Oracle11g 11.2.0.3升级失败后的两种回退方法

升级环境：

1、 11.2.0.1 to RAC 11.2.0.2RAC

2、RAC 11.2.0.1 to RAC 11.2.0.3

3、RAC 11.2.0.2 to RAC 11.2.0.3

以上DB软件均是通过out-of-place upgrade方法升级。

如果在升级完成后，发现升级过程有问题，需要回退，我们可以选择两种回退办法：
1. 通过闪回的办法还原到11.2.0.1 /11.2.0.3的数据库
2. 执行catdwgrd.sql 降级数据字典数据库

以下我们介绍通过闪回数据库的办法还原到11.2.0.1 /11.2.0.3的数据库

关于执行catdwgrd.sql 降级数据字典详见：How To Downgrade From Database 11.2 To Previous Release (includes 11.2.0.3-11.2.0.1) [ID883335.1]

一、检查已升级的数据库版本（11.2.0.3）

备注：

我们在升级11.2.0.3的数据字典之前已经做了数据库的闪回点

create restore point upgrade_rollback guarantee  database;flashback

SQL> SELECT NAME, SCN, TIME, DATABASE_INCARNATION#, GUARANTEE_FLASHBACK_DATABASE, STORAGE_SIZE  FROM V$RESTORE_POINT WHERE GUARANTEE_FLASHBACK_DATABASE='YES';  

NAME
--------------------------------------------------------------------------------
       SCN
----------
TIME
---------------------------------------------------------------------------
DATABASE_INCARNATION# GUA STORAGE_SIZE
--------------------- --- ------------
UPGRADE_ROLLBACK
   1227989
31-MAR-12 10.21.06.000000000 AM
                    1 YES     16384000

检查版本信息

SQL> select * from global_name;

GLOBAL_NAME
--------------------------------------------------------------------------------
RACDB

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
 Database  Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production11gOracle

SQL> col COMP_ID format a10
SQL> col COMP_NAME format a30
SQL> select comp_id,comp_name,version,status,modified from dba_registry

SQL> /

COMP_ID    COMP_NAME                      VERSION                        STATUS                 MODIFIED
---------- ------------------------------ ------------------------------ ---------------------- -----------------------
APEX       Oracle Application Express     3.2.1.00.12                    INVALID                31-MAR-2012 12:04:14
EM         Oracle Enterprise Manager      11.2.0.3.0                     VALID                  31-MAR-2012 11:36:51
ORDIM      Oracle Multimedia              11.2.0.3.0                     VALID                  31-MAR-2012 12:04:14
XDB        Oracle XML Database            11.2.0.3.0                     VALID                  31-MAR-2012 12:04:13
EXF        Oracle Expression Filter       11.2.0.3.0                     VALID                  31-MAR-2012 12:04:12
RUL        Oracle Rules Manager           11.2.0.3.0                     VALID                  31-MAR-2012 12:04:13
OWM        Oracle Workspace Manager       11.2.0.3.0                     VALID                  31-MAR-2012 12:04:11
CATALOG    Oracle Database Catalog Views  11.2.0.3.0                     VALID                  31-MAR-2012 12:04:11
CATPROC    Oracle Database Packages and T 11.2.0.3.0                     VALID                  31-MAR-2012 12:04:11
           ypes

JAVAVM     JServer JAVA Virtual Machine   11.2.0.3.0                     VALID                  31-MAR-2012 12:04:11
XML        Oracle XDK                     11.2.0.3.0                     VALID                  31-MAR-2012 12:04:11
CATJAVA    Oracle Database Java Packages  11.2.0.3.0                     VALID                  31-MAR-2012 12:04:11
RAC        Oracle Real Application Cluste 11.2.0.3.0                     VALID                  31-MAR-2012 12:04:14
           rs

13 rows selected.

 

二、回退过程（to 11.2.0.2）

1、关闭RAC所有节点的实例

2、在所有节点上关闭数据库实例，并在一个节点上启动数据库到mount模式进行闪回。

$ sqlplus / as sysdba
SQL> startup mount;
SQL> SELECT NAME, SCN, TIME, DATABASE_INCARNATION#, GUARANTEE_FLASHBACK_DATABASE, STORAGE_SIZE  FROM V$RESTORE_POINT WHERE GUARANTEE_FLASHBACK_DATABASE='YES';

NAME
--------------------------------------------------------------------------------
       SCN
----------
TIME
---------------------------------------------------------------------------
DATABASE_INCARNATION# GUA STORAGE_SIZE
--------------------- --- ------------
UPGRADE_ROLLBACK
   1227989
31-MAR-12 10.21.06.000000000 AM
                    1 YES    910868480
 

SQL> flashback database to restore point UPGRADE_ROLLBACK;
Flashback complete.

SQL> alter database open resetlogs;
Database altered.

SQL> shutdown immediate;

3 、使用srvctl命令更新ocr中DBHOME相关信息

$ su - oracle
%srvctl upgrade database -d racdb -o $NEW_ORACLE_HOME

$ srvctl upgrade database -d racdb -o /oracle/app/oracle/product/11.2.0

$ srvctl config database -d racdb

4、更环境变量到11.2.0及pfile等。

5、启动数据库：

6、 检查版本信息

SQL> select * from global_name;

GLOBAL_NAME
--------------------------------------------------------------------------------
RACDB

SQL> select * from v$version;

SQL> col COMP_ID format a10
SQL> col COMP_NAME format a30
SQL> select comp_id,comp_name,version,status,modified from dba_registry

 

SQL> select * from global_name;

GLOBAL_NAME
--------------------------------------------------------------------------------
RACDB

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE    11.2.0.2.0      Production
TNS for IBM/AIX RISC System/6000: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production

SQL> col COMP_ID format a10
SQL> col COMP_NAME format a30
SQL> select comp_id,comp_name,version,status,modified from dba_registry
  2  ;

COMP_ID    COMP_NAME                      VERSION
---------- ------------------------------ ------------------------------
STATUS                 MODIFIED
---------------------- -----------------------
APEX       Oracle Application Express     3.2.1.00.12
INVALID                29-MAR-2012 19:53:42

EM         Oracle Enterprise Manager      11.2.0.2.0
VALID                  29-MAR-2012 19:34:52

ORDIM      Oracle Multimedia              11.2.0.2.0
VALID                  29-MAR-2012 19:24:12

COMP_ID    COMP_NAME                      VERSION
---------- ------------------------------ ------------------------------
STATUS                 MODIFIED
---------------------- -----------------------
XDB        Oracle XML Database            11.2.0.2.0
VALID                  29-MAR-2012 19:12:54

EXF        Oracle Expression Filter       11.2.0.2.0
VALID                  29-MAR-2012 19:09:10

RUL        Oracle Rules Manager           11.2.0.2.0
VALID                  29-MAR-2012 19:13:49

COMP_ID    COMP_NAME                      VERSION
---------- ------------------------------ ------------------------------
STATUS                 MODIFIED
---------------------- -----------------------
OWM        Oracle Workspace Manager       11.2.0.2.0
VALID                  29-MAR-2012 18:56:43

CATALOG    Oracle Database Catalog Views  11.2.0.2.0
VALID                  29-MAR-2012 18:55:11

CATPROC    Oracle Database Packages and T 11.2.0.2.0
           ypes
VALID                  29-MAR-2012 18:55:11

COMP_ID    COMP_NAME                      VERSION
---------- ------------------------------ ------------------------------
STATUS                 MODIFIED
---------------------- -----------------------

JAVAVM     JServer JAVA Virtual Machine   11.2.0.2.0
VALID                  29-MAR-2012 19:06:30

XML        Oracle XDK                     11.2.0.2.0
VALID                  29-MAR-2012 19:08:00

CATJAVA    Oracle Database Java Packages  11.2.0.2.0
VALID                  29-MAR-2012 19:08:34

COMP_ID    COMP_NAME                      VERSION
---------- ------------------------------ ------------------------------
STATUS                 MODIFIED
---------------------- -----------------------

RAC        Oracle Real Application Cluste 11.2.0.2.0
           rs
VALID                  29-MAR-2012 19:58:08

13 rows selected.

完成回退。