Cube Refresh Performance Issue
892844Mar 11 2013 — edited Apr 5 2013We are facing a strange performance issue related to cube refresh. The cube which used to take 1 hr to refresh is taking around 3.5 to 4 hr without any change in the environment. Also, the data that it processes is almost the same before and now. Only these cube out of all the other cubes in the workspace is suffering the performance issue over a period of time.
Details of the cube:
This cube has 7 dimensions and 11 measures (mix of sum and avg as aggregation algorithm). No compression. Cube is partioned (48 partitions). Main source of the data is a materialized view which is partitioned in the same way as the cube.
Data Volume: 2480261 records in the source to be processed daily (almost evenly distributed across the partition)
Cube is refreshed with the below script
DBMS_CUBE.BUILD(<<cube_name>>,'SS',true,5,false,true,false);
Has anyone faced similar issue? Please can advise on what might be the cause for the performance degradation.
Environment - Oracle Database 11g Enterprise Edition Release 11.2.0.3.0
AWM - awm11.2.0.2.0A