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Override |
Override is a product which
is designed to significantly increase the performance
of VSAM in every installation. It does this in a way
which is transparent to the programs involved, does
not alter any VSAM files and does not make any modifications
to VSAM itself. While each installation is different,
experience with some installations has shown potential
savings to be astounding. The following savings have
been achieved in benchmarks of real life applications:
| |
Physical |
I/O's |
Elapsed |
|
| |
Typical sequential access |
33% |
10-50% |
|
| |
Typical random access |
25-50% |
40-60% |
|
| |
Clustered random access |
99% |
95% |
|
In
fact, the performance benefits can be so significant
that it may be possible in some cases to defer the
purchase of new hardware. Perhaps best of all, these
savings can be realized almost immediately. Override
installs in minutes with no need to change any existing
files, programs or JCL. |
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