Answer Posted / sanjudharan
Control Interval is analogous to a physical block for QSAM
files. It is the unit of i/o. Must be between 512 bytes to
32 k. Usually either 2K or 4K. A larger control interval
increases performance for sequential processing while the
reverse is true for random access. Under CICS when a record
is locked, the entire CI gets locked.
Control area is a group of control intervals. CA is used
during allocation. CA size is calculated based on the
allocation type (cyl, tracks or records) and can be max of
1 cylinder
Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
Explain the process in which flat files are converted into vsam files?
what is meant by s0c-07 system abend codes?
what do you mean by a vsam split?
What is the use of access method services in vsam?
What does the keyranges parameter in define cluster command do?
what are the idcams commands that can be used for vsam and explain each of them.
Explain the catalog?
What is a lds (linear data set)?
what are s0c1, s0c4, s0c5, s0c7 abends?
How do you define an altindx?
What is a base cluste?
in a cobol select statement, can you tell what is the organization for a ksds?
Explain the significance of the shareoptions parameter?
there are seven idcams commands in vsam. Can you name and explain each of them?
Can you delete vsam files with the delete option of the disposition parameter of jcl?