It should not matter whether the database or listener is started up or shutdown first as the Database information is present in listener configuration. _____ From: ora-apps-dba-bounce@xxxxxxxxxxxxx [mailto:ora-apps-dba-bounce@xxxxxxxxxxxxx] On Behalf Of Atul Kumar Sent: Saturday, June 16, 2007 8:07 AM To: ora-apps-dba@xxxxxxxxxxxxx Subject: Re: Startup/Shutdown Application Services DB listener and database can be started in any order but recommended is stop first database and then listener similarly for startup first start listener then database . This is because PMON has to register database with listener (Though it can be done later as well if listener is started later) For more information check database listener documentation. For more on startup/shutdown in 11i check http://becomeappsdba.blogspot.com/2006/08/startup-shutdown-apps-services.htm l For R12 startup shutdown check http://becomeappsdba.blogspot.com/2007/06/start-up-shutdown-scripts-in-oracl e.html Atul http://teachMeOracle.com/forum (Forum for Apps DBA's) k srinivas <k.sridba@xxxxxxxxx> wrote: Hi All, I am bit confused...about Starting/Shutting the application services... The order of StartUP should be... First DB Listener, Database & then Application Tier Services... Is it Right..Or ...First Database,DB Listener and then Application Tier Services... Similarly For Shutdown.... First Application Tier Services then Database & DB Listener.. Or First Application Tier Services,DB Listener,then Database.. Could anybody highlight the reason for following the above steps,and wht happens if we mismatch the above.... Thanks Sreenivash... Atul Kumar Site Dedicated to Apps DBA's <http://teachmeoracle.com/> Forum Dedicated to Apps DBA's <http://teachmeoracle.com/forum> <http://www.feedburner.com/fb/a/emailverifySubmit?feedId=465233> Become Apps DBA