How to Reconfigure Oracle HAS (High Availability Services) after changing hostname?
Issue:
[grid@newhost ~]$ crsctl check has
CRS-4639: Could not contact High Availability Services
CRS-4000: Command Start failed, or completed with errors.
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Command for Verify Entire Grid Infrastructure Installation:
To identify the mappings between the intefaces, IP addresses, and subnets, run the following command:
cluvfy comp nodecon -n all
Verifying node connectivity
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Oracle 11.2.0.3 Grid Infrastructure ora.diskmon shows OFFLINE:
$GRID_HOME/bin/crsctl stat res ora.diskmon -init
NAME=ora.diskmon
TYPE=ora.diskmon.type
TARGET=OFFLINE
STATE=OFFLINE
Reason:
ora.diskmon is not used in non-Exadata environment, so the OFFLINE state is normal and by default.
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Re-Installation of Oracle 11g Grid Infrastructure encountered:
you do not have sufficient permissions to access the inventory '/home/oracle/oraInventory'
Solution:
cat /etc/oraInst.loc
rm /etc/oraInst.loc
cat /etc/oratab
rm /etc/oratab
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