Oracle Enterprise Manager

For upgrading Oracle database from 11g to 19c, we need to remove the Enterprise manager repository manually. Below are the steps,

1. Stop the em dbconsole If database control is configured.

[oracle@ol7-dev u01]$ emctl stop dbconsole
Oracle Enterprise Manager 11g Database Control Release 11.2.0.4.0
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
https://ol7-dev:1158/em/console/aboutApplication
Stopping Oracle Enterprise Manager 11g Database Control ...
 ...  Stopped.

2. Copy emremove.sql from target 19c ORACLE_HOME/rdbms/admin to source 11g ORACLE_HOME/rdbms/admin

[oracle@ol7-dev admin]$ cp /u01/app/oracle/product/19.3.0/dbhome_1/rdbms/admin/emremove.sql /u01/app/oracle/product/11.2.0/db_1/rdbms/admin/

3. Connect to source database using sys user and run emremove.sql

[oracle@ol7-dev admin]$ sqlplus

SQL*Plus: Release 11.2.0.4.0 Production on Sat Nov 7 22:53:58 2020

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Enter user-name: /as sysdba

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @$ORACLE_BASE/product/11.2.0/db_1/rdbms/admin/emremove.sql
old  70:     IF (upper('&LOGGING') = 'VERBOSE')
new  70:     IF (upper('VERBOSE') = 'VERBOSE')

PL/SQL procedure successfully completed.

SQL>

EM repository has been removed successfully…