Repository Configuration Failed:

Question

while installing EMGC 11g, "Repository Configuration" Failed
log files:
INFO: oracle.sysman.top.oms: action logger path calculated finally: /export/home/oracle/Oracle/Middleware_1032v/oms11g/sysman/log/schemamanager/m_101410_0756_PM/m_101410_0756_PM.TRANSX/
INFO: oracle.sysman.top.oms:The transx command execution is completed with the status 0
INFO: oracle.sysman.top.oms:process_id:1dh4pzuderxtx
INFO: oracle.sysman.top.oms:Failure...
INFO: oracle.sysman.top.oms:1 error(s) happened in performing the action:
INFO: oracle.sysman.top.oms:1):
ORA-00955: name is already used by an existing object
File:/export/home/oracle/Oracle/Middleware_1032v/oms11g/sysman/admin/emdrep/sql/core/latest/availability/availability_synonyms.sql
Statement:CREATE PUBLIC SYNONYM MGMT_AVAILABILITY FOR MGMT_AVAILABILITY
INFO: oracle.sysman.top.oms:The plug-in Repository Configuration has failed its perform method
Thanks.

Answer 1

It seems repository was not clean prior to installing gc, drop the repository as below and install again
SELECT COUNT(*) FROM ALL_USERS WHERE USERNAME IN ('SYSMAN','SYSMAN_MDS');
If the result of this query is 1, then the database has these schemas, so drop them.
Before dropping the schema, set the environment variable LD_LIBRARY_PATH to the ORACLE_HOME/lib directory of the OMS. Also set the ORACLE_HOME to the Oracle home of the OMS.
Drop the schema by running the following command from the Oracle home of the OMS.
$<ORACLE_HOME>/sysman/admin/emdrep/bin/RepManager <repository_database_host> <repository_database_port> <repository_database_sid> -action dropall -dbUser <repository_database_user> -dbPassword <repository_database_password> -dbRole <repository_database_user_role> -mwHome <middleware_home> -mwOraHome <oms_oracle_home> -oracleHome <oms_oracle_home>
After dropping the schema, manually delete the database files mgmt.dbf and mgmt_ecm_depot1.dbf.