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1#
发表于 2014-4-3 09:58:06
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本帖最后由 chaicsd14 于 2014-4-3 09:58 编辑
OS:Red Hat Enterprise Linux Server release 5.5 (Tikanga)
oracle:11.2.0.3
在RAC环境下测试:- SQL> / as sysdba
- Connected.
- SQL> create table t (id number,name char(10));
- Table created.
- SQL> insert into t values (1,'chai');
- 1 row created.
- SQL> commit;
- Commit complete.
- SQL> alter system checkpoint;
- System altered.
- SQL> Select Dbms_Rowid.Rowid_Object(Rowid) Object_Id,
- 2 Dbms_Rowid.Rowid_Relative_Fno(Rowid) File_Id,
- 3 Dbms_Rowid.Rowid_Block_Number(Rowid) Block_Id,
- 4 Dbms_Rowid.Rowid_Row_Number(Rowid) Num
- 5 From wilson.t
- 6
- SQL> /
- OBJECT_ID FILE_ID BLOCK_ID NUM
- ---------- ---------- ---------- ----------
- 79149 4 229 0
- SQL> alter system dump datafile 4 block 229;
- System altered.
- SQL> oradebug setmysid;
- ORA-00070: command setmysid is not valid
- SQL> oradebug setmypid;
- Statement processed.
- SQL> oradebug tracefile_name;
- /u01/app/oracle/diag/rdbms/orcl/orcl2/trace/orcl2_ora_4851.trc
- cat /u01/app/oracle/diag/rdbms/orcl/orcl2/trace/orcl2_ora_4851.trc
- Itl Xid Uba Flag Lck Scn/Fsc
- 0x01 0x0003.00a.000008db 0x00c00682.0445.0f C--- 0 scn 0x0000.015bd2aa
- 0x02 0x0000.000.00000000 0x00000000.0000.00 ---- 0 fsc 0x0000.00000000
复制代码 锁已经被清除掉了
在单实例上操作:- SQL> create table wilson.t (id number,name varchar2(10));
- Table created.
- SQL> insert into wilson.t values(1,'cyx');
- 1 row created.
- SQL> commit;
- Commit complete.
- SQL> Select Dbms_Rowid.Rowid_Object(Rowid) Object_Id,
- 2 Dbms_Rowid.Rowid_Relative_Fno(Rowid) File_Id,
- 3 Dbms_Rowid.Rowid_Block_Number(Rowid) Block_Id,
- 4 Dbms_Rowid.Rowid_Row_Number(Rowid) Num
- 5 From wilson.t;
- OBJECT_ID FILE_ID BLOCK_ID NUM
- ---------- ---------- ---------- ----------
- 75591 4 204 0
- SQL> alter system checkpoint;
- System altered.
- SQL> alter system dump datafile 4 block 204;
- System altered.
- SQL> oradebug setmypid;
- Statement processed.
- SQL> oradebug tracefile_name;
- /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_13426.trc
- cat /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_13426.trc
- Itl Xid Uba Flag Lck Scn/Fsc
- 0x01 0x0004.018.000002a5 0x00c01814.008a.0f --U- 1 fsc 0x0000.000fd9d5
- 0x02 0x0000.000.00000000 0x00000000.0000.00 ---- 0 fsc 0x0000.00000000
复制代码 锁资源还保留着
请教下各位老师,这两者之间的机制有什么不同吗? |
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