E20-526 Question #20: Real Exam Question with Answer & Explanation

The correct answer is D. Volume was not unmounted on the host. The workflow for refreshing XtremIO Snapshots, containing Oracle Database files, consists of the following five simple steps: 1. Shut down the database instances with files in the target Snapshot Set. 2. Dismount the ASM disk group (or file systems) involved. 3. Refresh the Snaps

Question

An administrator receives an error on an XtremIO array while performing snapshot refreshes to a production volume. What is a potential cause for this issue?

Options

ARefresh of the production volume is not supported
BVolume was not unmapped on the XtremIO cluster
COnly snapshot-to-snapshot refresh is supported
DVolume was not unmounted on the host

Explanation

The workflow for refreshing XtremIO Snapshots, containing Oracle Database files, consists of the following five simple steps: 1. Shut down the database instances with files in the target Snapshot Set. 2. Dismount the ASM disk group (or file systems) involved. 3. Refresh the Snapshot via XtremIO GUI (or CLI or RESTful API). 4. Mount the ASM disk groups (or file system) involved. 5. Start the database instances. This entire workflow is measured in seconds (not minutes). Incorrect Answers: A: The refresh command is a powerful tool for test and development environments and for the offline processing use case. With a single command, a snapshot of the production volume or CG is taken and the SCSI face of the volume, which was mapped to the test and development application, is moved to it. This allows the test and development application to work on current data without the need to copy data or to rescan. oracle-databases.pdf, page 8

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