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前提：安装oracle软件后，完毕了dbca建库
目标：完毕oracle软件由10.2.0.1.0升级为10.2.0.5.0
1．查看数据库状态、版本号
[oracle@hyl ~]$ sqlplus '/as sysdba'
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Sep 17 18:27:42 2014
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> select instance_name,status from v$instance;
INSTANCE_NAME STATUS
---------------- --------------------
hyldb OPEN
SQL> select comp_name,version,status from dba_registry;
2. 解压安装包
找到oracle10g的升级安装包，例如以下所看到的：
解压压缩包
[root@hyl soft]# unzip p8202632_10205_Linux-x86-64.zip
3. 关闭数据库
[oracle@hyl ~]$ sqlplus '/as sysdba'
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Sep 29 10:23:51 2014
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> shutdown immediate;
--关库
Database closed.
Database dismounted.
ORACLE instance shut down.
[oracle@hyl ~]$ lsnrctl statuse
--核实监听已经停止
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 29-SEP-2014 10:30:51
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 29-SEP-2014 09:54:36
Uptime 0 days 0 hr. 36 min. 14 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Log File /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=hyl)(PORT=1521)))
The listener supports no services
The command completed successfully
4. 数据备份
生产环境时此处须要做一次备份。以免升级失败时造成数据丢失，此文省略。
5. 升级oracle软件
远程调用图形化界面。例如以下图例：
这里跳过需求包检查就可以，点击yes继续。例如以下图：
[root@hyl ~]# /u01/app/oracle/product/10.2.0/db_1/root.sh
--按提示运行脚本
Running Oracle 10g root.sh script...
The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME= /u01/app/oracle/product/10.2.0/db_1
Enter the full pathname of the local bin directory: [/usr/local/bin]:
The file "dbhome" already exists in /usr/local/bin. Overwrite it?
(y/n)
[n]: y
Copying dbhome to /usr/local/bin ...
The file "oraenv" already exists in /usr/local/bin. Overwrite it? (y/n)
[n]: y
Copying oraenv to /usr/local/bin ...
The file "coraenv" already exists in /usr/local/bin. Overwrite it?
(y/n)
[n]: y
Copying coraenv to /usr/local/bin ...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root.sh script.
Now product-specific root actions will be performed.
运行脚本后，点击界面ok。进入到结束界面，例如以下：
6. 升级数据库
[oracle@hyl ~]$ sqlplus '/as sysdba'
SQL*Plus: Release 10.2.0.5.0 - Production on Mon Sep 29 11:05:28 2014
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to an idle instance.
启动到upgrade状态
SQL> startup upgrade;
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 2094800 bytes
Variable Size 75499824 bytes
Database Buffers 83886080 bytes
Redo Buffers 6291456 bytes
Database mounted.
Database opened.
升级数据字典
SQL> spool /u01/app/oracle/update_log/cpu_up.log//把脚本信息录入到一个日志文件里
SQL> @?/rdbms/admin/catupgrd.sql //開始跑脚本。升级数据字典。约10分钟
SQL> spool off; --结束日志文件
SQL> shutdown immediate; --关库
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup --正常启库
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 2094800 bytes
Variable Size 150997296 bytes
Database Buffers 8388608 bytes
Redo Buffers 6291456 bytes
Database mounted.
Database opened.
SQL> @?/rdbms/admin/utlrp.sql --运行该脚本
SQL> select * from utl_recomp_errors;
SQL> col comp_name for a30
SQL> col status for a20
SQL> col VERSION for a10
SQL> set linesize 200
SQL> select comp_name,version,status from dba_registry;
SQL> show parameter comp
改动兼容性
SQL> alter system set compatible='10.2.0.5.0' scope=spfile;
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
至此。数据库完毕由10.2.0.1.0升级到10.2.0.5.0版本号。
7. 完毕
[oracle@hyl ~]$ sqlplus '/as sysdba'
--登陆数据库
SQL*Plus: Release 10.2.0.5.0 - Production on Mon Sep 29 11:57:49 2014
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
小结
对照dbca建库前后进行cpu升级的过程，会发现明显的差别：
1、未进行dbca建库，仅仅需进行软件升级，升级后建库就可以；
2、dbca建库后（即存在数据库的情况下），升级软件后。须要升级数据字典，改动兼容性。
简而记之
| cpu升级（10.2.0.1.0-10.2.0.5.0） | ||
| 条件 | 操作 | 兴许 |
| 不存在库 | 升级软件 | 兴许建库 |
| 存在库 | 升级软件+数据字典+兼容性 | 完毕升级后直接訪问库 |
***********************************************声明***********************************************************************
原创作品，出自 “深蓝的blog” 博客。欢迎转载，转载时请务必注明出处，否则追究版权法律责任。
表述有错误之处，请您留言或邮件（hyldba@163.com）指明，不胜感激。
本文转载必须保留此处：
深蓝的blog：
****************************************************************************************************************************