环境

1OS: CentOS 7.4; hosts: L134; IP: 192.168.1.134  
2Oracle安装文件目录：/opt/oracle_install  
3ORACLE_BASE：/data/app/oracle  
4ORACLE_HOME: /data/app/oracle/product/11.2.0/db_1  
5oraInventory: /data/app/oraInventory  
6Oracle数据目录：/data/app/oradata/

方法1：使用oracle自带的deinstall卸载

1[oracle@L134 ~]$ cd $ORACLE_HOME/deinstall
2[oracle@L134 /data/app/oracle/product/11.2.0/db_1/deinstall]$ ./deinstall 
3

然后根据提示一步一步进行操作即可。最后一步是确认操作，选择y，回车。

Do you want to continue (y - yes, n - no)? [n]: y

最后还要需要以root身份删除/etc/oraInst.loc这个文件。我觉得方法2删除更方便更彻底。

方法2：手动删除相关文件和目录

关闭实例

sqlplus / as sysdba SQL> shutdown immediate
关闭listener

lsnrctl stop
删除安装目录

su - rm -rf /data/app/oracle/ /data/app/oraInventory/ /data/app/oradata/
以root权限删除/usr/bin下的相关文件。下周

cd /usr/local/bin/ rm -f dbhome oraenv coraenv
删除/etc/oratab

rm -f /etc/oratab
删除

rm -f /etc/oraInst.loc
删除oracle用户和用户组（如有必要）

userdel -r oracle groupdel oinstall groupdel dba groupdel oper
删除启动服务

chkconfig --del oracle

扩展

oracle自带的deinstall卸载的提示和日志信息

1[oracle@L134 /data/oracle/11g2/deinstall]$ ./deinstall 
2Checking for required files and bootstrapping ...
3Please wait ...
4Location of logs /tmp/deinstall2018-03-08_08-53-24-AM/logs/
5
6############ ORACLE DEINSTALL & DECONFIG TOOL START ############
7
8
9######################## CHECK OPERATION START ########################
10Install check configuration START
11
12
13Checking for existence of the Oracle home location /data/app/oracle/product/11.2.0/db_1
14Oracle Home type selected for de-install is: SIDB
15Oracle Base selected for de-install is: /data/app/oracle
16Checking for existence of central inventory location /data/app/oraInventory
17
18Install check configuration END
19
20
21Network Configuration check config START
22
23Network de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/netdc_check1471463216126639250.log
24
25Specify all Single Instance listeners that are to be de-configured [LISTENER]:
26
27Network Configuration check config END
28
29Database Check Configuration START
30
31Database de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/databasedc_check5326208000777792237.log
32
33Use comma as separator when specifying list of values as input
34
35Specify the list of database names that are configured in this Oracle home [orclyz]: 
36
37###### For Database 'orclyz' ######
38
39Single Instance Database
40The diagnostic destination location of the database: /data/app/oracle/diag/rdbms/orclyz
41Storage type used by the Database: FS
42Database file location: /data/app/oracle/oradata/orclyz,/data/app/oracle/flash_recovery_area/orclyz
43Flash recovery area location: /data/app/oracle/flash_recovery_area/ORCLYZ
44database spfile location: /data/app/oracle/product/11.2.0/db_1/dbs/spfileorclyz.ora
45
46The details of database(s) orclyz have been discovered automatically. Do you still want to modify the details of orclyz database(s)? [n]: 
47
48Database Check Configuration END
49
50Enterprise Manager Configuration Assistant START
51
52EMCA de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/emcadc_check.log 
53
54Checking configuration for database orclyz
55Enterprise Manager Configuration Assistant END
56Oracle Configuration Manager check START
57OCM check log file location : /tmp/deinstall2018-03-08_08-53-24-AM/logs//ocm_check5456.log
58Oracle Configuration Manager check END
59
60######################### CHECK OPERATION END #########################
61
62
63####################### CHECK OPERATION SUMMARY #######################
64Oracle Home selected for de-install is: /data/app/oracle/product/11.2.0/db_1
65Inventory Location where the Oracle home registered is: /data/app/oraInventory
66Following Single Instance listener(s) will be de-configured: LISTENER
67The following databases were selected for de-configuration : orclyz
68Database unique name : orclyz
69Storage used : FS
70No Enterprise Manager configuration to be updated for any database(s)
71No Enterprise Manager ASM targets to update
72No Enterprise Manager listener targets to migrate
73Checking the config status for CCR
74Oracle Home exists with CCR directory, but CCR is not configured
75CCR check is finished
76Do you want to continue (y - yes, n - no)? [n]: y
77A log of this session will be written to: '/tmp/deinstall2018-03-08_08-53-24-AM/logs/deinstall_deconfig2018-03-08_08-53-33-AM.out'
78Any error messages from this session will be written to: '/tmp/deinstall2018-03-08_08-53-24-AM/logs/deinstall_deconfig2018-03-08_08-53-33-AM.err'
79
80######################## CLEAN OPERATION START ########################
81
82Enterprise Manager Configuration Assistant START
83
84EMCA de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/emcadc_clean.log 
85
86Updating Enterprise Manager ASM targets (if any)
87Updating Enterprise Manager listener targets (if any)
88Enterprise Manager Configuration Assistant END
89Database de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/databasedc_clean1081110075195191916.log
90Database Clean Configuration START orclyz
91This operation may take few minutes.
92Database Clean Configuration END orclyz
93
94Network Configuration clean config START
95
96Network de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/netdc_clean1072295666521765217.log
97
98De-configuring Single Instance listener(s): LISTENER
99
100De-configuring listener: LISTENER
101    Stopping listener: LISTENER
102    Listener stopped successfully.
103    Deleting listener: LISTENER
104    Listener deleted successfully.
105Listener de-configured successfully.
106
107De-configuring Naming Methods configuration file...
108Naming Methods configuration file de-configured successfully.
109
110De-configuring backup files...
111Backup files de-configured successfully.
112
113The network configuration has been cleaned up successfully.
114
115Network Configuration clean config END
116
117Oracle Configuration Manager clean START
118OCM clean log file location : /tmp/deinstall2018-03-08_08-53-24-AM/logs//ocm_clean5456.log
119Oracle Configuration Manager clean END
120Oracle Universal Installer clean START
121
122Detach Oracle home '/data/app/oracle/product/11.2.0/db_1' from the central inventory on the local node : Done
123
124Delete directory '/data/app/oracle/product/11.2.0/db_1' on the local node : Done
125
126Delete directory '/data/app/oraInventory' on the local node : Done
127
128Delete directory '/data/app/oracle' on the local node : Done
129
130Oracle Universal Installer cleanup was successful.
131
132Oracle Universal Installer clean END
133
134
135Oracle install clean START
136
137Clean install operation removing temporary directory '/tmp/install' on node 'PostalDataDG'
138
139Oracle install clean END
140
141
142######################### CLEAN OPERATION END #########################
143
144
145####################### CLEAN OPERATION SUMMARY #######################
146Successfully de-configured the following database instances : orclyz
147Following Single Instance listener(s) were de-configured successfully: LISTENER
148Cleaning the config for CCR
149As CCR is not configured, so skipping the cleaning of CCR configuration
150CCR clean is finished
151Successfully detached Oracle home '/data/app/oracle/product/11.2.0/db_1' from the central inventory on the local node.
152Successfully deleted directory '/data/app/oracle/product/11.2.0/db_1' on the local node.
153Successfully deleted directory '/data/app/oraInventory' on the local node.
154Successfully deleted directory '/data/app/oracle' on the local node.
155Oracle Universal Installer cleanup was successful.
156
157
158Run 'rm -rf /etc/oraInst.loc' as root on node(s) 'PostalDataDG' at the end of the session.
159
160Oracle install successfully cleaned up the temporary directories.
161#######################################################################
162
163
164############# ORACLE DEINSTALL & DECONFIG TOOL END #############
165

CentOS卸载Oracle 11gR2(x64)

环境

方法1：使用oracle自带的deinstall卸载

方法2：手动删除相关文件和目录

扩展

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