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OSM Purge Partition Online Take Long Time (Doc ID 1663578.1)

Last updated on MARCH 20, 2023

Applies to:

Oracle Communications Order and Service Management - Version 7.2.0 and later
Information in this document applies to any platform.
*****Currency checked on 13 Oct 2017 *****


During purge partition, Customer experienced that it was taking very long time during swap partition step (1 hour++). The partition size is 300,000. Below are steps which we use to purge partition.

Note that we stopped at step#2 because it took too long.

1. om_part_maintain.setup_xchg_tables(2);
2. om_part_maintain.purge_partitions(
  a_online => true,
  a_delete_before => sysdate + 1,
  a_order_states => om_new_purge_pkg.v_all_orders,
  a_order_id_ge => null,
  a_order_id_lt => 300001,
  a_drop_empty_ptns => false);

3. om_part_maintain.drop_empty_partitions(1,300001);
4. om_part_maintain.purge_xchg_prg_tables;

During step#2, we observed that below statement was iteratively going through every single partition even though table is empty. OSM has a lot of sub partitions across many tables. This is suspected to be causing the slowness. Is there anything we can do to improve the time taken for purging partition process?




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