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Addressing Oracle Redo Latency with Ultra Disk

DBAKevlar's avatar
DBAKevlar
Icon for Microsoft rankMicrosoft
Aug 31, 2022
An enterprise cloud, like Azure, handles an incredible variety of workloads and to be successful running Oracle in Azure means you need to know what you’re doing and where the sweet spot is for a rel...
Published Aug 31, 2022
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Evgeny_Puzikov's avatar
Evgeny_Puzikov
Copper Contributor
Sep 11, 2022

>If you only have a Log File Sync issue, then a single ultra disk and moving the redo logs to this new disk can address this problem.

 

Well, log file sync is not directly related to slow IO. It could have big values because of high CPU utilization or long waiting for remote redo write to standby in sync configuration.

Increasing redo disk performance decreases log file parallel write event only. Log file sync will decrease because "log file parallel write" is type of nested wait event for log file sync.