The oncheck utility reports on the state
of a table and provides a means for a database server administrator
to check on the state of objects in a database.
You, as an access-method developer, can also use oncheck to
verify that the access method creates and maintains appropriate tables.
As
the following figure shows, the database server calls only one access-method
function for the oncheck utility. If necessary,
the am_check purpose function can call am_open and am_close or
can itself contain the appropriate logic to obtain handles, allocate
memory, and release memory. Figure 1: Processing the oncheck utility
