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Hidden parameters use

in Database Administration (MOSC) 3 commentsAnswered ✓

What is the use of the below hidden parameter:

_bct_public_dba_buffer_size
_optimizer_aggr_groupby_elim

and the Need to understand how to overcome the below prerequisite in Pre-Upgrade:

pre-requisite

  1. uniaud_records_in_file NO Unexpected failure. Manual fixup required. FIXUP reports success, but a RECHECK indicated the problem still exists.

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