OPEN

打开一个LOB

声明

DBMS_LOB.OPEN (
   lob_loc   IN OUT NOCOPY BLOB,
   open_mode IN            BINARY_INTEGER);

DBMS_LOB.OPEN (
   lob_loc   IN OUT NOCOPY CLOB ,
   open_mode IN            BINARY_INTEGER);

DBMS_LOB.OPEN (
   file_loc  IN OUT NOCOPY BFILE,
   open_mode IN            BINARY_INTEGER := file_readonly);

结构

参数	说明
lob_loc	定位器
open_mode	打开模式LOB_READWRITE or LOB_LOB_READONLY 对于BFILE类型只能FILE_READONLY