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 V1R6.0 MVS Extended Addressability Guide for more information. For recommended MEMLIMIT values, see Performing required z/OS system configurations.
If we do not set the MEMLIMIT parameter, all parts of the Web server will disable, and one of the following console messages might result:
- ABEND=S000 U4093 REASON=00000224
- no output from bin/apachectl -v
- bin/ab returns "Killed"
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 KilledTo 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
Related tasks
Performing required z/OS system configurations