Anyone working with Exadata, probably have already used dcli (Distributed Command Line Utility) for their day to day administrative tasks. The dcli utility let you execute administrative commands on multiple Exadata nodes (Both Compute/Storage) simultaneously. You can use dcli command for various administrative and monitoring tasks from changing password to query storage cells. The dcli utility requires user equivalency being setup between all the target nodes and group file (a text file containing a list of target compute & Storage Nodes to which commands are sent). For this blog, I am going to use dcli utility to install latest OPatch utility on my two node Exadata machine.
- Checking User user-equivalence between all the target nodes, in my case I only have two compute nodes.
dcli -g dbs_group -l oracle 'hostname -i'
- If you don’t have group file containing all the Database/Compute nodes, you can create one using vi text editor.
- You can download latest OPatch utility from Oracle Metalink, you will need Oracle support ID for this download.
- Copy zip file to all the compute nodes, in my case there are only two nodes.
scp p6880880_112000_Linux-x86-64.zip \ oracle@NODE2:/u01/app/oracle/product/software/
- You can also use dcli utility to Check existing OPatch Version on all target nodes.
dcli -l oracle -g dbs_group /u01/app/oracle/product/126.96.36.199/dbhome_1/OPatch/opatch version
- Unzip latest OPatch utility to all compute nodes using dcli
dcli -l oracle -g dbs_group unzip -oq -d \ /u01/app/oracle/product/188.8.131.52/dbhome_1 \ /u01/app/oracle/product/software/p6880880_112000_Linux-x86-64.zip
- Check existing OPatch Version again to verify if latest OPatch utility has been installed on all compute nodes.
dcli -l oracle -g dbs_group \ /u01/app/oracle/product/184.108.40.206/dbhome_1/OPatch/opatch version