Configure OEM in Oracle 11gR2 on Window

The Oracle Enterprise Manager, (OEM) is the standard monitoring tool for Oracle databases . The OEM allows the DBA to easily manage every aspect of the database, even non-traditional tasks like applying patches and scheduling jobs . Sometimes OEM doesn't work due to some issue and  i face such a issues while re-configuring it  and follow this method . Let's have a look on this below issue . All the steps are same for window or linux/unix platform . (just change path and variable where required)

C:\>set ORACLE_SID=orcl

C:\>emca  -deconfig  dbcontrol  db  -repos  drop

STARTED EMCA at Jun 28, 2012 10:52:27 AM

EM Configuration Assistant, Version 11.2.0.0.2 Production

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Enter the following information:

Database SID: orcl

Listener port number: 1521

Password for SYS user:

Password for SYS user: xxxx

Do you wish to continue? [yes(Y)/no(N)]: y

Jun 28, 2012 10:52:53 AM oracle.sysman.emcp.EMConfig perform

INFO: This operation is being logged at C:\app\Neerajs\cfgtoollogs\emca\orcl\emca_2012_06_28_10_52_24.log.

Jun 28, 2012 10:52:55 AM oracle.sysman.emcp.EMDBPreConfig performDeconfiguration

WARNING: EM is not configured for this database. No EM-specific actions can be performed.

Jun 28, 2012 10:52:56 AM oracle.sysman.emcp.ParamsManager checkListenerStatusForDBControl

WARNING: Error initializing SQL connection. SQL operations cannot be performed

Jun 28, 2012 10:52:56 AM oracle.sysman.emcp.EMReposConfig invoke

INFO: Dropping the EM repository (this may take a while) ...

Jun 28, 2012 11:03:43 AM oracle.sysman.emcp.EMReposConfig invoke

INFO: Repository successfully dropped

Enterprise Manager configuration completed successfully

FINISHED EMCA at Jun 28, 2012 11:03:44 AM

Now, creating  OEM

C:\>sqlplus sys/xxxx@orcl as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Thu Jun 28 11:07:03 2012

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>  drop  user  SYSMAN   cascade ; 

 drop  user  SYSMAN   cascade

             *

ERROR at line 1:

ORA-01918: user 'SYSMAN' does not exist

SQL> drop  user  MGMT_VIEW ;

drop  user  MGMT_VIEW

            *

ERROR at line 1:

ORA-01918: user 'MGMT_VIEW' does not exist

SQL>  drop  role MGMT_USER ;

 drop  role MGMT_USER

            *

ERROR at line 1:

ORA-01919: role 'MGMT_USER' does not exist

Drop all the dependent synonyms of  "sysman" 

SQL> spool  drop_synonym.sql 

SQL> SELECT  'drop public synonym '  || synonym_name || ';'   FROM dba_synonyms  WHERE    table_owner = 'SYSMAN';

no rows selected

If we have got  any  output here , then run the below script .

SQL> @drop_synonym.sql 

Let's  Configure EM

C:\>set ORACLE_SID=orcl

C:\>set ORACLE_HOME=C:\app\Neerajs\product\11.2.0\dbhome_1

C:\>emca -config dbcontrol db -repos create

STARTED EMCA at Jun 28, 2012 11:08:59 AM

EM Configuration Assistant, Version 11.2.0.0.2 Production

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Enter the following information:

Database SID:  orcl 

Exception in thread "main" oracle.sysman.emcp.exception.DatabaseUnavailableException: Database instance unavailable.

        at oracle.sysman.emcp.DatabaseChecks.throwDBUnavailableException(DatabaseChecks.java:151)

        at oracle.sysman.emcp.DatabaseChecks.checkDbAvailabilityImpl(DatabaseChecks.java:144)

        at oracle.sysman.emcp.DatabaseChecks.checkDbAvailability(DatabaseChecks.java:163)

        at oracle.sysman.emcp.DatabaseChecks.getDbServiceName(DatabaseChecks.java:582)

        at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAssistant.java:1272)

        at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:574)

        at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:522)

and the emca log contains the below details : 

oracle.sysman.emcp.util.GeneralUtil initSQLEngineLoacly

CONFIG: ORA-01031: insufficient privileges

oracle.sysman.assistants.util.sqlEngine.SQLFatalErrorException: ORA-01031: insufficient privileges

at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeImpl(SQLEngine.java:1655)

at oracle.sysman.assistants.util.sqlEngine.SQLEngine.connect(SQLEngine.java:978)

at oracle.sysman.emcp.util.GeneralUtil.initSQLEngineLoacly(GeneralUtil.java:445)

at oracle.sysman.emcp.util.GeneralUtil.initSQLEngine(GeneralUtil.java:637)

at oracle.sysman.emcp.DatabaseChecks.checkDbAvailabilityImpl(DatabaseChecks.java:118)

From the above logs, we find two hints  i.e, database instance is down and ORA-01031 . We  search on meta-link and find some useful information . So, some possible reasons may be : 

1.) Database may not be up.

2.) Database is started setting environment variable ORACLE_HOME with trailing '/'. Reset  ORACLE_HOME and bounce the database.

3.) Confirm that the database is up.  Connect to the database via sql*plus and do:-

C:\>sqlplus sys/xxxx@orcl as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Thu Jun 28 17:25:00 2012

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select instance_name,status,version from v$instance;

INSTANCE_NAME    STATUS          VERSION

----------------         ------------      -----------------

orcl                          OPEN             11.2.0.1.0

4.) Confirm whether the $ORACLE_HOME environmental variable is correct. This involves comparing the current ORACLE_HOME environmental setting, with the one that was set the last time the database was started. 

a.) To check the current ORACLE_HOME :-

set ORACLE_HOME (windows)

b.) To check the $ORACLE_HOME which was set at the time when the database was last started .Connect to sqlplus as SYS as SYSDBA and issue the following:-

SQL> var OHM varchar2(100);

SQL> EXEC dbms_system.get_env('ORACLE_HOME', :OHM) ;

PL/SQL procedure successfully completed.

SQL> PRINT OHM

OHM

<Oracle_Home which was set at the time that the database was last started will be returned here>

c.) If the ORACLE_HOME was set wrongly at the time that the database was started (as determined by above steps), then the database will need to be shut down and re-started. To shut the database down, it will be necessary to set the 'wrong' ORACLE_HOME (the one which is returned in the OHM output). After the database has been successfully shut down, then the correct ORACLE_HOME should be set, and the database can be re-started.

5.) Confirm whether it's possible to connect to the database as the SYSDBA user remotely, using sqlplus. As part of the repository creation/drop process, the SYS user needs to be able to connect as SYSDBA . The ORA-01031: insufficient privileges error is returned when the SYS user is unable to connect as SYSDBA.  To test this outside of dbconsole, test a sqlplus remote connection (one which connects via a tnsnames.ora alias) as sysdba. eg:-

$ORACLE_HOME/bin>sqlplus sys/<password>@<alias> as sysdba

If the above returns the ora-1031 error, check the following :-

a.) Check whether the REMOTE_LOGIN_PASSWORDFILE initialization parameter is set correctly in the database.  For the purposes of configuring dbconsole, it must be set to 'EXCLUSIVE'.  This value can be checked by logging into the database via sql*plus and typing "show parameter remote".

SQL> show parameter remote 

NAME                                                TYPE                VALUE

----------------------------                    ---------            --------------

remote_login_passwordfile            string                EXCLUSIVE

If this parameter is not set to 'EXCLUSIVE', the following command can be run .

SQL>alter system set remote_login_passwordfile=EXCLUSIVE scope=spfile;

b.) For dbconsole 11.2.0.1 and 11.2.0.2 check whether the %ORACLE_HOME%/network/admin/sqlnet.ora (or %TNS_ADMIN%/sqlnet.ora)  contains the entry . 

SQLNET.AUTHENTICATION_SERVICES = (NTS)

In my case the value of  SQLNET.AUTHENTICATION_SERVICES is NONE . So, i changed to NTS and finally able to configure the OEM . The rest are as 

C:\>set ORACLE_SID=orcl

C:\>set ORACLE_HOME=C:\app\Neerajs\product\11.2.0\dbhome_1

C:\>emca  -config dbcontrol db -repos create -SID  ORCL   -PORT  1521 -ORACLE_HOME  C:\app\Neerajs\product\11.2.0\dbhome_1

STARTED EMCA at Jun 28, 2012 11:51:08 AM

EM Configuration Assistant, Version 11.2.0.0.2 Production

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Enter the following information:

Listener ORACLE_HOME [ C:\app\Neerajs\product\11.2.0\dbhome_1 ]: C:\app\Neerajs\product\11.2.0\dbhome_1

Password for SYS user:

Password for DBSNMP user:

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 ................ C:\app\Neerajs\product\11.2.0\dbhome_1

Local hostname ................ ramtech-199

Listener ORACLE_HOME ................ C:\app\Neerajs\product\11.2.0\dbhome_1

Listener port number ................ 1521

Database SID ................ ORCL

Email address for notifications ...............

Outgoing Mail (SMTP) server for notifications ...............

-----------------------------------------------------------------

Do you wish to continue? [yes(Y)/no(N)]: y

Jun 28, 2012 11:51:48 AM oracle.sysman.emcp.EMConfig perform

INFO: This operation is being logged at C:\app\Neerajs\cfgtoollogs\emca\orcl\emca_2012_06_28_11_51_07.log.

Jun 28, 2012 11:51:51 AM oracle.sysman.emcp.EMReposConfig createRepository

INFO: Creating the EM repository (this may take a while) ...

Jun 28, 2012 12:55:16 PM oracle.sysman.emcp.EMReposConfig invoke

INFO: Repository successfully created

Jun 28, 2012 12:55:53 PM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepository

INFO: Uploading configuration data to EM repository (this may take a while) ...

Jun 28, 2012 1:07:37 PM oracle.sysman.emcp.EMReposConfig invoke

INFO: Uploaded configuration data successfully

Jun 28, 2012 1:07:58 PM oracle.sysman.emcp.util.DBControlUtil configureSoftwareLib

INFO: Software library configured successfully.

Jun 28, 2012 1:07:58 PM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary

INFO: Deploying Provisioning archives ...

Jun 28, 2012 1:10:46 PM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary

INFO: Provisioning archives deployed successfully.

Jun 28, 2012 1:10:47 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole

INFO: Securing Database Control (this may take a while) ...

Jun 28, 2012 1:11:26 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole

INFO: Database Control secured successfully.

Jun 28, 2012 1:11:27 PM oracle.sysman.emcp.util.DBControlUtil startOMS

INFO: Starting Database Control (this may take a while) ...

Jun 28, 2012 1:14:55 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration

INFO: Database Control started successfully

Jun 28, 2012 1:15:05 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration

INFO: >>>>>>>>>>> The Database Control URL is https://ramtech-199:5500/em <<<<<<<<<<<

Jun 28, 2012 1:15:48 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: C:/app/neerajs/product/11.2.0/dbhome_1/ramtech-199_orcl/sysman/config

/emkey.ora.   Please ensure this file is backed up as the encrypted data will become unusable if this file is lost.

***********************************************************

Enterprise Manager configuration completed successfully

FINISHED EMCA at Jun 28, 2012 1:15:48 PM

Enjoy    :-)