Infrastructure at your Service
By Franck Pachot . Je viens d’assister au Webinar Zero Downtime Migration pour Oracle, prĂ©sentĂ© par Chris Lawless qui est rĂ©cemment passĂ© de Product Manager Golden Gate Ă Product Manager Dbvisit. Je vais dĂ©tailler ici un point trĂšs important Ă©voquĂ© par Chris Lawless. La migration par rĂ©plication n’est pas seulement envisagĂ©e pour Ă©viter un arrĂȘt de service. ArrĂȘt nĂ©cĂ©ssaire lors de la migration proprement dite (qui peut aller de quelques minutes Ă plusieurs heures en…
By Franck Pachot . sqlplus / as sysdba oradebug setmypid oradebug unlimit oradebug hanganalyze 3 oradebug dump ashdumpseconds 30 oradebug dump systemstate 266 oradebug tracefile_name Your Oracle database – production DB, of course – is hanging. All users are blocked. You quickly check the obvious suspects (archivelog destination full, system swapping, etc.) but it’s something else. Even you, the Oracle DBA, cannot do anything: any select is hanging. And maybe you’re even not able to…
By Franck Pachot . Do you use ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY for your Oracle databases in Data Guard? Maybe you also use the Fast Recovery Area as archive log destination. That’s good practice! But did you ever check that it works as expected? What I mean is this: The archived logs that you don’t need are reclaimable by the FRA when space is needed And the archived logs that are required…
By Franck Pachot . Because people know that I really like Oracle AWR reports, they send them to me from time to time. Here is one I have received for Christmas with the following question: ‘Since our AIX server is virtualized, the response times are 4x longer. I feel that we are CPU bound, but cpu usage is mostly idle. Is there something hidden?’ It is a question that is frequently raised with virtualized environments….
