v$session.row_wait_obj# tells you the object you're waiting against most of the time (it also tells you file#,row# and block# so you can determine what specific row you're stuck against as well). It's not always have the information in which case looking at the current sql of a blocked session usually enough, also remember that both sessions will be holding TM locks against respective tables where ID1 is object_id of the table (that is, of course, unless somebody disabled table locks). On Tue, Jul 3, 2012 at 2:31 PM, Dba DBA <oracledbaquestions@xxxxxxxxx> wrote: >summary: figure out which table your blocked sessions sql is blocking on. > > so now you know which table is being blocked. > -- Alex Fatkulin, http://afatkulin.blogspot.com Enkitec, http://www.enkitec.com -- //www.freelists.org/webpage/oracle-l