Ioctl ASYNC_ADDSEG error, errno = 11 Trace Files on HP-UX
Last updated on MAY 24, 2017
Applies to:
Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.5 [Release 10.2]Information in this document applies to any platform.
***Checked for relevance on 29-DEC-2016***
Symptoms
On 10.2.0.4.3, HP-UX Itanium, Oracle doesn't open the /dev/async driver.
Trace files are generated with the below errors :
"Ioctl ASYNC_ADDSEG error, errno = 11"
Changes
Async IO has been configured according to documentation
(http://download.oracle.com/docs/cd/B19306_01/server.102/b15658/appb_hpux.htm#sthref691)
Privilegies for group dba:
sd900:rootsbrf:var/hpsupport getprivgrp dba
dba: RTPRIO MLOCK RTSCHED
Permissions on /dev/async :
sd900:rootsbrf:var/hpsupport ll /dev/async
crw-rw-rw- 1 oracle dba 101 0x000000 Feb 16 09:53 /dev/async
Cause
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