Slow Performance of purge_instances_oracle.sql when Purging BPEL Dehydration Store
(Doc ID 555970.1)
Last updated on MARCH 02, 2019
Applies to:Oracle(R) BPEL Process Manager 10g - Version 10.1.3.3 and later
Information in this document applies to any platform.
***Checked for relevance on 15-Dec-2009***
***Checked for relevance on 16-May-2011***
The purge_instances_oracle.sql procedure executes for an unreasonably long time as reported in <Bug 6806290> and <Bug 6727429>. (Even with the optimization in <Bug 6501312> applied.)
A SQL trace of the purge might appear to be stuck on the following DELETE but an analysis of the trace file should reveal that the script is in a slow CURSOR FOR-LOOP:
DELETE FROM document_dlv_msg_ref
WHERE message_guid = r_invoke_message.message_guid;
Or the purge might appear to be stuck on the following DELETE which is its own bottleneck:
DELETE FROM xml_document
WHERE dockey NOT IN
(SELECT dlv_ref.dockey FROM document_dlv_msg_ref dlv_ref
SELECT doc_ref.dockey FROM document_ci_ref doc_ref );
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In this Document
|Example Purge Script Setup/Execution|
|Reporting Purge Performance Problem to Oracle Support|