I got the 9.2 docs and this is in the Concepts manual:
"Dynamic Predicates
The function or package that implements the security policy you create
returns a predicate (a WHERE condition). This predicate controls access as
set out by the policy. Rewritten queries are fully optimized and shareable.
"
"Fully optimized and shareable" sure sounds like the queries are parsed
after the predicate is added.
I couldn't find any init parameter similar to what you mentioned.
Does anyone have a concrete reference regarding parsing of FGAC-modified
queries?
Thanks.
Jack C. Applewhite
Database Administrator
Austin Independent School District
Austin, Texas
512.414.9715 (wk)
512.935.5929 (pager)
[EMAIL PROTECTED]
Connor McDonald
<[EMAIL PROTECTED] To: Multiple recipients of list
ORACLE-L <[EMAIL PROTECTED]>
uk> cc:
Sent by: Subject: Re: Re: Row level security
and latch waits
[EMAIL PROTECTED]
.com
08/20/2003 10:21
AM
Please respond to
ORACLE-L
My understanding was that the rls predicate was added
at parse time (hence the importance of the contexts
and avoiding things like 'sysdate')
But also if I remember correctly, this behaviour was
changed in v9 to process the security function with
each execution (and hence probably increase the amount
of parsing going on).
You might want to have a play the the
"_dynamic_policies" parameter (or something like that)
which can be used to revert the 8i behaviour (which
should reduce parsing to a degree)
hth
connor
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