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Concepts of Fine Tuning
VSAM File Architecture
Control Interval and Control
19 other sections not shown
Access Method Services alternate index cluster alternate key base cluster buffer allocation BUFFERSPACE BUFNI and BUFND bytes CA-percent calculated Chap CICS CICS/VS CISZI Cobol coded command control interval cylinder DASD space data buffers data CI size data CIs data component default DEFINE CLUSTER delete determine the number disk DOS/VSE ESDS example Figure file requests free space FREESPACE high used RBA HURBA I/O service IBGs IBM DASDs ICF catalog IMBED and REPLICATE IMS/DB index and data index buffers index component index set records interblock gap KSDS look-aside LSR buffer pool LSR pool macro megabytes MVS/XA NOIMBED NOREPLICATE number of data number of index number of records option pointers read-write arm record add reduce rotational delay RRDS sequence set record sequential space requirements splits STRNO technique update upgrade set value of BUFNI VSAM data set VSAM file VSAM space