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2009-12-15

Slow Oracle RMAN in 10.2.0.3.0

In Oracle Database 10.2.0.3.0 repository catalog, RMAN seems to run very slow when the repository catalog has thousands of entries in table RSR.

Oracle Metalink shown a bug, and resolution is to create an index

Bug 6476935 - RMAN Resyncs may take a long time to complete
Version affected : 10.2.0.3
Version fixed : 11.2
Affects : Catalog Schema
Workaround : create index rsr_i_stamp on rsr(rsr_sstamp, rsr_srecid);

Someone indicated that using "alter session set optimizer_mode=rule" will help, which I have not tried before

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