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How to monitor Data Pump sessions

Oracle Database Tips by Donald BurlesonMay 7, 2013

Question:  I need to be able to monitor my Data Pump sessions.  I see that there is a view dba_datapump_sessions, but I need a script to see how to use it.  Also, how do I monitor a long running data pump import or export job?

Answer:  Monitoring Oracle Data Pump is tricky, especially after the rows are added and Oracle is busy with indexes, constraints, and CBO statistics. At this stage, the Data Pump looks hung, but it's not stalled, it's working on metadata and metadata definitions. You can monitor an Oracle Data Pump expdp and impdp in several ways:

  • Monitor at the OS - Do a "ps -ef" on the data pump process and watch it consume CPU. You can also monitor the data pump log file with the "tail -f", command, watching the progress of the import in real time. If you watch the Data Pump log, be sure to include the feedback=1000 parameter to direct import to display a dot every 1,000 lines of inserts.

  • Monitor with the data pump views - The main view to monitor Data Pump jobs are dba_datapump_jobs and dba_datapump_sessions.

  • Monitor with longops - You can query the v$session_longops to see the progress of data pump, querying the sofar and totalwork columns.

You can monitor an import with these basic queries. For a full set of data pump import monitoring scripts see the Oracle script collection.

select
   sid,
   serial#
from
   v$session s,
   dba_datapump_sessions d
where
   s.saddr = d.saddr;

select
   sid,
   serial#,
   sofar,
   totalwork
from
   v$session_longops;



 
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