Today I faced the issue that a new ASM Disk Group created in instance +ASM1 is not getting automatically mounted in instance +ASM2. The first step was to check DB dependencies: [oracle@ol5-112-rac2 trace]$ srvctl config database -d RAC Database unique name: RAC Database name: RAC Oracle home: /u01/app/oracle/product/11.2.0/db_1 Oracle user: oracle Spfile: +DATA/RAC/spfileRAC.ora Domain: localdomain … Continue reading Why my new Disk Group is not getting mounted automatically when ASM instance starts?