Oracle RAC ASM and ASMLib

This section describes how to install and configure CipherTrust Transparent Encryption on an Oracle RAC ASM and ASMLib.

Using CipherTrust Transparent Encryption with an Oracle RAC ASM

You can apply CipherTrust Transparent Encryption when the Oracle DB is active or inactive. If you choose to use it while the Oracle DB is active, it eliminates any downtime. You can apply CipherTrust Transparent Encryption during low volume traffic time frames. If you choose to use this option, then use the rebalance function of ASM. This allows you to:

1. Migrate data off of a disk so that it can be dropped/removed from a Diskgroup.

2. Apply CipherTrust Transparent Encryption protection.

3. Add the disk back into the diskgroup.

   You must drop the related ASM diskgroup first, before dropping the disk. If, for example, you drop an ASM disk before dropping an ASM diskgroup, and then add it back to the diskgroup without cleanly wiping the disk, the ASM diskname will be corrupted. To avoid this problem, clear out the disk before you add it back into the diskgroup. Example: dd if=/dev/zero of=/dev/secvm/dev/mapper/asmdg-asmlv002 bs=32k

ASMLib

ASMLib is an optional support library for the Automatic Storage Management feature of the Oracle Database. If the customer is using ASMLib, then management is performed through an Oracle ASM command line. Using this can be simpler than the setup required for standard ASM. The commands and details of the procedure differ as well.