Thanks Rick I was not able to do any testing and was intrigued by the fact that the comments were removed So I guess and as your review shows the "comments" for hints are not really treated as comments :) Regards -----Original Message----- From: Ric Van Dyke [mailto:ric.van.dyke@xxxxxxxxxx] Sent: Monday, February 24, 2014 9:52 AM To: Pande, Rajendra; Oracle-L@xxxxxxxxxxxxx Subject: RE: ORACLE Statements in a PLSQL Block OK I blogged on it too. See the full test here: http://ricramblings.blogspot.com/2014/02/plsql-and-formating-of-sql-text .html -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of rajendra.pande@xxxxxxx Sent: Monday, February 24, 2014 9:12 AM To: Oracle-L@xxxxxxxxxxxxx Subject: ORACLE Statements in a PLSQL Block Came across this MOS note How to Determine the SQL_ID of a SQL Statement in a PL/SQL Block (Doc ID 741724.1) As part of the note it goes on to say that "The SQL statement within the PL/SQL block is actually stored separately, but you cannot see it because: * every sql statement in a PL/SQL block is stored as capital letters * every comment and INTO clause are removed If that is the case does it not have implications for the optimizer related to performance and statement tuning. .. Given that all hints are also removed Wondering if someone has done some research and blogging on this topic Regards Please visit our website at http://financialservicesinc.ubs.com/wealth/E-maildisclaimer.html for important disclosures and information about our e-mail policies. For your protection, please do not transmit orders or instructions by e-mail or include account numbers, Social Security numbers, credit card numbers, passwords, or other personal information. -- //www.freelists.org/webpage/oracle-l Please visit our website at http://financialservicesinc.ubs.com/wealth/E-maildisclaimer.html for important disclosures and information about our e-mail policies. For your protection, please do not transmit orders or instructions by e-mail or include account numbers, Social Security numbers, credit card numbers, passwords, or other personal information. -- //www.freelists.org/webpage/oracle-l