oracle转储

oracle  根据rowid得到行所在的对象号，数据文件号，块号，行编号。 

DBMS_ROWID.ROWID_OBJECT(ROWID) OBJECT_ID,

　　　 DBMS_ROWID.ROWID_RELATIVE_FNO(ROWID) FILE_ID,

　　　 DBMS_ROWID.ROWID_BLOCK_NUMBER(ROWID) BLOCK_ID,

　　　 DBMS_ROWID.ROWID_ROW_NUMBER(ROWID) NUM,