odbcClose(channel)## S3 method for class 'RODBC':
close(con, \dots)
odbcCloseAll()
odbcConnect.odbcClose returns invisibly a logical indicating if it
succeeded.odbcClose cleans up and frees resources. It is also the method for the
generic function close. odbcCloseAll closes all open channels (amongst the first 1000
used in the session)
Channels are closed at the end of an Rsession, and may also be closed by garbage collection if no object refers to them.
odbcConnect