Have a look at Metalink under note 122567.1 -- Note titled "Poor Performance in Query on DBA_WAITERS" There is an update to catblock.sql that improves the performance. HTH, Bruce Reardon NOTICE: This e-mail and any attachments are private and confidential and may contain legally privileged information. If you are not an authorised recipient, the copying or distribution of this e-mail and any attachments is prohibited and you must not read, print or act in reliance on this e-mail or attachments. This notice should not be removed. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of M Rafiq Sent: Monday, 1 March 2004 8:13 AM Subject: RE: select * from DBA_BLOCKERS is haging forever; V 8.1.7.3; Sun OS You have to run $ORACLE_HOME/rdbms/admin/catblock.ora of your latest version of Oracle 8.1.7.x. It is a known issue. I opened a tar 4/5 months back for same issue and they told me this solution and it worked. Right now you have to kill this hanging session. Regards Rafiq -------------------------- From: Jay <jaysingh1@xxxxxxxxxxxxx> Reply-To: oracle-l@xxxxxxxxxxxxx Date: Sun, 29 Feb 2004 15:07:19 -0500 Dear All, Any idea why "select * from DBA_BLOCKERS;" is haging forever. Thanks Jay ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------