HP Tru64 UNIX and TruCluster Server Version 5.1B-6 Patch Summary and Release Notes

O_APPEND Flag has no Effect on Behaviour of pwrite()
The pwrite() system call has been modified to conform to UNIX98 standard behavior. O_APPEND
flag now will have no effect on the behaviour of pwrite(). The sysconfig tunable
pwrite_no_append (in VFS subsystem) has to be set to 1 to enable this behavior.
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
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.
Version 5.1B-5 or Higher Kit Requires Uninstallation of Internet Express System
Authentication LDAP Module (IAELDAMXXX)
The Version 5.1 B-5 or higher patch kit installation fails if the Internet Express System
Authentication LDAP Module (IAELDAMXXX) is installed on the system. To install the Version
5.1 B-5 or higher patch kit, perform the following steps:
1. Uninstall Internet Express System Authentication LDAP Module (IAELDAMXXX). For
example,
set1d -d IAELDAMXXX
where, XXX stands for the IAELDAM version.
28 Tru64 UNIX Patches