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April 2nd, 2013 08:00
ASM/LE with Oracle
Hi,
We’re just testing on the HIT Kit for Linux 1.2 with ASM functionality. I’m reading that prior to taking the snapshot, ASM freezes the file system and then thaws it once the snapshot is complete, stating that the smart copies created are application consistent. Is this ASM/LE Oracle-aware meaning if the file system contains Oracle data files, does the ASM freeze action also quiesce I/O to Oracle? I’m aware that the ASM/ME is SQL Server-aware and quiesces that I/O. Or are we still responsible for scripting something in conjunction with ASM to quiesce Oracle I/O during the snapshot? If so, are there any example scripts of this available on the support site?
Thank you,
Ryan
sketchy00
203 Posts
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April 2nd, 2013 11:00
As a user of all of the solutions (LE, ME and VE) I would speculate that you would have to script something. The reason I say that is that application awareness from ASM/ME comes from the shared Volume Shadow Copy Services (VSS) framework in Windows; providing application awareness to all systems using VSS, and of which there is a VSS writer for. In the case of *nix, there is not a like framework to build around, unless there was some specific functionality built in LE 1.2 that I'm not aware of that would address this need.