oracle text 全文索引（url文件和外部文件）

BEGIN
ctx_ddl.drop_preference('career_file_prefs');
END;
BEGIN
ctx_ddl.create_preference (
'career_file_prefs',
'URL_DATASTORE'
) ; 
END ; 


//在sys下運行
conn SYS/MANAGER as sysdba
execute ctxsys.ctx_adm.set_parameter('FILE_ACCESS_ROLE','public');
//刪除索引
drop index doc_career_files
//創建索引
create index doc_career_files on SRA.INDEX_CAREER_FILES(FILES)
  indextype is  CTXSYS.CONTEXT
  parameters ('lexer MYLEXER
Filter ctxsys.inso_filter
               datastore career_file_prefs');


//同步索引
begin
ctx_ddl.sync_index('doc_career_files');
end;


SELECT CAREER_ID FROM SRA.INDEX_CAREER_FILES WHERE contains(FILES, '王婷婷')>0