Her er en anden tilgang:
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Brug af
BFILE
ogfileexists
funktion afdbms_lob
pakke:create or replace function FileExists( p_DirName in varchar2, -- schema object name p_FileName in varchar2 ) return number is l_file_loc bfile; begin l_file_loc := bfilename(upper(p_DirName), p_FileName); return dbms_lob.fileexists(l_file_loc); -- 1 exists; 0 - not exists end;
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Brug af
fgetattr
funktion afutl_file
pakke:create or replace function FileExists( p_DirName in varchar2, -- schema object name p_FileName in varchar2 ) return number is l_fexists boolean; l_flen number; l_bsize number; l_res number(1); begin l_res := 0; utl_file.fgetattr(upper(p_DirName), p_FileName, l_fexists, l_flen, l_bsize); if l_fexists then l_res := 1; end if; return l_res; end;