HP Tru64 UNIX and TruCluster Server Version 5.1B-5 Patch Summary and Release Notes (March 2009)

tunable pwrite_no_append (in VFS subsystem) has to be set to 1 to enable this
behavior.
3.1.11 smmsp User and Group Not Required for sendmail
The smmsp user, group, and the /usr/var/spool/clientmqueue directory were
created as a future requirement for sendmail in the previous patch release v5.1B-4.
Because, sendmail is not smmsp enabled, the smmsp user, group, and /usr/var/
spool/clientmqueue will no longer be required. It is recommended that you remove
these items if they are not being used for any other purpose on the system, including
alternate sendmail implementation.
The following command displays how to delete the clientmqueue directory tree:
# rm -rf /usr/var/spool/clientmqueue
The following command displays how to delete the smmsp user and group:
# userdel smmsp
# groupdel smmsp
NOTE: Check the root directory and delete the clientmqueue directory, the user,
and group related to the root directory for the patch kit install as follows:
#chroot $_ROOT /sbin/rm -rf /usr/var/spool/clientmqueue
#chroot $_ROOT /usr/sbin/userdel smmsp
#chroot $_ROOT /usr/sbin/groupdel smmsp
where $_ROOT is the alternate root directory
3.1.12 Possible Performance slowdown of Oracle 8.1.7 after Tru64 UNIX Rebranding
When kernel profiling and auditing were run on Oracle, under Version 5.1B-3,
Asynchronous I/O + Direct I/O calls were seen. However, in Version 5.1B-4 and
higher versions, no Asynchronous I/O + Direct I/O calls (other than AIO setup calls)
were seen.
If this behaviour is seen on your system, you can modify /etc/sysconfigtab under
generic to change:
version_banner = HP Tru64 UNIX
version_avendor = HP
version_vendor = Hewlett-Packard Company
to
version_banner = Compaq Tru64 UNIX
version_avendor = COMPAQ
version_vendor = Compaq Computer Corporation
Then reboot the system and check the Oracle performance.
38 Tru64 UNIX Patches