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ALTER TABLE ENABLE CONSTRAINT FK is very slow

796605Oct 4 2012 — edited Oct 4 2012
Hello,

The following enable constraint command takes around (15min to be completed)
ALTER TABLE table_name ENABLE CONSTRAINT fk_constraint_name ;
table_name: (~133 Millions rows)

Any idea why it takes long to be completed? and what could be done to improve the performance?

Thanks in advance
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Locked on Nov 1 2012
Added on Oct 4 2012
#performance, #tuning
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