解决了Oracle的EM无法启动EM。 提示localhost_oracledb not found。
[ Oracle @ oracledb~] $ emctlstartdbconsoleemconfigurationissue./app/Oracle/product/11.2.0/db _1/local ho ssho
(1)要重新创建em数据库，必须输入数据库SID、sys和sysman密码。
[ Oracle @ oracledb~] $ emca-reposrecreatestartedemcaatoct 31，20211336014336056无心哑铃， 版本11.2.0.3.0 production Oracle.all rights reserved.enterthefollowinginformation 3360数据库id : oracledblistention r swordforsysmanuser 3360------------------------------ willbeputinquiescemode--------。 ------------------------------------------.---------------------------------------------- ------------------------------------------.---------------------------------------------- [是(y ) /否(n ) ]: yOct 31， 20211336015336022 am Oracle.sysman.emconfigperforminfo : thisoperationisbeingloggedat/app/Oracle/cfgtoollloged emca _ ca 20211336015336023 am Oracle.sysman.emcp.emreposconfiginvokeinfo : droppingtheemrepository，thismaytakeawhile， oct 20211336017336008 am Oracle.sysman.emcp.emreposconfiginvokeinfo : repositorysuccessfullydroppedoct 31， 20211336017336009 am Oracle.sysman.emcp.emreposconfigcreaterepositoryinfo : creatingtheemrepository (thismaytakeawhillilitory sman.emcp.emreposconfiginvokeinfo : repositorysuccessfullycreatedenterprisemanagerconfiguration cesssfulllyfinishedemcatocatococation 20211336023:29am(2)配置数据库SYSMAN和DBSNMP帐户的初始密码为： oem_temp
邮件可以选择直接返回滑架。 过程需要等待一段时间。
[ Oracle @ oracledb~] $ emca-configdbcontroldbstartedemcaatoct 31，20211336035336017无心哑铃， 版本11.2.0.3.0产品2011年、 Oracle.all rights reserved.enterthefollowinginformation 3360数据库id : oracledblistenerportnumber 33601521监听器Oracle Oracle : ypasswordforsysuser 3360 passwordfordbsnmpuser 3360 oct 31， 20211336036:18 am Oracle.sysman.emcp.util.generalutilinitsqlengineloaclywarning 3360 ora-2800003360 theacccountiountiolocountiolocon tions (选项) : outgoing mail (SMTP ) serverfornotifications (选项) 3360----
ified the following settingsDatabase ORACLE_HOME ................ /app/oracle/product/11.2.0/db_1Local hostname ................ localhostListener ORACLE_HOME ................ YListener port number ................ 1521Database SID ................ oracledbEmail address for notifications ............... Outgoing Mail (SMTP) server for notifications ............... -----------------------------------------------------------------Do you wish to continue? [yes(Y)/no(N)]: yOct 31， 2021 1:36:45 AM oracle.sysman.emcp.EMConfig performINFO: This operation is being logged at /app/oracle/cfgtoollogs/emca/oracledb/emca_2021_10_31_01_35_16.log.Oct 31， 2021 1:36:51 AM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepositoryINFO: Uploading configuration data to EM repository (this may take a while) ...Oct 31， 2021 1:38:25 AM oracle.sysman.emcp.EMReposConfig invokeINFO: Uploaded configuration data successfullyOct 31， 2021 1:38:26 AM oracle.sysman.emcp.ParamsManager getLocalListenerWARNING: Error retrieving listener for localhostOct 31， 2021 1:38:27 AM oracle.sysman.emcp.util.DBControlUtil secureDBConsoleINFO: Securing Database Control (this may take a while) ...Oct 31， 2021 1:38:35 AM oracle.sysman.emcp.util.PlatformInterface executeCommandWARNING: Error executing /app/oracle/product/11.2.0/db_1/bin/emctl secure dbconsole -host localhost -sid oracledb Oct 31， 2021 1:38:35 AM oracle.sysman.emcp.EMDBPostConfig performConfigurationWARNING: Error securing Database control.Oct 31， 2021 1:38:35 AM oracle.sysman.emcp.EMDBPostConfig setWarnMsgINFO: Error securing Database Control. Database Control has been brought-up in non-secure mode. To secure the Database Control execute the following command(s): 1) Set the environment variable ORACLE_UNQNAME to Database unique name 2) /app/oracle/product/11.2.0/db_1/bin/emctl stop dbconsole 3) /app/oracle/product/11.2.0/db_1/bin/emctl config emkey -repos -sysman_pwd < Password for SYSMAN user > 4) /app/oracle/product/11.2.0/db_1/bin/emctl secure dbconsole -sysman_pwd < Password for SYSMAN user > 5) /app/oracle/product/11.2.0/db_1/bin/emctl start dbconsole To secure Em Key， run /app/oracle/product/11.2.0/db_1/bin/emctl config emkey -remove_from_repos -sysman_pwd < Password for SYSMAN user >Oct 31， 2021 1:38:35 AM oracle.sysman.emcp.util.DBControlUtil startOMSINFO: Starting Database Control (this may take a while) ...Oct 31， 2021 1:38:41 AM oracle.sysman.emcp.EMDBPostConfig performConfigurationINFO: Database Control started successfullyOct 31， 2021 1:38:42 AM oracle.sysman.emcp.EMDBPostConfig performConfigurationINFO: >>>>>>>>>>> The Database Control URL is http://localhost:1158/em <<<<<<<<<<<Error securing Database Control. Database Control has been brought-up in non-secure mode. To secure the Database Control execute the following command(s): 1) Set the environment variable ORACLE_UNQNAME to Database unique name 2) /app/oracle/product/11.2.0/db_1/bin/emctl stop dbconsole 3) /app/oracle/product/11.2.0/db_1/bin/emctl config emkey -repos -sysman_pwd < Password for SYSMAN user > 4) /app/oracle/product/11.2.0/db_1/bin/emctl secure dbconsole -sysman_pwd < Password for SYSMAN user > 5) /app/oracle/product/11.2.0/db_1/bin/emctl start dbconsole To secure Em Key， run /app/oracle/product/11.2.0/db_1/bin/emctl config emkey -remove_from_repos -sysman_pwd < Password for SYSMAN user >[oracle@oracledb ~]$ （3）开机启动项先设置ORACLE_SID环境变迷路的彩虹，启动EM console服务
emctl start dbconsole
先设置ORACLE_SID环境变迷路的彩虹，停止EM console服务
emctl stop dbconsole
先设置ORACLE_SID环境变迷路的彩虹，查看EM console服务的状态
emctl status dbconsole
配置dbconsole的步骤emca -repos create
emca -config dbcontrol db
emctl start dbconsole
重新配置dbconsole的步骤emca -repos drop
emca -repos create
emca -config dbcontrol db
emctl start dbconsole
（5） 常用命令emca -repos create创建一个EM资料库
emca -repos recreate重建一个EM资料库
emca -repos drop删除一个EM资料库
emca -config dbcontrol db配置数据库的 Database Control
emca -deconfig dbcontrol db删除数据库的 Database Control配置
emca -reconfig ports 重新配置db control的端口，默认端口在1158
emctl start console启动EM console服务，使用前需要先设置ORACLE_SID环境变量
emctl stop console停止EM console服务，使用前需要先设置ORACLE_SID环境变量