Oracle官方推荐使用专门的删除工具。原因是内置的deinstall工具脚本中常常带有很多bug，很多时候不能完全的将其删除干净。特别是Windows环境下的卸载工具，不能正常工作的场景很多。
上传工具包至服务器，直接解压，解压完毕后即可直接使用。
[oracle@localhost ~]$ unzip p13390677_112040_Linux-x86-64_7of7.zip
[oracle@localhost ~]$ cd deinstall/
[oracle@localhost deinstall]$ ./deinstall -help
deinstall -home <Complete path of Oracle home>
[ -silent ]
[ -checkonly ]
[ -local ]
[ -paramfile <complete path of input parameter properties file> ]
[ -params <name1=value[ name2=value name3=value ...]> ]
[ -o <complete path of directory for saving files> ]
[ -tmpdir <complete path of temporary directory to use> ]
[ -logdir <complete path of log directory to use> ]
[ -help : Type -help to get more information on each of the above options. ]
删除Oracle
[oracle@localhost deinstall]$ ./deinstall -home $ORACLE_HOME
Location of logs /home/oracle/deinstall/./logs/
############ ORACLE DEINSTALL & DECONFIG TOOL START ############
######################### CHECK OPERATION START #########################
## [START] Install check configuration ##
Checking for existence of the Oracle home location /u01/app/oracle/product/11.2.0/db_1
Oracle Home type selected for deinstall is: Oracle Single Instance Database
Oracle Base selected for deinstall is: /u01/app/oracle
Checking for existence of central inventory location /u01/app/oraInventory
Checking for sufficient temp space availability on node(s) : 'localhost.localdomain'
## [END] Install check configuration ##
Network Configuration check config START
Network de-configuration trace file location: /home/oracle/deinstall/./logs/netdc_check2015-08-22_12-34-54-AM.log
Network Configuration check config END
Database Check Configuration START
Database de-configuration trace file location: /home/oracle/deinstall/./logs/databasedc_check2015-08-22_12-35-03-AM.log
Use comma as separator when specifying list of values as input
Specify the list of database names that are configured in this Oracle home []: orcl
###### For Database 'orcl' ######
Specify the type of this database (1.Single Instance Database|2.Oracle Restart Enabled Database) [1]:
Specify the diagnostic destination location of the database [/u01/app/oracle/diag/rdbms/orcl]:
Specify the storage type used by the Database ASM|FS []: FS