OS: CentOS 7.4; hosts: L134; IP: 192.168.1.134 Oracle安装文件目录：/opt/oracle_install ORACLE_BASE：/data/app/oracle ORACLE_HOME: /data/app/oracle/product/11.2.0/db_1 oraInventory: /data/app/oraInventory Oracle数据目录：/data/app/oradata/ [oracle@L134 ~]$ cd $ORACLE_HOME/deinstall[oracle@L134 /data/app/oracle/product/11.2.0/db_1/deinstall]$ ./deinstall 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。
sqlplus / as sysdbaSQL> 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 oraclegroupdel oinstallgroupdel dbagroupdel oper删除启动服务
chkconfig --del oracleoracle自带的deinstall卸载的提示和日志信息
[oracle@L134 /data/oracle/11g2/deinstall]$ ./deinstall Checking for required files and bootstrapping ...Please wait ...Location of logs /tmp/deinstall2018-03-08_08-53-24-AM/logs/############ ORACLE DEINSTALL & DECONFIG TOOL START #################################### CHECK OPERATION START ########################Install check configuration STARTChecking for existence of the Oracle home location /data/app/oracle/product/11.2.0/db_1Oracle Home type selected for de-install is: SIDBOracle Base selected for de-install is: /data/app/oracleChecking for existence of central inventory location /data/app/oraInventoryInstall check configuration ENDNetwork Configuration check config STARTNetwork de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/netdc_check1471463216126639250.logSpecify all Single Instance listeners that are to be de-configured [LISTENER]:Network Configuration check config ENDDatabase Check Configuration STARTDatabase de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/databasedc_check5326208000777792237.logUse comma as separator when specifying list of values as inputSpecify the list of database names that are configured in this Oracle home [orclyz]: ###### For Database ‘orclyz‘ ######Single Instance DatabaseThe diagnostic destination location of the database: /data/app/oracle/diag/rdbms/orclyzStorage type used by the Database: FSDatabase file location: /data/app/oracle/oradata/orclyz,/data/app/oracle/flash_recovery_area/orclyzFlash recovery area location: /data/app/oracle/flash_recovery_area/ORCLYZdatabase spfile location: /data/app/oracle/product/11.2.0/db_1/dbs/spfileorclyz.oraThe details of database(s) orclyz have been discovered automatically. Do you still want to modify the details of orclyz database(s)? [n]: Database Check Configuration ENDEnterprise Manager Configuration Assistant STARTEMCA de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/emcadc_check.log Checking configuration for database orclyzEnterprise Manager Configuration Assistant ENDOracle Configuration Manager check STARTOCM check log file location : /tmp/deinstall2018-03-08_08-53-24-AM/logs//ocm_check5456.logOracle Configuration Manager check END######################### CHECK OPERATION END ################################################ CHECK OPERATION SUMMARY #######################Oracle Home selected for de-install is: /data/app/oracle/product/11.2.0/db_1Inventory Location where the Oracle home registered is: /data/app/oraInventoryFollowing Single Instance listener(s) will be de-configured: LISTENERThe following databases were selected for de-configuration : orclyzDatabase unique name : orclyzStorage used : FSNo Enterprise Manager configuration to be updated for any database(s)No Enterprise Manager ASM targets to updateNo Enterprise Manager listener targets to migrateChecking the config status for CCROracle Home exists with CCR directory, but CCR is not configuredCCR check is finishedDo you want to continue (y - yes, n - no)? [n]: yA 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‘Any 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‘######################## CLEAN OPERATION START ########################Enterprise Manager Configuration Assistant STARTEMCA de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/emcadc_clean.log Updating Enterprise Manager ASM targets (if any)Updating Enterprise Manager listener targets (if any)Enterprise Manager Configuration Assistant ENDDatabase de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/databasedc_clean1081110075195191916.logDatabase Clean Configuration START orclyzThis operation may take few minutes.Database Clean Configuration END orclyzNetwork Configuration clean config STARTNetwork de-configuration trace file location: /tmp/deinstall2018-03-08_08-53-24-AM/logs/netdc_clean1072295666521765217.logDe-configuring Single Instance listener(s): LISTENERDe-configuring listener: LISTENER Stopping listener: LISTENER Listener stopped successfully. 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 backup files...Backup files de-configured successfully.The network configuration has been cleaned up successfully.Network Configuration clean config ENDOracle Configuration Manager clean STARTOCM clean log file location : /tmp/deinstall2018-03-08_08-53-24-AM/logs//ocm_clean5456.logOracle Configuration Manager clean ENDOracle Universal Installer clean STARTDetach Oracle home ‘/data/app/oracle/product/11.2.0/db_1‘ from the central inventory on the local node : DoneDelete directory ‘/data/app/oracle/product/11.2.0/db_1‘ on the local node : DoneDelete directory ‘/data/app/oraInventory‘ on the local node : DoneDelete directory ‘/data/app/oracle‘ on the local node : DoneOracle Universal Installer cleanup was successful.Oracle Universal Installer clean ENDOracle install clean STARTClean install operation removing temporary directory ‘/tmp/install‘ on node ‘PostalDataDG‘Oracle install clean END######################### CLEAN OPERATION END ################################################ CLEAN OPERATION SUMMARY #######################Successfully de-configured the following database instances : orclyzFollowing Single Instance listener(s) were de-configured successfully: LISTENERCleaning the config for CCRAs CCR is not configured, so skipping the cleaning of CCR configurationCCR clean is finishedSuccessfully detached Oracle home ‘/data/app/oracle/product/11.2.0/db_1‘ from the central inventory on the local node.Successfully deleted directory ‘/data/app/oracle/product/11.2.0/db_1‘ on the local node.Successfully deleted directory ‘/data/app/oraInventory‘ on the local node.Successfully deleted directory ‘/data/app/oracle‘ on the local node.Oracle Universal Installer cleanup was successful.Run ‘rm -rf /etc/oraInst.loc‘ as root on node(s) ‘PostalDataDG‘ at the end of the session.Oracle install successfully cleaned up the temporary directories.#################################################################################### ORACLE DEINSTALL & DECONFIG TOOL END #############
