Steve Cosner, on the OTN Forms' forum explains how he successfully installed Forms 6i on Windows Vista.
The goal is to hide the complexity of the Java/JDAPI stuff for those people that do not have time/skill to implement
this Java API.
All the work expected to be done on the FMB files is described in a XML file.
Here is the Top 10 of the PJCs/JavaBeans you have prefered in September 2007:
It is frequently asked how to load a BLOB table column from the content of an external file.
This can be achieved by using the DBMS_LOB package's functions.
Sometimes it is also useful to extract the BLOB content back to a file.
Here is a procedure that achieves this task:
(Available since Oracle database 9i, that introduced the UTL_FILE.PUT_RAW() function)
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CREATE OR REPLACE PROCEDURE Write_Binary_file ( PC$Directory IN VARCHAR2 ,PC$File_Name IN VARCHAR2 ,PC$SQL_Order IN VARCHAR2 ,PB$Raise IN BOOLEAN DEFAULT FALSE ) -- ------------------------------------------- -- Procedure to dump a BLOB column onto a file -- ------------------------------------------- -- parameters: -- PC$Directory : name of an existing Oracle Directory -- PC$File_Name : name of the expected output file -- PC$SQL_Order : SQL order to select the BLOB column -- PB$Raise : boolean to indicate if the process -- would be stopped after an error -- IS src_lob BLOB; buffer RAW(16384); amt BINARY_INTEGER := 16384; pos INTEGER := 1; LF$FicOUT UTL_FILE.FILE_TYPE ; LC$Msg VARCHAR2(2000) ; BEGIN -- get the BLOB column -- BEGIN EXECUTE IMMEDIATE PC$SQL_Order INTO src_lob ; EXCEPTION WHEN NO_DATA_FOUND THEN LC$Msg := 'Write_Binary_File(): NO_DATA_FOUND' ; IF PB$Raise THEN RAISE_APPLICATION_ERROR( -20100, LC$Msg ) ; END IF ; Dbms_Output.Put_Line(LC$Msg) ; RETURN ; END ; -- open the output file -- LF$FicOUT := UTL_FILE.FOPEN( PC$Directory, PC$File_Name, 'W', 32764 ) ; -- write the file -- LOOP -- read the chunks -- Dbms_Lob.READ (src_lob, amt, pos, buffer); -- write the chunks -- Utl_File.Put_Raw(LF$FicOut, buffer); pos := pos + amt; END LOOP; -- close the file -- Utl_File.Fclose(LF$FicOut); EXCEPTION WHEN NO_DATA_FOUND THEN utl_file.fclose(LF$FicOut); WHEN OTHERS THEN LC$Msg := 'Write_Binary_File() Error : ' || TO_CHAR( SQLCODE ) || ' while managing file (' || PC$Directory || ') ' || PC$File_Name ; IF PB$Raise THEN RAISE_APPLICATION_ERROR( -20100, LC$Msg ) ; END IF ; Dbms_Output.Put_Line(LC$Msg); END Write_Binary_file; / |
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BEGIN Write_Binary_file ( 'OUTPUT_DIRECTORY' ,'image.jpg' ,'select image from images where id=3' ); END; |
