Database Performance Issues - Full Table Scan join of table dlv_message and document_dlv_msg_ref

(Doc ID 1370830.1)

Last updated on OCTOBER 25, 2016

Applies to:

Oracle(R) BPEL Process Manager - Version and later
Information in this document applies to any platform.
***Checked for relevance on 22-August-2013***


With MLR 2 you are experiencing considerable performance issues with the BPEL hydration database. Your DBAs are continuing to monitor the BPEL hydration database, and have reported the following SQL statement consuming the majority of system resources when executing:

/*+ INDEX ( dm dm_conversation ) INDEX ( ddmr doc_dlv_msg_ref_pk ) */
dm.conv_id ,
dm.conv_type ,
dm.message_guid ,
dm.domain_ref ,
dm.process_id ,
dm.revision_tag ,
dm.operation_name ,
dm.receive_date ,
dm.state ,
dm.res_subscriber , ,
dm.headers_ref_id ,
ddmr.dockey ,
ddmr.message_guid ,
ddmr.part_name ,
ddmr.domain_ref ,
FROM dlv_message dm,
document_dlv_msg_ref ddmr
WHERE dm.conv_id = :1
AND dm.domain_ref = :2
AND dm.state = 0
AND ddmr.message_type = 0
AND dm.message_guid = ddmr.message_guid
ORDER BY dm.message_guid


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