My Oracle Support Banner

ORA-27091 and DB Corruptions When Using VxVM as ASM Disks in AIX Platform (Doc ID 1348119.1)

Last updated on JANUARY 24, 2020

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.1 to 11.2]
IBM AIX on POWER Systems (64-bit)
IBM AIX on POWER Systems (32-bit)


Customer had space issues. To fix the space issue, then clean up the diskgroup and ran diskgroup rebalance. Then there were some IO errors during the rebalance. After that, customer started getting DB corruption errors in DB alert log like the followings.

This DB block could not be recovered by regular block recovery method due to the IO errors.
When using dd command to dump the corrupted block, found the block was located at the very last block of an ASM disk and the block content was incomplete.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.