IBM, the IBM logo, and ibm.com are trademarks or registered trademarks of International Business Machines Corp., registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web at "Copyright and trademark information" at ibm.com/legal/copytrade.shtml.
With the IBM United States Hardware Announcement 113-121, dated July 23, 2013
( http://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/1/897/ENUS113-121/index.html ),
IBM introduced support for Coupling Thin Interrupts with CF Level 19 on zBC12 and zEC12 servers. Coupling thin interrupts are designed to improve the efficiency of environments where shared engines are used by Coupling Facilities. It does this by allowing a coupling facility to voluntarily give up control of the shared coupling facility... [More]
ICSF HCR77A0 shipped with z/OS V2R1 in the fall of 2013. We originally tested this level of ICSF in preparation for its availability as a web deliverable in the fall of 2012. At that time, we did not have a blog. Instead we documented it on our library web page, under the Recent experiences and updates section ( www.ibm.com/systems/services/platformtest/servers/systemz_library.html ). If you would like to take a look, the entry is titled Migrating to and using ICSF HCR77A0 .
Using Data Replication's Ignore Transaction capability with bidirectional replication
We recently tested the IGNTRAN capability of IBM InfoSphere Data Replication's (IIDR) queue replication in our LCST/e zPET environment and wanted to share the procedure we used to implement this function. The goal of this test was to utilize IGNTRAN to reduce signals between my replication servers, theoretically increasing performance.
First, an introduction to some basic terminology. Replication in our environment... [More]
In this blog, we will introduce a change to restore/dump function. With the RESTORE command, you can restore data to DASD volumes from DFSMSdss-produced dump volumes. You can restore data sets, an entire volume, or ranges of tracks.
In z/OS V2R1, the RESTORE command is changed to allow users to specify how DFSMSdss should set the data-set-changed (DS1DSCHA) indicator for all data sets restored to the target volume. The DS1DSCHA is found in the Format-1/8 DSCB in the VTOC.
With z/OS V2R1, during DFSMSdss dump processing, the... [More]
In z/OS V2R1,the DFSMS storage Tier line item was introduced to manage Policy-based data movement from tier-to-tier within a Primary Storage hierarchy, leaving the data in its original format. The main purpose of this solution is to reduce the total cost of ownership (TCO) and enable DFSMS to influence IBM’s strength across multiple business groups: z/OS Systems Software, Software Group (DB2 and CICS) and Storage Hardware (Disk and Tape). In this solution, t he existing three-layer hierarchy Level 0, Migration Level 1... [More]
RLS Catalog Migration
RLS for Catalog is an enhancement to the Integrated Catalog Facility (ICF) to exploit VSAM Record Level Sharing (RLS) and Transactional VSAM (TVS). The purpose of this enhancement is to improve performance, stability, usability, and availability for catalogs. Below, we introduce an example of migrating a user catalog to RLS mode. We will use catalog CATALOG.DSNDBCG as an example.
1. Make sure all the systems sharing the user catalog are... [More]
While testing WebSphere MQ V7.1 with z/OS V2R1 we identified 2 toleration apars for WebSphere MQ with z/OS V2R1. Following are the specifics of those two APARs.
PM85814 - S0C4 dumps generated with title ENF LISTEN EXIT ERROR,ISSUER=IEFENFSR,ESTABLISHER=qqqqMSTR,xxxxxxxx,CSQEENFR,EXIT=yyyyyyyy,CSQEENF1 when the queue manager is a member of a queue-sharing group running on z/OS V2R1 and the queue manager is V7.1
PM86119 - the 'DIS CFSTATUS' command unexpectedly returns STATUS(UNKNOWN) and LOGREC shows an S0C4 abend in... [More]
RMF XP Microsoft Windows Support
In order to provide an integrated solution for all operating systems running on IBM System z hardware, RMF Cross Platform monitoring support (aka RMF XP) was introduced with z/OS V1R13 RMF. This function runs as a server instance in the z/OS USS environment and collects the performance metrics of the remote operating systems by means of the standard API's provided by the Common Information Model Architecture (CIM).
Prior to z/OS V2R1, RMF XP supports the following operating systems running... [More]
Health Checker will be sta rted automatic ally by the syst em at IPL time in z/OS V2R1. Two new keys (system parameters) HZS and HZSPROC in IEASYSxx are provided to identify HZSPRMxx parmlib member suffixes and Health Checker started procedure name to be used at the IPL-time:
Health Checker for z/OS setup in our systems
We added the following statement in IEASYSxx for Health Checker for z/OS auto start:
HZS=(LC,IA,CY) ... [More]
The remote crypto plug-in in the z/OS LDAP server provides access to PKCS#11 and CCA services for applications on open platform via tcp/ip protocal. PKCS #11 is one of the cryptographic standards of Public Key Cryptographic Standards (PKCS) that defines a set of platform-independent APIs for cryptographic tokens. The PKCS#11 standard defines the types of cryptographic tokens and how to create, issue, use, and delete tokens, including how to encrypt, decrypt, and hash data with those tokens. The remote crypto plug-in uses ICSF (Integrated... [More]
z/OS System SSL Services added TLS 1.1, 1.2, and NSA Suite B support in V2R1.
So LDAP also added the support. This support strengthens secure communications capability for the IBM TDS for z/OS (LDAP) server and its client C API. It advances ITDS for z/OS capability beyond TLS V1.0 protocol, allowing improved security not only for secure socket layer communications between IBM TDS for z/OS client and server, but also with either of these communicating with off-platform implementations which support these stronger standards.
z/OS UNIX Automount Enhancements
z/OS V2R1 provides several enhancements to automount. In this article, the following enhancements will be discussed:
Set permission bits
Substitute /// for allocany and allocuser
New Keyword for matching uppercase in Map files
Serialize automount appends
The following is what we did in z/OS Integration Test environment to test the enhancements of automount.
Set permission bits
In z/OS V2R1, the permissions... [More]
z/OS UNIX Provide JWT support for shell environment
In z/OS V2R1, z/OS UNIX provides a new parmlib setting and a new environment variable that installations and applications can use to set a time out value for when inactive terminal users will be logged off.
The new BPXPRMxx statement is called PWT. The options on this statement provide the ability to indicate if the SMFPRMxx JWT/TWT/SWT value is to be honored or not. The parmlib option will affect all processes in waits for tty reads/writes. The new environment variable... [More]
The objective of this is to exploit IMS CQS and log stream primary storage usage/management/notification enhancements to reduce log stream exploiter outages from primary storage full conditions. This blog will also provide more detailed data on log stream offload processing to assist customers in this tuning.
The system logger and IMS CQS (Common Queue Services) teams provided tuning advice to support an IMS CQS client to facilitate the use of a very large CF list structure (order of magnitude in gigabytes vs. megabytes). The... [More]