy `session_user`.