Is everything OK with your disk? If the process is waiting for the RDBMS to read an index block, you might have a problem with your HW (controllers, software, device being touched by an angel....). Did you take a look into the system log? The "dmesg" command should tell you if everything is OK. On 03/31/2004 01:01:04 PM, Stefan Jahnke wrote: > Hi Mladen > > It's actually always the same SEQ# and the session is continously waiting > for the same block. It plain hangs. -- Mladen Gogala Oracle DBA ---------------------------------------------------------------- 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 -----------------------------------------------------------------