IBM Z Hardware and Operating Systems Ideas Portal


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Inttermitten GRE packet processing delay on the target system cause unnecessary TCP retransmission

We are using VIPAROUTE and QDIO Accelerator for efficient delivery of distribute Sysplex Distributor traffic to the targets.There are a lot of unnecessary TCP retransmissions caused by intermittent GRE packet processing delay on the target system....
over 5 years ago in z/OS / Communications Server 1 Not under consideration

RLIST for specific profile '*'

The RLIST command treats the asterisk as a wildcard. If a profile is named '*' then the command will list all profiles not just that one. Please enhance the RLIST command to allow the list of one specific profile especially a profile named '*'
almost 3 years ago in z/OS / RACF 3 Not under consideration

Enhancement to RACF to notify when there is a prolonged contention on critical RACF resources

We have experienced a prolonged Security Manager resources contention situation where the critical security manager resource is lockup by a low priority task while there is a higher priority task entered a spin loop and consumed all the CPUs in th...
over 1 year ago in z/OS / RACF 1 Not under consideration

To allow configured the parameter "revoked after unsuccessful password attempts" in the RACF user profile. Actually it is only possible as a generic rule for all the users through the SETROPTS PASSWORD(REVOKE(d)) command

To avoid a DoS (Deny of Service) due a service user revoked because a wrong use of the password causing impact in the applications & services using it.
over 1 year ago in z/OS / RACF 1 Not under consideration

Enhance TIOT Exceeded Message IEF240I

Enhance IEF240I or create a new message that would inform the user that the TIOT limitations are exceeded. Currently there is a maximum fixed size for the TIOT defined in the ALLOCxx member of parmlib of 64K. not all shops run with this size. So i...
over 8 years ago in z/OS / BCP_Allocation 3 Not under consideration

RMF details about ECSA consuption by %MVS and VTAM address space

%MVS and VTAM represent one of the biggest consumers of ECSA memory, and as we often have shortage alerts, it would be interesting to know which processes are consuming more ECSA. With more details we could prevent system interruptions and transac...
almost 2 years ago in z/OS / RMF 4 Not under consideration

Clarify use of UID(0) and BPX.SUPERUSER for osnmpd

The z/OS server osnmpd (SNMP daemon) is documented as needing either UID(0) or to have read access to BPX.SUPERUSER in FACILITY class. Empirical evidence shows that it work satisfactorily with neither. Please clarify the security requirement for o...
over 2 years ago in z/OS / Communications Server 1 Not under consideration

Sizing IXGBRWSE BUFFLEN / System Logger IXGBRWSE Performance Enhancement

RC08 RSN80F (IXGRSNCODEBADBUFSIZE) is returned by System Logger when the data result of an IXGBRWSE invocation is too large to fit into the buffer provided by the caller. Currently, the recommended method to determine the BUFFLEN necessary for an ...
almost 3 years ago in z/OS / BCP_Logger 2 Not under consideration

zERT - Match the least common denominator of a rule

With the current setup of Reusable Rules that combines a combination of Traffic Descriptor Data Endpoints TLS or SSH version Protection Characteristics It is required that all of the specifics match to trigger the required action. This beha...
almost 2 years ago in z/OS / Communications Server 1 Not under consideration

SMF recording type lacking indicator

Currently when switching recording modes from LOGSTREAM to DATASET no message is produced that is unique to the recording mode/type.There is also no easy way to Display the SMF recording mode. Suggestion: We would like to request such a command li...
almost 5 years ago in z/OS / BCP_SMF 3 Not under consideration

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