Dbms_stats Slow after Upgrade To 11gr1

(Doc ID 1127575.1)

Last updated on MARCH 27, 2014

Applies to:

Oracle Server - Enterprise Edition - Version: 11.1.0.6 and later   [Release: 11.1 and later ]
Information in this document applies to any platform.

Symptoms

On 11.1.0.6 production database collecting statistics using

SYS.DBMS_STATS.GATHER_table_STATS
(ownname => thisowner, tabname=> agg.table_name, estimate_percent => 15,
method_opt=> 'FOR ALL INDEXED COLUMNS', degree=> 6, cascade => TRUE,
granularity => 'ALL', no_invalidate => true);

it is running for a long time.

Cause

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