If the IP address and/or hostname changes for a system running Oracle, the following file should be updated to include the new IP address and/or hostname.
# /etc/hosts
Before Example:
# cat /etc/hosts
127.0.0.1 localhost
172.16.4.27 oracle-node-1.transnexus.com oracle-node-1
After Example:
# cat /etc/hosts
127.0.0.1 localhost
172.16.4.77 oracle-node-2.transnexus.com oracle-node-2
If the hostname changes, the following Oracle files should be renamed to include the new hostname.
$ORACLE_HOME/_dbname
$ORACLE_OME/oc4j/j2ee/OC4J_DBConsole__dbname
Before Example:
$ORACLE_HOME/oracle-node-1_dbaccounting
$ORACLE_OME/oc4j/j2ee/OC4J_DBConsole_oracle-node-1_dbaccounting
After Example:
$ORACLE_HOME/oracle-node-2_dbaccounting
$ORACLE_OME/oc4j/j2ee/OC4J_DBConsole_oracle-node-2_dbname
Also, the following file must be updated to include the new hostname.
$ORACLE_HOME/network/admin/tnsnames.ora
Before Example:
(HOST = oracle-node-1)
After Example:
(HOST = oracle-node-2)
Reconfigure the DBConsole Repository:
[ossadmin@oracle-node-2 ]$ cd $ORACLE_HOME/bin
[ossadmin@oracle-node-2 bin]$ ./emca -deconfig dbcontrol db -repos drop
STARTED EMCA at May 11, 2010 5:08:10 PM
EM Configuration Assistant, Version 11.1.0.7.0 Production
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Enter the following information:
Database SID: dbaccounting
Listener port number: 1521
Password for SYSMAN user:
Do you wish to continue? [yes(Y)/no(N)]: Y
May 11, 2010 5:08:42 PM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /OSS/ORA/oracle/cfgtoollogs/emca/orcl/emca_2010_05_11_17_08_10.log.
May 11, 2010 5:08:42 PM oracle.sysman.emcp.EMDBPreConfig performDeconfiguration
WARNING: EM is not configured for this database. No EM-specific actions can be performed.
May 11, 2010 5:08:42 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Dropping the EM repository (this may take a while) ...
May 11, 2010 5:10:13 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully dropped
Enterprise Manager configuration completed successfully
FINISHED EMCA at May 11, 2010 5:10:13 PM
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[ossadmin@oracle-node-2 bin]$ ./emca -config dbcontrol db -repos create
STARTED EMCA at May 11, 2010 5:11:40 PM
EM Configuration Assistant, Version 11.1.0.7.0 Production
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Enter the following information:
Database SID: dbaccounting
Listener port number: 1521
Password for SYSMAN user: Email address for notifications (optional):
Outgoing Mail (SMTP) server for notifications (optional):
You have specified the following settings
Database ORACLE_HOME ................ /OSS/ORA/oracle/product/11.1.0/db_1
Local hostname ................ oracle-node-2.transnexus.com
Listener port number ................ 1521
Database SID ................ dbaccounting
Email address for notifications ...............
Outgoing Mail (SMTP) server for notifications ...............
Do you wish to continue? [yes(Y)/no(N)]: Y
May 11, 2010 5:12:15 PM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /OSS/ORA/oracle/cfgtoollogs/emca/orcl/emca_2010_05_11_17_11_40.log.
May 11, 2010 5:12:16 PM oracle.sysman.emcp.EMReposConfig createRepository
INFO: Creating the EM repository (this may take a while) ...
May 11, 2010 5:16:26 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully created
May 11, 2010 5:16:28 PM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepository
INFO: Uploading configuration data to EM repository (this may take a while) ...
May 11, 2010 5:17:09 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Uploaded configuration data successfully
May 11, 2010 5:17:10 PM oracle.sysman.emcp.util.DBControlUtil configureSoftwareLib
INFO: Software library configured successfully.
May 11, 2010 5:17:10 PM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Deploying Provisioning archives ...
May 11, 2010 5:17:17 PM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Provisioning archives deployed successfully.
May 11, 2010 5:17:17 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Securing Database Control (this may take a while) ...
May 11, 2010 5:17:36 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Database Control secured successfully.
May 11, 2010 5:17:36 PM oracle.sysman.emcp.util.DBControlUtil startOMS
INFO: Starting Database Control (this may take a while) ...
May 11, 2010 5:17:58 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: Database Control started successfully
May 11, 2010 5:17:58 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: >>>>>>>>>>> The Database Control URL is https://oracle-node-2.transnexus.com:1158/em <<<<<<<<<<<
May 11, 2010 5:18:00 PM oracle.sysman.emcp.EMDBPostConfig invoke
WARNING:
************************ WARNING ************************
Management Repository has been placed in secure mode wherein Enterprise Manager data will be encrypted. The encryption key has been placed in the file: /OSS/ORA/oracle/product/11.1.0/db_1/oracle-node-2.transnexus.com_dbaccounting/sysman/config/emkey.ora. Please ensure this file is backed up as the encrypted data will become unusable if this file is lost.
***********************************************************/h7>
Enterprise Manager configuration completed successfully
FINISHED EMCA at May 11, 2010 5:18:00 PM
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[root@oracle-node-2 bin]# /etc/init.d/dbora stop
Oracle Enterprise Manager 11g Database Control Release 11.1.0.7.0
Copyright (c) 1996, 2008 Oracle Corporation. All rights reserved.
https://oracle-node-2.transnexus.com:1158/em/console/aboutApplication
Stopping Oracle Enterprise Manager 11g Database Control ...
... Stopped.
Processing Database instance "dbaccounting": log file /OSS/ORA/oracle/product/11.1.0/db_1/shutdown.log
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[root@oracle-node-2 bin]#
[root@oracle-node-2 bin]# /etc/init.d/dbora start
Processing Database instance "dbaccounting": log file /OSS/ORA/oracle/product/11.1.0/db_1/startup.log
Oracle Enterprise Manager 11g Database Control Release 11.1.0.7.0
Copyright (c) 1996, 2008 Oracle Corporation. All rights reserved.
https://oracle-node-2.transnexus.com:1158/em/console/aboutApplication
Starting Oracle Enterprise Manager 11g Database Control ............. started.
Logs are generated in directory /OSS/ORA/oracle/product/11.1.0/db_1/oracle-node-2.transnexus.com_dbaccounting/sysman/log