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卸载Oracle Database 12c

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与繁琐复杂的安装过程正相反，Oracle Database 12c的卸载过程非常简单，只需要执行一个shell脚本，就可以完成卸载过程。

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# 首先以oracle用户登陆到服务器上

# 进入卸载脚本所在目录
$ cd $ORACLE_HOME/deinstall

# 执行卸载脚本
$ ./deinstall

接下来按照脚本提示进行卸载过程

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Checking for required files and bootstrapping ...
Please wait ...
Location of logs /opt/oracle/app/oraInventory/logs/

############ ORACLE DECONFIG TOOL START ############


######################### DECONFIG CHECK OPERATION START #########################
## [START] Install check configuration ##


Checking for existence of the Oracle home location /opt/oracle/app/oracle/product/12.2.0_2/dbhome_1
Oracle Home type selected for deinstall is: Oracle Single Instance Database
Oracle Base selected for deinstall is: /opt/oracle/app/oracle
Checking for existence of central inventory location /opt/oracle/app/oraInventory

## [END] Install check configuration ##


Network Configuration check config START

Network de-configuration trace file location: /opt/oracle/app/oraInventory/logs/netdc_check2018-08-22_04-12-12-PM.log

# 输入要卸载的监听器名
Specify all Single Instance listeners that are to be de-configured. Enter .(dot) to deselect all. [LISTENER]: <回车>

Network Configuration check config END

Database Check Configuration START

Database de-configuration trace file location: /opt/oracle/app/oraInventory/logs/databasedc_check2018-08-22_04-16-17-PM.log

Use comma as separator when specifying list of values as input

# 输入在当前Oracle home下配置的数据库名
Specify the list of database names that are configured in this Oracle home [orcldb]: <回车>

###### For Database 'orcldb' ######

# 自动检测到的这个数据库的信息
Single Instance Database
The diagnostic destination location of the database: /opt/oracle/app/oracle/diag/rdbms/orcldb
Storage type used by the Database: FS
Database file location: /opt/oracle/app/oracle/oradata/orcldb
Fast recovery area location: Does not exist
database spfile location: /opt/oracle/app/oracle/product/12.2.0_2/dbhome_1/dbs/spfileorcldb.ora

# 询问是否要修改以上信息
The details of database(s) orcldb have been discovered automatically. Do you still want to modify the details of orcldb database(s)? [n]:

Database Check Configuration END
Oracle Configuration Manager check START
OCM check log file location : /opt/oracle/app/oraInventory/logs//ocm_check2396.log
Oracle Configuration Manager check END

######################### DECONFIG CHECK OPERATION END #########################


####################### DECONFIG CHECK OPERATION SUMMARY #######################
Oracle Home selected for deinstall is: /opt/oracle/app/oracle/product/12.2.0_2/dbhome_1
Inventory Location where the Oracle home registered is: /opt/oracle/app/oraInventory
Following Single Instance listener(s) will be de-configured: LISTENER
The following databases were selected for de-configuration : orcldb
Database unique name : orcldb
Storage used : FS
Checking the config status for CCR
Oracle Home exists with CCR directory, but CCR is not configured
CCR check is finished

# 输入"y"继续
Do you want to continue (y - yes, n - no)? [n]: y
A log of this session will be written to: '/opt/oracle/app/oraInventory/logs/deinstall_deconfig2018-08-22_04-12-09-PM.out'
Any error messages from this session will be written to: '/opt/oracle/app/oraInventory/logs/deinstall_deconfig2018-08-22_04-12-09-PM.err'

######################## DECONFIG CLEAN OPERATION START ########################
Database de-configuration trace file location: /opt/oracle/app/oraInventory/logs/databasedc_clean2018-08-22_04-22-04-PM.log
Database Clean Configuration START orcldb
This operation may take few minutes.
Database Clean Configuration END orcldb

Network Configuration clean config START

Network de-configuration trace file location: /opt/oracle/app/oraInventory/logs/netdc_clean2018-08-22_04-26-53-PM.log

De-configuring Single Instance listener(s): LISTENER

De-configuring listener: LISTENER
    Stopping listener: LISTENER
    Warning: Failed to stop listener. Listener may not be running.
    Deleting listener: LISTENER
    Listener deleted successfully.
Listener de-configured successfully.

De-configuring Naming Methods configuration file...
Naming Methods configuration file de-configured successfully.

De-configuring Local Net Service Names configuration file...
Local Net Service Names configuration file de-configured successfully.

De-configuring backup files...
Backup files de-configured successfully.

The network configuration has been cleaned up successfully.

Network Configuration clean config END

Oracle Configuration Manager clean START
OCM clean log file location : /opt/oracle/app/oraInventory/logs//ocm_clean2396.log
Oracle Configuration Manager clean END

######################### DECONFIG CLEAN OPERATION END #########################


####################### DECONFIG CLEAN OPERATION SUMMARY #######################
Successfully de-configured the following database instances : orcldb
Following Single Instance listener(s) were de-configured successfully: LISTENER
Cleaning the config for CCR
As CCR is not configured, so skipping the cleaning of CCR configuration
CCR clean is finished
#######################################################################


############# ORACLE DECONFIG TOOL END #############

Using properties file /tmp/deinstall2018-08-22_04-10-49PM/response/deinstall_2018-08-22_04-12-09-PM.rsp
Location of logs /opt/oracle/app/oraInventory/logs/

############ ORACLE DEINSTALL TOOL START ############





####################### DEINSTALL CHECK OPERATION SUMMARY #######################
A log of this session will be written to: '/opt/oracle/app/oraInventory/logs/deinstall_deconfig2018-08-22_04-12-09-PM.out'
Any error messages from this session will be written to: '/opt/oracle/app/oraInventory/logs/deinstall_deconfig2018-08-22_04-12-09-PM.err'

######################## DEINSTALL CLEAN OPERATION START ########################
## [START] Preparing for Deinstall ##
Setting LOCAL_NODE to boris-x200
Setting CRS_HOME to false
Setting oracle.installer.invPtrLoc to /tmp/deinstall2018-08-22_04-10-49PM/oraInst.loc
Setting oracle.installer.local to false

## [END] Preparing for Deinstall ##

Setting the force flag to false
Setting the force flag to cleanup the Oracle Base
Oracle Universal Installer clean START

Detach Oracle home '/opt/oracle/app/oracle/product/12.2.0_2/dbhome_1' from the central inventory on the local node : Done

Delete directory '/opt/oracle/app/oracle/product/12.2.0_2/dbhome_1' on the local node : Done

The Oracle Base directory '/opt/oracle/app/oracle' will not be removed on local node. The directory is in use by Oracle Home '/opt/oracle/app/oracle/product/12.2.0/dbhome_1'.

Oracle Universal Installer cleanup was successful.

Oracle Universal Installer clean END


## [START] Oracle install clean ##


## [END] Oracle install clean ##


######################### DEINSTALL CLEAN OPERATION END #########################


####################### DEINSTALL CLEAN OPERATION SUMMARY #######################
Successfully detached Oracle home '/opt/oracle/app/oracle/product/12.2.0_2/dbhome_1' from the central inventory on the local node.
Successfully deleted directory '/opt/oracle/app/oracle/product/12.2.0_2/dbhome_1' on the local node.
Oracle Universal Installer cleanup was successful.

Review the permissions and contents of '/opt/oracle/app/oracle' on nodes(s) 'boris-x200'.
If there are no Oracle home(s) associated with '/opt/oracle/app/oracle', manually delete '/opt/oracle/app/oracle' and its contents.
Oracle deinstall tool successfully cleaned up temporary directories.
#######################################################################


############# ORACLE DEINSTALL TOOL END #############

最后根据上面DEINSTALL CLEAN OPERATION SUMMARY段的提示，删除相关目录。

至此Oracle Database 12c的卸载过程完成。