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REQUIRED_CHECKPOINT_SCN Not Advancing; Unsafe TXN Datapump Related (Doc ID 751493.1)

Last updated on FEBRUARY 25, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.1.0.7 [Release 11.1]
Oracle Database - Enterprise Edition - Version 10.2.0.2 to 10.2.0.4 [Release 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product.  Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.  

[1] required_checkpoint_scn is not moving forward.
A restart of the Capture process will therefore need to go
back further than desired. This may result in substantial
remining of data which is undesirable. 

additionally,

[2] the Capture process is slow to mine logs.

Related relevant patches applied :
- <bug 5770059> (fixed in 10.2.0.4) and, at the time of the issue the patch for
- bug 6154377.  This fix has subsequently been withdrawn and is superceded by :
<Bug 8267348> (fixed in : 10.2.0.4.1 PSU) ; i.e ensure that this later patch is applied.

Note: there may be merge patches containing the above

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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