IBM Z Software


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z/TPF Product Family

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ZMDES Clean Up after zDFDL Schema zOLDR Fallback or zOLDR Delete

1. ZMDES Manage Deployment Descriptors Process requires multi-CPU/LPAR clean up after a zDFDL Schema zOLDR Fallback or Delete. The other LPARS in the z/TPF Loosely Coupled Complex (LCC) generally do not have their tables updated until an IPL. This...
almost 6 years ago in z/TPF Product Family / z/TPF 0 Is a defect

STIM items scheduled on same minute boundary

after some research we found this was because of a peak in activityscheduled from the STIM table.This bottleneck is caused by the STIM table scheduling too many itemson the same minute boundary, this is most noticable after a long outagewhen TPF i...
almost 12 years ago in z/TPF Product Family / z/TPF 7 Not under consideration

ztpld clear out the KSA (keypiont staging area)

Customer is requesting that ztpld program load process program (cil0) always clear out the KSA (keypoint staging area). The reason for the change is that there was an old keypoint in the keypoint staging area when keypoints were being loaded .&nbs...
almost 12 years ago in z/TPF Product Family / z/TPF 3 Not under consideration

Host Connecion Emulator Session missing from Toolkit 4.6

I am in charge of migrating TPF Toolkit from version 4.2.11 to version 4.6 and there is major functionnality that missing : Host Connecion Emulator Session. Most of our developers use this feature to connect to the TPF machine and perform tests. A...
about 6 years ago in z/TPF Product Family / TPF Toolkit 1 Not under consideration

Suppress/Circumvent MVT messages

I've been requested to ask IBM if they can provide a method of circumventing the MVT Validation during IPL/Restart of a VPARs System. We currently have many 1/2 test systems (1K modules) which when IPL'ed against create pages and pages of errors b...
about 6 years ago in z/TPF Product Family / z/TPF 2 Not under consideration

Support 4K RSA Encryption/Decryption via Crypto

The Dept. of Treasury is requiring us to adopt stronger security standards, such as using >2K public/private RSA keys, specifically, 3K or 4K keys. The issue is performance-related (CPU). The z/TPF OS has only put in support to call the crypto ...
about 6 years ago in z/TPF Product Family / z/TPF 0 Future consideration

Reduce CPU utilization by TPFDF data collection

TPFDF open/close routines in UBC0 collect data for ECB resource monitor, CDC, and TPFDF data collection. These collections run constantly but are rarely used. A switch to control these counters would reduce CPU utilization by TPFDF.
over 6 years ago in z/TPF Product Family / z/TPFDF 1 Not under consideration

Enhance the looping catastrophic monitor

The looping catastrophic monitor aborts restart after recovery log processing in restart. This is before tape restart and IPC restart. Although it's likely that a looping catastrophic is the same dump, aborting before tape restarts means the last ...
over 6 years ago in z/TPF Product Family / z/TPF 1 Not under consideration

Need option to suppress selected recoup messages

DXC has opened a few PMRs (64053, 91012, and 72575) in the past to resolve the issue with TOS consoles falling back because TOS can't keep up with the high volume of recoup status messages. IBM did provide a software patch to prevent losing the co...
over 6 years ago in z/TPF Product Family / z/TPF 1 Not under consideration

Add support for Elliptic curve Diffie-Hellman (ECDH) Cryptography

ECDHE is becoming more common with the systems that connect with z/TPF. We would like to see z/TPF support the newer ciphers before it becomes a security requirement.
over 6 years ago in z/TPF Product Family / z/TPF 3 Not under consideration

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