ASM session hang waiting for PGA memory operation

(Doc ID 2288973.1)

Last updated on AUGUST 03, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.2.0.1 [Release 11.2 to 12.2]
Information in this document applies to any platform.

Symptoms


Queries to V$ASM_DISKGROUP & V$ASM_DISK were hanging 

ASM session hung waiting for "PGA memory operation" 

Issue started after creating ACFS volume

- ASM instance is started
- Hang while executing the below query

             --> select name, compatibility, database_compatibility from v$asm_diskgroup;


Session wait event:
1099 PGA memory operation ash8vj2xng1s1 ACTIVE WAITED SHORT TIME


Cause

Sign In with your My Oracle Support account

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

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms