Upgrading database hardware in an organization is always a cumbersome process. The most time consuming step is, planing for the upgrade, which mainly includes choosing right hardware for your Oracle databases. After deciding on the hardware type for your databases, rest will be taken care by technical teams involved. I will be discussing, how I…
I was contacted by Dev team to look into Development database where Oracle queue size kept on increasing. As per them messages were not getting cleared.They were running count on Queue table and the count kept increasing. To find out exact cause I included the msg_state in the query and found out that there were…
This one is a nasty bug 🙂 I was trying to setup Oracle PDB in a test environment for the first time and got stuck with ORA-01035 error [[email protected] ~]$ sqlplus hr/[email protected]//oracle11g:1522/engg SQL*Plus: Release 12.1.0.2.0 Production on Fri Jul 3 07:34:58 2015 Copyright (c) 1982, 2014, Oracle. All rights reserved. ERROR: ORA-01035: ORACLE only available to users…
While trying to run pre_upgrade_status.sql script for DB upgrade (10.2.0.4 to 11.2.0.4), we got following error @pre_upgrade_status.sql ERROR at line 1: ORA-01873: the leading precision of the interval is too small ORA-06512: at line 8 On debugging further , found out that it was due to limit imposed on “INTERVAL DAY TO SECOND” datatype. By…
Recently we came across a issue where our DB crashed with ORA-00338 error . Errors in file /oracle/diag/rdbms/orcl11g/orc11g/trace/orc11g_lgwr_24118.trc: ORA-00338: log 2 of thread 1 is more recent than control file ORA-00312: online log 2 thread 1: ‘/oracle/oradata/orcl11g/redo02.log’ LGWR (ospid: 24118): terminating the instance due to error 338 DB couldn’t be restarted as it gave same errors…
MGMTDB is new database instance which is used for storing Cluster Health Monitor (CHM) data. In 11g this was being stored in berkley database but starting Oracle database 12c it is configured as Oracle Database Instance. In 11g, .bdb files were stored in $GRID_HOME/crf/db/hostname and used to take up lot of space (>100G) due to bug…