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Answer Posted / srikanth
A cache is a memory area where informatica server holds the
data to perform calculations during the session. It
creates cache files in the $PMcachedir and as soon as the
session finishes, server deletes the cache files from the
directory.
if we know the data does not change between session runs,
we can persist on the disk (persistent cache ) and use
those files in other sessions. in this case, the server
does not delete the cache files as soon as the session
finishes.
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