Datapump Export (Expdp) Hangs if the Table is Locked by the Application

(Doc ID 1615021.1)

Last updated on FEBRUARY 12, 2014

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 and later
Information in this document applies to any platform.

Symptoms

1. Datapump locks the tables being exported.

2. If a table is locked by an application when expdp is initiated then expdp hangs until the application releases the lock.

3. When there are multiple tables locked by an application and expdp runs with full=y and parallel=100 then these table locks can quickly escalate to a database hang.

Use the below query to check the locking session

Cause

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