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Distance-learning - VSAM: Performance and Tuning


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VSAM: Performance and Tuning
DURATION: 2 days

FEE: $1,190

Based upon a class size of six students.

Scheduling can be adjusted to employee work hours and incorporate client assignments.

There is a surcharge associated with training two or fewer students.


  • Programmer
  • System Designer
  • System Programmer
  • IT Professional


    1. VSAM Components and Evolution
      • The components and types of VSAM datasets.
      • Identify the performance areas that need to be managed.
    2. KSDS Structure
      • The concepts of splits, where to find splits statistics, and what to do with splits.
      • Create a KSDS and load it with data.
      • Code a program which will cause splits.
      • Determine the number of CA and CI splits and undertake the effort to improve its implementation on the existing program.
    3. The Cluster on the Disk
      • Examine VSAM usage at the client installation and how it can be improved.
      • Given case studies with usage statistics, provide estimates on storage, I/O amounts, and memory.
      • Recognize the difference between allocating a VSAM dataset for CICS and batch.
      • Create a VSAM KSDS for online processing.
    5. Alternate Indexes and Paths
      • Determine the effects of multiple indexes on a base.
      • Effects of multiple indexes on locks.
    6. Programming for Performance
      • Minimize the number of splits on a KSDS.
      • Create a KSDS with distributed freespace.
    7. Strings and Buffer Pools
      • Determine if string waits are occurring in CICS.
      • Calculate an acceptable amount of string waits.
    8. Monitoring for Performance
      • Determine when a dataset should be reorganized.
      • Given system statistics from a LISTCAT, calculate the VSAM ratios and determine whether a dataset should be reorganized.
    9. KSDS Index Component
      • Determine the effects of front and rear compression.
      • Calculate the average key length.
    10. VSAM and JCL
      • Create a VSAM dataset with JCL and SMS.

    Web-based Training   Blended Learning    


Effective February 27, 2012, the course dates listed on the SYS-ED schedules only will be available based upon approved and authorized user ID.

Copyright Acknowledgement: The software product(s) listed in this outline are owned and copyrighted by their respective companies. SYS-ED makes no representation regarding ownership in any of the software products that we train on.

SYS-ED courses are not intended for or open to the general public. They are intended for employees of Fortune 1000 companies, government municipalities, consulting companies, software, companies, healthcare providers. and mid-sized businesses. Individuals attending such courses will be required to execute a statement acknowledging that the employer will be paying for the SYS-ED course and that the employer has a licensed version of the software.