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Note: All the posts are based on practical approach avoiding lengthy theory. All have been tested on some development servers. Please don’t test any post on production servers until you are sure.

Tuesday, August 19, 2014

Exadata: Restoring OCR and Vote Disks

Oracle allows you to restore your Oracle Cluster Registry using the ocrconfig –restore command. This command accepts a backup OCR file as its argument, which you can choose by running ocrconfig –showbackup and selecting the appropriate backup copy that resides on your compute node file system.

Monday, August 04, 2014

Getting Flash Storage info

Exadata flash storage is provided by Sun Flash Accelerator F20 PCI flash cards. Each PCI flash card has a device partitioned per FDom, yielding 16 flash devices. These flash devices are manifested as ExadataStorage Server flash disks and used for Smart Flash Cache and Smart Flash Logging.

Getting Disk Storage Details on the Exadata Storage Servers

If you want to know how storage is allocated, presented, and used in the Exadata storage cell, use below commands to get the related information.

Getting Storage Server Architecture Details

Exadata Storage Servers are self-contained storage platforms that house disk storage for an Exadata Database Machine and run Oracle’s Cell Services (cellsrv) software. A single storage server is also commonly referred to as a cell.