CONTEXT_HASH <# of hash bins>
To speed the search for location of ISAM contexts, a simple hashing scheme is used. The number of hash bins defaults to six (6) for each user. If a large number of contexts are to be maintained, then this default can be overridden with this keyword.
Refer to the OpenISAMContext(), SelectISAMContext(), and CloseISAMContext() API calls for detailed information about this feature.