Read Before Installing MPE/iX Release 7.5 PowerPatch 5 (Software Release C.75.05) (30216-90371)

Chapter 1
Information to Read Before Installing MPE/iX 7.5 PowerPatch 5
Read Before Installation: Critical Patches Included In Power Patch C.75.05
5
1 Information to Read Before Installing
MPE/iX 7.5 PowerPatch 5
Read Before Installation: Critical Patches Included In Power Patch
C.75.05
This Power Patch includes two critical patches that were made available 31 October 2007. At that time
Hewlett-Packard announced the availability of these patches via a mass-mailing and made them available
from the HP ITRC web site.
These patches address issues which are rare and few if any customers are at risk of being impacted by them.
The first of the two patches, MPENX11A addresses the following issues:
1.SORT.PUB.SYS and programmatic calls to HPSORTOUTPUT: Customers on MPE/iX Release 6.5, 7.0 or 7.5
who sort 4GB or more of data are at risk. When either interface is used to sort more than 4GB of data, the
returned record length could in rare instances be corrupted. If the record length returned is less than it
should be then data could be lost.
2.MPE/iX OS millicode handling of long pointer access to large files: When the OS copies data from a long
pointer location only one byte from a range is moved if, and only if that range starts six, five, four, three or two
bytes from the end of a four gigabyte space and the length of the move transfers all remaining bytes of the
space. No other source address or transfer length combinations are affected nor are transfers to such
addresses.
The second patch is MILNX10A which supplies a new millicode. Non-HP programs which are suspected of
being at risk of this issue will need to be recompiled after installation of MILNX10A to address the issue.
Please see http://www.hp.com/go/e3000/ for complete details about these Critical Patches.