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Having recently installed IBM MobileFirst on Linux on System z, we know that this installation is not really complicated but is also not as simple as running setup.exe and following the prompts. In order to configure the entire product, one must essentially perform three installations and each of these installations may follow a different process. In the case of our test environment, we installed and configured WebSphere Application Server Liberty Profile (hereafter called Liberty) and IBM MobileFirst Server (hereafter called MFS).... [More]
written by Torin Reilly posted by Matthew Cousens IBM MobileFirst provides an excellent framework for rapid assembly of robust mobile applications. MobileFirst Studio even includes a simulator which allows for testing directly in your browser. But what do you do when you wish to test the application at a production scale before releasing it into the wild? Apache JMeter allows you to do just that. JMeter is an application that allows you to load test your web-based applications over all the common web protocols. In our case we will... [More]
RACF recently introduced new health check function for ICSF via APAR OA44696. This APAR introduces two new class active checks, RACF_CSFKEYS_ACTIVE and RACF_CSFSERV_ACTIVE. In addition to those two health checks, they have added an ICSF Dataset Report to the existing RACF_SENSITIVE_RESOURCE check. This report shows the access for your current CKDS, PKDS and TKDS. To ensure no one has direct access to your KDS datasets, ICSF recommends you protect your KDS dataset name resource in the DATASET class. If a dataset profile is used, as opposed to... [More]
Migrating to IMS Version 13.1 This topic discusses our experiences with migrating our production 9-way IMS data sharing group (composed of members IMS8, IMS9, IMSA, IMSB, IMSC, IMSE, IMSF, IMSL and IMS0) from IMS Version 12 to IMS Version 13. It is not intended to be a step-by-step procedure because each migration is unique due to the IMS configuration and features selected. We used the following documentation to plan the migration: IMS Version 13 Release Planning IMS Version 13 Installation IMS Version 13 System Definition All of the IMS V13... [More]
A colleague from the field reached out to me recently with a couple of questions on IRD, Defined and Group Capacity Limits which made me think of a zEC12 GA2 related change so figured if he can benefit from it maybe others could do so here we go ... First of all WLM Capping is the same thing as Soft Capping and you could say that they are 'implemented' via Defined and/or Group Capacity Limits . Both Defined Capacity Limit (DCL) as well as the Group Capacity Limit (GCL) are specified in Millions of Service... [More]
IBM recently moved from individual product information centers to IBM Knowledge Center. For z/OS, delivery of the PDF files and electronic collection kits continue as usual. Visit the z/OS library in IBM Knowledge Center (www.ibm.com/support/knowledgecenter/SSLTBW/welcome).
With the IBM United States Hardware Announcement 113-121, dated July 23, 2013 ( http://www.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... [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 .
Ignore This! 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 occurs between two... [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 user may... [More]
Introduction: 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 (ML1)... [More]
RLS Catalog Migration Introduction 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. Migration Steps 1. Make sure all the systems sharing the user catalog are running on z/OS V2R1. The... [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 IXLA1MG at the... [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 either on an IBM... [More]