There are tools that can provide system details, but administrators need a way to analyze and visualize CICS performance data. This tip shows you how to tap the mainframe and interpret that data with Microsoft Excel. This transaction manager is designed to handle and track enormous processing loads.
Performance records are interesting to anyone tuning an application or dissecting a problem, but mining CMF data can be cumbersome. The records have a self-defining layout that is difficult to parse without complicated programming. This makes the data easier to process and manipulate. A simple script can tackle the process for you. Check the CICS utility guide to get the full meaning of any messages.
The MCT parameter specifies the suffix for the monitoring control table MCT used by the region to tailor performance records. The two sample scripts above cover both steps. Processing mainframe performance records with Rexx The format of the unloaded records is almost as mysterious as the original. Fortunately, you can also use Rexxwhich works well with character data, to create a quick script to process the unloaded records.
Each record should be read as one long string so the program can use the built-in substring SUBSTR and conversion functions to pick off interesting fields. Below is a sample Rexx code fragment:. Also worth noting, CMF datasets tend to be too large to use Rexx facilities like queue or stem variables, so the second line indicates that the records should be read one at a time. Note that it is divided by 4, and multiplied by. Finally, the cpucount line converts to a count field.
After picking out the interesting fields the output should look something like this:. This opens a window where you can select the file.
CSV file in a suitable format. The text import wizard appears as in Figure 1 and asks how to interpret the file. Select comma delimited fields. Figure 3: Once the. The latest phase in his career finds him an operations architect responsible for establishing mainframe strategy and direction for a large Insurance company. He lives and works with his family in south Texas. Please check the box if you want to proceed.
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Our motto is "Success is an exercise in finding win-win situations"meaning that by providing you with a timely, high quality solution that meets your business needs, we assure our own success. Please let us bring these qualities to your organization as we help you meet your pressing business needs. Contact Information.CICS is middleware designed to support rapid, high-volume online transaction processing.
A CICS transaction is a unit of processing initiated by a single request that may affect one or more objects. CICS provides services that extend or replace the functions of the operating system and are more efficient than the generalized services in the operating system and simpler for programmers to use, particularly with respect to communication with diverse terminal devices.
Applications developed for CICS may be written in a variety of programming languages and use CICS-supplied language extensions to interact with resources such as files, database connectionsterminals, or to invoke functions such as web services. CICS manages the entire transaction such that if for any reason a part of the transaction fails all recoverable changes can be backed out.
While CICS has its highest profile among financial institutions such as banks and insurance companies, many Fortune companies are reported to run CICS along with many government entities. CICS is also widely used by many smaller organizations. CICS is used in bank-teller applications, ATM systems, industrial production control systems, insurance applications, and many other types of interactive applications.
JS support as well as new and enhanced capabilities in security, resilience and system management. It became clear immediately that it had applicability to many other industries, so the Public Utility prefix was dropped with the introduction of the first release of the CICS Program Product on July 8,not long after IMS database management system. Customer pressure kept it alive, however. The core of the development work continues in Hursley today alongside contributions from labs in India, China, Russia, Australia and United States.
IBM executives incorrectly felt that the future would be like the past with batch processing using traditional punch cards. IBM reluctantly provided only minimal funding when public utility companies, banks and credit-card companies demanded a cost-effective interactive system similar to the IBM Airline Control Program used by the American Airlines Sabre computer reservations system for high-speed data access-and-update to customer information for their telephone operators without waiting for overnight batch processing punch card systems.
It was then given back to IBM for free distribution to others. In a few years, [ when? IBM executives did not recognize value in software as a revenue-generation product until after federal law required software unbundling. Because of the limited capacity of even large processors of that era every CICS installation was required to assemble the source code for all of the CICS system modules after completing a process similar to system generation sysgencalled CICSGENto establish values for conditional assembly language statements.
This process allowed each customer to exclude support from CICS itself for any feature they did not intend to use, such as device support for terminal types not in use.
CICS owes its early popularity to its relatively efficient implementation when hardware was very expensive, its multi-threaded processing architecture, its relative simplicity for developing terminal-based real-time transaction applications, and many open-source customer contributions, including both debugging and feature enhancement. This work won a Queen's Award for Technological Achievement.
These twin technologies enabled easier integration of CICS components with other Enterprise applications, and saw widespread adoption. This technology saw regular enhancements over successive releases of CICS. Many of the newer web facing technologies were made available for earlier releases of CICS using delivery models other than a traditional product release.
This allowed early adopters to provide constructive feedback that could influence the final design of the integrated technology. Many partner products have also been used to interact with CICS. Modern versions of CICS provide many ways for both existing and new software assets to be integrated into distributed application flows. TXSeries is distributed transaction processing middleware. This includes performance management as well as deployment and management of CICS resources.
Multiple-user interactive-transaction application programs were required to be quasi - reentrant in order to support multiple concurrent transaction threads. A software coding error in one application could block all users from the system. Considerable effort was required by CICS application programmers to make their transactions as efficient as possible. A common technique was to limit the size of individual programs to no more than 4, bytes, or 4K, so that CICS could easily reuse the memory occupied by any program not currently in use for another program or other application storage needs.
With s-ands hardware resources expensive and scarce, a competitive "game" developed among system optimization analysts. When critical path code was identified, a code snippet was passed around from one analyst to another.Mainframe Outsourcing involves the transitioning of a number of technical support functions that are currently being handled in-house to an outsourcing provider.
These services would begin after a contract is in place and a vendor starts managing your mainframe system. The services listed below include the typical types of support that a vendor could provide. A vendor will provide technical support for the mainframe environment. These services include the following:. Operating System: A vendor will install operating system software. A vendor will configure the software, apply upgrades and patches from the manufacturer.
A vendor will implement LPARs utilizing the hardware management console or a primary partition. They provide a number of support services including:. Installation, configuration and maintenance support for your operating system and related third party software for the mainframe environment.
A hosting vendor typically will provide the installation, configuration and maintenance support for your mainframe CICS environment. These services include:. Upgrades for CICS to new releases or versions as required to maintain vendor currency using standard change control procedures.
An outsourcing vendor can provide systems technical DBA support for your database i.
These services include installation, configuration and maintenance of the mainframe database software as well as support for the system directories, catalogs and dictionaries. Learn how to avoid the top 10 mistakes executives make when they outsource their mainframe. Use our free cost calculator to determine how much it would cost to outsource your mainframe. Management of your data storage including mainframe storage and tape as well as the hardware and software used to provide data storage.
A vendor will provide:. Storage capacity planning by reporting on historical growth, and in combination with information regarding anticipated business changes, extrapolation of future storage requirements. As resource utilization approaches your specified thresholds, a vendor will notify you and review recommendations.
Other capacity management functions include:. Capacity Planning is the process of predicting sufficient resource requirements to meet the future needs of the mainframe. Specific tasks include:. For CPU capacity planning, a vendor will provide graphs showing historical and current usage. A vendor will collaborate with you to discuss anticipated business driver changes, their projected effects on system performance and potential courses of action.
A vendor will provide capacity planning services including the analysis of current CPU resource utilization and the projection of future CPU consumption. A vendor will identify, analyze and resolve issues related to transient degradation of service levels.The mainframe operating systems of IBM are time-sharing and batch.
CICS basically deals with the execution as well as development of online applications. It establishes a communication channel through the terminal and facilitates the receiving as well as sending of data that is formatted.
One of the primary aspects of CICS is the accessibility of database as well as the files that they contain. CICS happens to be a batch job itself and runs on high priority in the operating system. PPT Program Processing Table : — This basically consists of a list that has all the names of the programs in it along with maps. Furthermore, it tells us whether the version that is absolutely recent as available as a program in CICS or a fresh copy of the program is supposed to be loaded.
TCT basically stands for Terminal Control Table and is a compilation of all the respective terminals. PCT stands for Program Control Table and basically has a complete list of transaction identifiers that are paired to respective corresponding programs.
This process starts when the key is entered into the transaction, and the enter key is pressed. The execution process continues till the program returns the control back to CICS.
It happens to be an ID for system transaction and inquires about the status. Furthermore, it changes the status of the resources. This is basically used as a passing medium for data amongst multiple programs that are loaded by a set of transactions or a particular transaction. Transid basically stands for transaction identifier.
In order to invoke a task of CICS, this character code consisting of four letters will be used. By this process, there will not be a termination of Xn, but the transaction will surely be terminated. XCTL basically acts as a medium through which you can pass the control through the identical task to another program.
XCTL happens to be a program control command. ENQ and DEQ are parts of task control commands that are used in making a resource serially recyclable. Can a CICS code be a part of a copybook? If so, then what are the outcomes after compilation? A CICS code can easily be a part of a copybook, but reprocessing has to be done after compilation process. VSAM file can be accessed through path. It is used in order to refresh the data that comes to the screen.
Whenever we are in the process of sending menu screens, the data is never sent. If the modification of the field has to be done on the screen, then MDT acts as a bit of an attribute byte.CICS provides services for running an application online, by request, at the same time as many other users are submitting requests to run the same applications, using the same files and programs.
CICS manages the sharing of resources, the integrity of data and prioritization of execution, with fast response. A CICS application is a collection of related programs that together perform a business operation, such as processing a travel request or preparing a company payroll.
CICS applications are traditionally run by submitting a transaction request. Execution of the transaction consists of running one or more application programs that implement the required function. In CICS documentation you may find CICS application programs sometimes simply called "programs," and sometimes the term "transaction" is used to imply the processing done by the application programs.
Mainframe Outsourcing Technical Support
CICS essentially separates a particular kind of application program namely, online applications from others in the system, and handles these programs itself. CICS conversational and pseudo-conversational programming In CICS, when the programs being executed enter into a conversation with the user, it is called a conversational transaction. A non-conversational transaction, by contrast, processes one input, responds, and ends disappears.
It never pauses to read a second input from the terminal, so there is no real conversation. How a CICS transaction flows While it runs, your application program requests various CICS facilities to handle message transmissions between it and the terminal, and to handle any necessary file or database accesses.
CICS program control A transaction task may execute several programs in the course of completing its work. Copyright IBM Corporation