ORACLEclob转换成Blob类型 ORACLE 10G R2上 测试通过。 CREATE OR REPLACE FUNCTION C2B (b IN CLOB default empty_clob()) RETURN BLOB -- typecasts BLOB to CLOB (binary conversion) IS res BLOB; b_len number := dbms_lob.getlength(b) ; dest_offset1 NUMBER := 1; src_offset1 NUMBER := 1; amount_c INTEGER := DBMS_LOB.lobmaxsize; blob_csid NUMBER := DBMS_LOB.default_csid; lang_ctx INTEGER := DBMS_LOB.default_lang_ctx; warning INTEGER; BEGIN if b_len 》 0 then DBMS_LOB.createtemporary (res, TRUE); DBMS_LOB.OPEN (res, DBMS_LOB.lob_readwrite); DBMS_LOB.convertToBlob (res, b, amount_c, dest_offset1, src_offset1, blob_csid, lang_ctx, warning ); else select empty_blob() into res from dual ; end if ; RETURN res; -- res is OPEN here END C2B;