Known problems on z/OS platforms

This topic contains troubleshooting information for known problems on z/OS® platforms.

MEMLIMIT parameter must be set for the IBM HTTP Server address spaces

The MEMLIMIT parameter can be set on a system-wide basis (in the SMFPRMxx parmlib member) or in the OMVS segment of the server ID for each IBM® HTTP Server instance. See the z/OS V1R8.0 MVS™ Extended Addressability Guide for more information. For recommended MEMLIMIT values, see Performing required z/OS system configurations.

If you do not set the MEMLIMIT parameter, the Web server will not start, and one of the following console messages might result: To determine if any 64-bit programs run on this system, run the following command from a shell prompt: /bin/localedef64.
Expected output:
# /bin/localedef64 
EDC4175 40 Missing output locale name.
Example of a failure:
# /bin/localedef64 
Killed
To resolve this problem for IBM HTTP Server, which is an AMODE64 application, the MEMLIMIT must be changed from the system default of 0.

Integrated Cryptographic Services Facility (ICSF) is not enabled for AMODE64

z/OS V1R6 might need ICSF 64-bit Virtual Support to use ICSF cryptographic hardware. To issue messages on ICSF status, GSK_SSL_HW_DETECT_MESSAGE=1 is set in bin/envvars.

If ICSF is not enabled for AMODE64, the GSK_SSL_HW_DETECT_MESSAGE will result in the following message logged to the error log at startup:
System SSL: ICSF services are not available
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Last updated: January 28, 2018 08:56 PM GMT-06:00
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