知识大全 热备异常关闭的恢复

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  实验一 热备异常结束的恢复

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME                                              REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> select * from t ;

  SCN

  

  

  SQL> insert into t values (dbms_flashback get_system_change_number);

  已创建 行

  SQL> select * from t ;

  SCN

  

  

  

  SQL> mit;

  提交完成

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME                                              REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME                                              CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> select checkpoint_change# from v$database;

  CHECKPOINT_CHANGE#

  

  

   热备前几个检查点信息是一致的

  SQL> alter tablespace tbs_test begin backup;

  表空间已更改

  SQL> select checkpoint_change# from v$database;

  CHECKPOINT_CHANGE#

  

  

   热备启动后 可以看到tbs_test空间的两个数据文件检查点比其他文件大 因为在热备启动的时候对这两个文件做了检查点

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME                                              CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME                                              REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> host copy D:\\TBS _ DBF to D:\\TBS _ DBF bak

  SQL> host copy D:\\TBS _ DBF to D:\\TBS _ DBF bak ;

  SQL> host copy D:\\TBS _ DBF   D:\\TBS _ DBF bak ;

  SQL> host copy D:\\TBS _ DBF  D:\\TBS _ DBF bak

  SQL> host copy D:\\TBS _ DBF  D:\\TBS _ DBF bak

  SQL> shutdown abort

  ORACLE 例程已经关闭

  SQL> startup mount

  ORA : obsolete and/or deprecated parameter(s) specified

  ORACLE 例程已经启动

  Total System Global Area  bytes

  Fixed Size                  bytes

  Variable Size             bytes

  Database Buffers          bytes

  Redo Buffers                bytes

  数据库装载完毕

   shutdown abort没有做检查点 所有可以看到再次mount后 检查点还是和关闭前保持一致

  CHECKPOINT_CHANGE#不一致 这个是需要恢复的

  V$RECOVER_FILE里有 但V$DATAFILE_HEADER里没有提示rec=yes

  这是因为两个的信息来自不同的地方

  需要恢复 这个信息V$RECOVER_FILE来自控制文件的知道了 但V$DATAFILE_HEADER来自数据文件头的还不知道

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME                                              REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME                                              CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> select * from v$recover_file;

  FILE# ONLINE  ONLINE_ ERROR           CHANGE# TIME

  

   ONLINE  ONLINE                  月

   ONLINE  ONLINE                  月

  SQL> select * from v$backup;

  FILE# STATUS                CHANGE# TIME

  

   NOT ACTIVE            月

   NOT ACTIVE            月

   NOT ACTIVE            月

   NOT ACTIVE            月

   NOT ACTIVE            月

   NOT ACTIVE            月

   NOT ACTIVE            月

   ACTIVE                月

   ACTIVE                月

   NOT ACTIVE            月

  已选择 行

  SQL> alter database end backup;

  数据库已更改

   结束热备后 系统自动恢复了

  SQL> select * from v$recover_file;

  未选定行

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME                                              CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME                                              REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> alter database open;

  数据库已更改

   打开数据库 所有检查点一致 cnt加了 (open加 切归档+ )

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME                                              CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\TBS _ DBF                                                                            ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME                                              REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\TBS _ DBF                                     NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> spool off

  实验二 热备后异常关闭 用旧备份还原

  SQL>  select * from v$log;

  GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIME

  

                                   YES INACTIVE               月

                                   NO  CURRENT                月

                                   YES INACTIVE               月

  SQL> select * from t ;

  SCN

  

  

  

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME   REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF   NO  YES                          

  D:\\TBS _ DBF   NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME   CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                             ONLINE

  D:\\TBS _ DBF                             ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> alter tablespace tbs_test begin backup;

  表空间已更改

  SQL> select substr(name ) dname CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# status from v$datafile;

  DNAME   CHECKPOINT_CHANGE# LAST_CHANGE# OFFLINE_CHANGE# STATUS

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                                                  SYSTEM

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                                                  ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                   ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                                                 ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                                                         ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                                                    ONLINE

  D:\\TBS _ DBF                             ONLINE

  D:\\TBS _ DBF                             ONLINE

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF                                             ONLINE

  已选择 行

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME   REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

  D:\\ORACLE\\ORADATA\\FOX\\SYSTEM DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\UNDOTBS DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\SYSAUX DBF                 NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\EXAMPLE DBF                NO  YES                         

  D:\\ORACLE\\ORADATA\\FOX\\USERS DBF                  NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST DBF                   NO  YES                          

  D:\\TBS _ DBF   NO  YES                          

  D:\\TBS _ DBF   NO  YES                          

  D:\\ORACLE\\ORADATA\\FOX\\TEST_PERFSTAT DBF            NO  YES                         

  已选择 行

  SQL>  select * from v$log;

  GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIME

  

                                   YES INACTIVE               月

                                   NO  CURRENT                月

                                   YES INACTIVE               月

  SQL> shutdown abort

  ORACLE 例程已经关闭

  SQL> startup mount;

  ORA : obsolete and/or deprecated parameter(s) specified

  ORACLE 例程已经启动

  Total System Global Area  bytes

  Fixed Size                  bytes

  Variable Size             bytes

  Database Buffers          bytes

  Redo Buffers                bytes

  数据库装载完毕

  SQL>  select * from v$log;

  GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIME

  

                                   YES INACTIVE               月

                                   YES INACTIVE               月

                                   NO  CURRENT                月

  SQL> select substr(name ) dname recover fuzzy checkpoint_change# CHECKPOINT_COUNT from v$datafile_header;

  DNAME   REC FUZ CHECKPOINT_CHANGE# CHECKPOINT_COUNT

  

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