Oracle 10G重建EM DB Control.

Oracle 10G重建EM DB Control.
1.drop configuration files and repository run :
emca -deconfig dbcontrol db -repos drop
2. Logon SQLPLUS as user SYS or SYSTEM, and drop the sysman account and mangement objects:
a. drop user sysman cascade;
b. drop role MGMT_USER;
c. drop user MGMT_VIEW cascade;
d. drop public synonym MGMT_TARGET_BLACKOUTS;
e. drop public synonym SETEMVIEWUSERCONTEXT;
3.Create configuration files and repository run
emca -config dbcontrol db -repos create