Unmounting asmlib driver filesystem failed

Let's see the discovering result. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. ASM Installation and Upgrade. Leave a Reply Cancel reply Your email address will not be published. Previously this would have involved reading many different support documents then collecting output from many different tasks and gathering lots of different diagnostics.

When you have identified a problem and you need more information, use the tfactl command to perform further analysis against the database.

Skip to content. Commit Wait Event Whenever you encounter commit wait event, its only due to log file sync. This means there are less commits occurring in your database.

SHould not be more than 10 ms. This was due to log file sync. Hence, log file sync due to CPU consumption is ruled out. Top Foreground wait event has db file sequential read with avg wait 43 ms. Background wait event has log file parallel write as only 1 ms. This means there are no issues with log writer writing to the disks.

However, the logfilesequentail read is having ms indicating read delay in disks and hence indicating towards SAN latency. Hence, frequent commits at the database layer is not an issue either.

Checking the latency we came to know that there was a delay of around ms at the SAN layer and hence SAN is the culprit for the slowness. Conclusion : There was an issue with respect to SAN. Posted in Uncategorized. Bounce the database In a RAC database, proceed with a rolling bounce.

This action eliminates accidental overwrites of Oracle ASM disks that would cause corruption in the disks and files within the disk group. If migration was successful and disks are missing after the you rebooted the host, seek help of system guys to check why disks are missing.

Starting As root user, get list of all current disks being used by ASM. Reloading disk partitions: done. Cleaning any stale ASM disks Scanning system for ASM disks As grid user, execute following set of commands. For RAC, perform this on all nodes.

Copyright c , , Oracle. All rights reserved. Enter user-name: sys as sysasm. Enter password:. Connected to:. Adding to inittab Startup will be queued to init within 90 seconds. Checking the status of new Oracle init process Expecting the CRS daemons to be up within seconds. CSS is active on these nodes. Once the disk is created, run the 'oracleasm scandisks' command to correct the oracleasm disk permissions. For example:.

I used to consider that an unusable index may cause DML changes fail. In fact, only the index related to a constra Installing ASMLib. This document describes the steps required to install the Linux specific ASM library and its assocated driver. The steps below are steps that the system administrator must follow. Go to ASMLib download page and follow the link for your platform.