I have environment settings in a UDF that sets the environment variables to the values that I expect and require. In the form data session I can call this function.

FUNCTION defaultsets		
	SET EXCLUSIVE        OFF
	SET ALTERNATE        OFF
	SET ANSI             ON
	SET AUTOSAVE         ON
	SET BELL             ON
	SET BRSTATUS         ON
	SET CARRY            OFF
	SET CENTURY          ON
	SET CLEAR            ON
	SET CLOCK            STATUS
	SET CONFIRM          ON
	SET CONSOLE          ON
	SET CPDIALOG         OFF
	SET CURSOR           ON
	SET POINT TO
	SET DATE TO          AMERICAN
	SET DECIMALS TO      4
	SET DELETED          OFF
	SET DEVICE TO        SCREEN
	SET DOHISTORY        OFF
	SET ECHO             OFF
	SET ESCAPE           OFF
	SET EXACT            ON
	SET FIXED            OFF
	SET FULLPATH         ON
	SET HEADING          OFF
	SET LOCK             OFF
	SET MULTILOCKS       ON
	SET NEAR             OFF
	SET ODOMETER TO      100
	SET OPTIMIZE         ON
	SET PRINTER          OFF
	SET REFRESH  TO      0,0
	SET REPROCESS TO     10
	SET RESOURCE         OFF
	SET SAFETY           OFF
	SET STATUS           OFF
	SET STATUS BAR       ON
	SET TALK             ON
	SET DEBUG          OFF
	SET NOTIFY         ON
	SET TEXTMERGE        OFF
	SET TRBETWEEN        OFF
	SET TYPEAHEAD TO     20
	SET UDFPARMS       	VALUE
	SET UNIQUE           OFF
	SET VIEW             OFF
	SET COMPATIBLE       OFF
	RETURN

>Using priv data sessions Here what is behind my save button:
>
>SELECT v_person
>oVar.PersId = pk_pers_id
>
>oPro.val_contactdata()
>
>But once I got into my val_contactdata() method, all tables opened previously are closed!!! Any clues to why this happens...again, my datasession on my form base is set to private data sessions....