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Oracle DBMS_XA issue

edited Mar 16, 2016 5:01AM in PL/SQL (MOSC) 1 commentAnswered

Hi there,

We are running a RAC installation composed by 4 nodes.

Our version is 10.2.0.4.0.

One of the applications using the database is running Jboss and a service configured to use 3  nodes.

Runnig AWR stats, we discover the one of the most coslty statement is : BEGIN sys.dbms_xa.dist_txn_sync ; END;

What i cannot explain is why the abose call is made.

According to  Oracle doc, the call si made only if one of the isntances  fails :

DIST_TXN_SYNC Procedure

This procedure can be used to synchronize in-doubt transactions when one of the Oracle Real Application Clusters (RAC) instances fails.

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