I had strange issue that with the following 2-Node 10g RAC on solaris 10 - 10g RAC clusterware - 10g ASM Home with listener.ora port 1536 - 10g RDBMS Home with Listener.ora port 1526 As per the Listener.log, asm Home was used before machine reboot. After reboot, listener was started with db home which has wrong port. So how come OCR started using db home instead of asm home or How i can check what is set in OCR Please help to understand TIA Sanjay