Just a guess here - Some versions of 9 used to default the resource manager plan to "system_plan" or something like that, so you had resource manager enabled by default even if you didn't want it. hth Connor -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Hameed, Amir Subject: "resmgr:method mem alloc latch" latch Folks, I was seeing a session waiting on the following latch in our QA database (9.2.0.6). I could not find anything on this latch. Does anyone know what this latch does and under what circumstances this latch is waited on? Thanks Amir -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l