Exadata Storage Snapshots

My Oracle Notes

This post describes how to implement Oracle Database Snapshot Technology on Exadata Machine.

Because Exadata Storage Cell Smart Features, Storage Indexes, IORM and Network Resource Manager work at level of ASM Volume Manager only, (and they don’t work on top of ACFS Cluster File System), the implementation of the snapshot technology is different compared to any other non-Exadata environment.

At this purpuse Oracle has developed a new type of ASM Disk Group called SPARSE Disk Group. It uses ASM SPARSE Grid Disk based on Thin Provisioning to save the database snapshot copies and the associated metadata, and it supports non-CDB and PDB snapshot copy.

The implementation requires the following minimal software versions :

  • Exadata Storage Software version 12.1.2.1.0.
  • Oracle Database version 12.1.0.2 with bundle patch 5.
One major restriction applies to Exadata Storage Sanpshot compared to ACFS;
the source database must be a shared copy open on read only…

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Author: jee

Oracle Engineered Guy work for Oracle Corp. Techno-addict for Exadata, SuperCluster, ODA, RAC, ASM, HA.Fusion Music Enthusiast,Son,Husband,Father, Information-news- Freak, Optimist, Humanist. Interests : Technology, Innovation, Sharing interesting content. Views expressed on this account are my own and don't necessarily reflect the views of Oracle & its affiliates.