Cleaning up a failed Oracle 11g grid infrastructure install.

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Unfortunately, the installer or more specifically the root.sh script for the Oracle 11g grid (Clusterware) installer can be very flaky.

 

If it fails and you need to fix something or rerun it for any reason, it will fail the next time if you have not cleaned up the install by de-configuring CRS. I also like to wipe the installation off altogether and restart from a clean base. Here are the steps.

/u01/app/11.2.0/grid/crs/install/rootcrs.pl -deconfig -verbose -force

/u01/app/11.2.0/grid/crs/install/rootcrs.pl -deconfig -verbose -force -lastnode

At this point, you could rerun root.sh (after you have fixed the problem, but if you have closed the installer or just want to restart from a clean base then continue with the steps below.

 

Get the oracle home from the inventory then delete them both

 cat /etc/oraInst.loc

cd /u01/app/oraInventory/ContentsXML/

cat inventory.xml

Find the Oracle home

Remove it on all nodes

 rm -R /u01/app/11.2.0/

Also remove the inventory

rm -R /u01/app/oraInventory/

rm -R /etc/oracle

rm /etc/oraInst.loc

rm /etc/oratab

rm /usr/local/bin/dbhome

rm /usr/local/bin/oraenv

rm /usr/local/bin/coraenv

Then change the ownership of the /u01/app directory:

chown oracle:dba /u01/app

 

You could stop there but if you really want to wipe the slate, you could delete your ASM disks  and recreate them fresh before the next install.

 

Delete your ASM disks on node 1

 oracleasm deletedisk DISK1

oracleasm deletedisk DISK2

oracleasm deletedisk DISK3

oracleasm deletedisk DISK4

.

.

.

 

On all nodes

oracleasm scandisks

/usr/sbin/oracleasm exit

 

Now give your node a reboot and you should have a clean base from which to start another install.

 

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