#include <db.h>

int
DB_CHANNEL->close(DB_CHANNEL *channel, u_int32_t flags);  

The DB_CHANNEL->close() method closes the DB_CHANNEL handle, freeing any resources allocated to the handle. All DB_CHANNEL handles must be closed before the encompassing environment handle is closed. Also, all on-going messaging operations on the channel should be allowed to complete before attempting to close the channel handle.

After DB_CHANNEL->close() has been called, regardless of its return, the DB_CHANNEL handle may not be accessed again.

The DB_CHANNEL->close() method returns a non-zero error value on failure and 0 on success.