You can verify access to the database by running an SQL query.

Depending on the location of your $ORACLE_HOME, perform one of the procedures to start the database.

See Starting the database when your $ORACLE_HOME is on shared disks.

See Starting the database when your $ORACLE_HOME is on local disks.

For ASM, the $ORACLE_HOME is on local disks and the database is configured on ASM disk groups.

See Starting the ASM-managed database.

Upon completion, the Oracle database is started from the node in the cluster that you last performed this procedure.