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Hidden Parameters . [message #65906]

Thu, 27 January 2005 13:52

Narayan Venkat
Messages: 2
Registered: January 2005

Junior Member

I just want to check with some Oracle Experts, the following 4 hidden parameters are applicable to Oracle 8i CBO?

optimizer_mode = first_rows_10;
hash_join_enabled = false;
"_optimizer_sortmerge_join_enabled" = false;
"_optimizer_join_sel_sanity_check" = true;

Any help

- Narayan

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Re: Hidden Parameters . [message #65907 is a reply to message #65906]

Thu, 27 January 2005 21:23

Frank
Messages: 7901
Registered: March 2000

Senior Member

Don't use undocumented parameters at will. See here

hth

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