使用OTK工具安装的Oracle默认没有配置EM，下面记录下配置和启动过程!
$ emca -config dbcontrol db -repos recreate
我第一次运行报如下错误：
Mar 31, 2012 4:16:06 PM oracle.sysman.emcp.EMReposConfig createRepository
CONFIG: ORA-00604: error occurred at recursive SQL level 1
ORA-01653: unable to extend table SYS.SOURCE$ by 128 in tablespace SYSTEM
oracle.sysman.assistants.util.sqlEngine.SQLFatalErrorException: ORA-00604: error occurred at recursive SQL level 1
ORA-01653: unable to extend table SYS.SOURCE$ by 128 in tablespace SYSTEM
at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeImpl(SQLEngine.java:1650)
at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeScript(SQLEngine.java:1000)
at oracle.sysman.assistants.util.sqlEngine.SQLPlusEngine.executeScript(SQLPlusEngine.java:339)
at oracle.sysman.assistants.util.sqlEngine.SQLPlusEngine.executeScript(SQLPlusEngine.java:380)
at oracle.sysman.emcp.EMReposConfig.createRepository(EMReposConfig.java:510)
at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:228)
at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:157)
at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:253)
at oracle.sysman.emcp.EMConfigAssistant.invokeEMCA(EMConfigAssistant.java:589)
at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAssistant.java:1448)
at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:573)
at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:521)
Mar 31, 2012 4:16:06 PM oracle.sysman.emcp.EMReposConfig invoke
SEVERE: Error creating the repository
使用SYS用户登录sqlplus，然后执行下面的语句：
SQL> SELECT * FROM DBA_DATA_FILES where TABLESPACE_NAME = 'SYSTEM';
FILE_NAME FILE_ID TABLESPACE_NAME
BYTES BLOCKS STATUS RELATIVE_FNO AUT MAXBYTES MAXBLOCKS INCREMENT_BY USER_BYTES USER_BLOCKS
ONLINE_ /data01/rdbms/wcdb/datafile/wcdb_system_01.dbf 1 SYSTEM 536870912 65536 AVAILABLE
1 NO 0 0 0 535822336 65408
SYSTEM
然后新定义个空间文件wcdb_system_02.dbf，注意不要重名
然后新定义个空间文件*wcdb_system_02.dbf*，注意不要重名
SQL> ALTER TABLESPACE SYSTEM ADD DATAFILE '/data01/rdbms/wcdb/datafile/wcdb_system_02.dbf' SIZE 500M; Tablespace altered.
$ emca -config dbcontrol db
删除数据库的 Database Control配置
$ emca -deconfig dbcontrol db
重新配置db control的端口，默认端口在1158
$ emca -reconfig ports $ emca -reconfig ports -dbcontrol_http_port 1160 $ emca -reconfig ports -agent_port 3940
先设 置ORACLE_SID环境变量后,启动EM console服务
先设置 ORACLE_SID环境变量后,停止EM console服务
先设置ORACLE_SID环 境变量后,查看EM console服务的状态