For VSAM libraries, the default blocksize of 3120 (RECSZ in IDCAMS DEFINE) results in a CISZ of 3584, 13 blocks per track and 71.6% utilization. Increasing the RECSZ to 3577 (the maximum in a 3584 CISZ) results in a 82.1% utilization. Increasing it to 4091 (the maximum in a 4096 CISZ) results in 86.6% utilization. Reducing it to 2041 (2048 CISZ) results in 75.6% utilization; reducing it to 1017 (1024 CISZ) yields 59.2% utilization.
- Notices
- Preface
- Audience for this Guide
- What is Covered in this Guide
- What’s new in Version 7
- Features from Version 6
- Naming protocol
- What You Should Know to Use this Guide
- Glossary
- Conventions used in this guide
- What This Guide Contains
- Additional tableBASE references
- VTS Manager References
- Customer Support
- Training and Professional Services
- About DataKinetics
- Installation Modifications
- tableSPACE Reporting
- tableBASE User Exits
- Program Call Server
- DB2 Stored Procedures
- IMS
- CICS
- VTS (Virtual Table Share)
- VTS Gate (VTS with Enhanced Security)
- tablesONLINE/CICS Architecture
- tablesONLINE/CICS Security
- tablesONLINE/CICS Administration
- Best Practices
- tableBASE Diagnostic Information
- tableBASE run-time options
- ALLOW_TB_LIB_IO—Allow tableBASE Library I/O
- CICSJRNL—CICS Journal File ID
- DATERTNX—Date-Sensitive Processing Found Code
- FGDELIM—Fetch Generic Delimiter
- HASH_HI_DEN_LIM—High Density Limit for Hash Indexes
- HASH_LOW_DEN_LIM—Low Density Limit for Hash Indexes
- LDS—Linear Data Set Use
- LIBnn, ML—tableBASE Library List
- LISTOPTIONS—List Parameter Options
- LOCKTIMERC—Lock Timer Wait Value
- LOCKTIMEWTO—Lock Timer Message Wait Value
- MAXNMTAB—Maximum Number of Tables
- MTRETAIN—Retain Rows and Index Areas
- MULTITASKING—Multitasking
- MULTOPNX—Multiple Alternate Index
- OVRRIDES—Allow Changes to Status Switches
- RACF_LIBACCESS—Perform Checks on Protected Libraries
- RACF_VTS—Perform Checks on SAF Interface Protected VTS-TSRs
- STROBE—Strobe Interval
- STROBEMETHOD—Strobe Method
- SUPPRESS_DUMPS—Suppress tableBASE Messages and Dumps
- SWITCHES—Status Switches
- TABLEWAITRC—Table Open Enqueue Wait Time
- TABLEWAITWTO—Table Open Enqueue Report Time
- TPVM—VTS Group Manager Use
- TSR_ALGORITHM—Optimize TSR Usage
- TSR_KEY_PROTECT—Hardware Key Protection for VTS-TSRs
- TSR_WARNING_FREQ—Frequency of TSR Allocation Warnings
- TSR_WARNING_PCT—Percentage of TSR Allocation for Warning Activation
- TSRACCESS—Read Only (RO) or Read Write (RW) TSR Access
- TSRSIZE—tableSPACE Region Size
- USEREXITS—User Exits
- VTSFIRST, VTSLAST—VTS Search Sequence
- VTSNAME—Specifying the Name of a VTS-TSR
- VTSPREFIX—VTS Prefix Definition
- ZEROROWS—Zero Data Table Rows on De-allocation
- Setting up an organization
- tableBASE messages
- PC Server implementation in a CICS environment
- Home
- /
- Documentation Archive
- /
- tableBASE Administration Guide
- /
- Best Practices
- /
- tableBASE library definition considerations