How to enable RAC mode of a previously installed ORACLE_HOME
You installed Oracle, then you added your machine into a cluster and now you want your Oracle home to be able to create RAC databases.
You need to run the bellow code on each machine where you want to enable the RAC mode.
export ORACLE_HOME=/databases/ee/product/18x/dbhome_1 export PATH=$ORACLE_HOME/bin:$PATH cd $ORACLE_HOME/rdbms/lib make -f ins_rdbms.mk rac_on make -f ins_rdbms.mk ioracle
Then you can run
dbca and it will show the RAC option enabled.
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