How can I solve out of memory error on excell file in PL/SQL

Question

Hi,
I'm new on PL/SQL. One of the PL/SQL code which is created excell report got out of Memory error. The first reason of this error, excell file not supported more than 65536 data. So I change the excell file separeted sheets. So that the single sheet size cannot exceed 65536 data.
All the data are held on system cach and if many user want to take the report the they would get an out of memory error.
So I want to change the code like that; when out of memory exception raises,
the old excell file save to disk and new excell file is created,
and go on to write the new file without exiting the program.
At the end of the data all the excell file append and show only one file to the user.
I do know how to save the file and create a new file. But I don't know how can PL/SQL program to turn back to loop again when the exception occurs.
Is anyone help me on this issue?
Here is my code
Thank you
dworkbook:=hssfworkbook.new;
dCurrentItem := Get_Block_Property(pCurrentBlock, FIRST_ITEM);     
while not (name_in('system.last_record')='TRUE') loop
/* The data would be written to the excell file column order. */
if (dRow=0) then
          /* Create a new sheet */
elsif (dRow <= dMaxWorksheetNum) then
     /* Data of the report are written here. The data are written in column order */
if (dRow > dMaxWorksheetNum) then
     /* give dRow and dColumn intial value */
/* increase worksheet number */
end if; /* End of if (dRow=1) */
if (isWritten) and not name_in('system.last_record')='TRUE'then
     /* if not at the end of the record and the previously read record is written to the file
     , then go to next record */
     next_record;
end if;
/* save excell report */
workbookwriter.save(dworkbook,global.gethome||dFileName);
web.show_document('/users/'||dFileName,'_BLANK');
/* when exceptions occurs */
EXCEPTION
WHEN ORA_JAVA.EXCEPTION_THROWN THEN
begin
     javaException := ORA_JAVA.LAST_EXCEPTION;
     -- Print out the Exception by using the toString()
     -- Method of the exception Object
     javaException2 := Exception_.new(javaException);
     mess(27002,Exception_.getMessage(javaException2));
     -- and clean up
     ORA_JAVA.CLEAR_EXCEPTION;
exception
     WHEN ORA_JAVA.JAVA_ERROR THEN
-- In this case, the error would be
-- Argument 1 can not be null
mess(27002,ORA_JAVA.LAST_ERROR);
--Clean up
ORA_JAVA.CLEAR_ERROR;
end;
WHEN ORA_JAVA.JAVA_ERROR THEN
-- In this case, the error would be
-- Argument 1 can not be null
message(ORA_JAVA.LAST_ERROR);
--Clean up
ORA_JAVA.CLEAR_ERROR;

Answer 1

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