Thanks for the idea Tim but I am thinking about adding hints to the sql or changing the FROM table.
Yechiel Adar Mehish ----- Original Message ----- To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> Sent: Thursday, May 02, 2002 4:48 PM > The Virtual Private Database (VPD) facility (a.k.a. "fine-grain" or > "row-level" security) can be used to alter SQL on the server, regardless of > origin. I implemented an access control list (ACL) feature for a system two > years ago, complete with recursion inside PL/SQL for navigating the > (implied) double-dimensioned linked-lists that typical ACL functionality > requires. > > Navigating linked-lists is naturally something that you wouldn't want to > code in a SQL statement, but VPDs did it quite nicely by allowing me to run > a custom PL/SQL packaged function during the PARSE phase of a SQL statement. > The packaged function is supposed to return a string which is tacked onto > the SQL statement, so you cannot "modify" existing text in the SQL, but you > can add additional SQL text to the WHERE clause, including subqueries. > There are other little useful twists and tricks and gotchas involved, but > that's the general idea... > > But, be *very* careful! You can just imagine how badly you can harm > performance and accessibility through casual use of this feature... :-) > > ----- Original Message ----- > To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> > Sent: Thursday, May 02, 2002 7:18 AM > > > > Hello list > > > > This time I need your help on how to implement a weird idea. > > We have a third party application that fire wasteful SQL's to the > database. > > (Remember the discussion on using x$dual Vs dual some days ago?) > > > > I am wondering: Is there a way to change the SQL that the user send? > > > > In ADABAS on the mainframe I can activate a user exit that gets the > command > > that > > the user send to the database and change it (Not only can, but we are > doing > > it!). > > > > Is there a way to do the same with SQL in Oracle? > > > > In the server (preferably) or in the client. > > > > Thanks > > > > Yechiel Adar > > Mehish > > > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > -- > > Author: Yechiel Adar > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > > San Diego, California -- Public Internet access / Mailing Lists > > -------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB ORACLE-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like subscribing). > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Tim Gorman > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Yechiel Adar INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
