The following shows the overall process to create a database copy using a thin clone.
- Prepare the destination host to receive the LUNs.
- Configure the operating system similarly as the original host.
- Install the same version of Oracle software on the destination host.
- Install the same storage software (ASMLib, ASMFD) on the destination host.
- In Unisphere, identify and select the LUN or the consistency group.
- Choose Clone from the More Actions drop-down menu.
- Select a snapshot to clone from.
Note: Only snapshots with no auto-delete policy and no expiration time are eligible for selection. Remove the auto-delete policy and expiration time on the snapshot before attempting the Clone action.
- Follow the wizard to configure the thin clone’s name, host I/O Limit, host access, snapshot policy, and replication.
- After the thin clone LUNs are attached to the destination host, scan for the LUNs using rescan-scsi-bus.sh -forcerescan or –a.
- If the database clone is intended for long-term use, configure multipath and persistent ownership and permission on the thin clone LUNs.
- Scan for ASM devices.
- Mount the ASM disk groups.
- Copy the database init parameter file to the destination host.
- Create the database log directories on the destination host.
- Start up the database in SQL*Plus.