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To establish an instance, call oaconnect
and specify a compiled Omnidex Environment Catalog filespec
(or TurboIMAGE database name) through the environment parameter.
Specify the connect options through the options parameter,
including user and password, as appropriate.
It is possible to open several catalogs concurrently and
thereby establish several environment instances in the same
application. This is useful when data is organized in several
separate environment catalogs.
Close an Instance
When an application no longer requires access to an Omnidex
Environment Catalog, it should close the instance before terminating.
If the instance remains open after the application terminates,
it may interfere with other applications and users trying
to access the environment catalog. Although this is unlikely,
it is a good practice to close instances when the application
finishes using them.
Omnidex Client applications should close instances to free
up memory on the PC and to close socket connections to the
server.
To close an instance, call oadisconnect
and pass the value returned to the instance parameter of oaconnect.
Closing an instance automatically closes any cursors open
for the environment established for that instance. When performed
from a client application, it also closes any socket connections
between a client and server.
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