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Archive for March, 2014

Cluster won’t start if diagnostic_dest folder is missing

Posted by Kamran Agayev A. on 3rd March 2014

One of the reason of why cluster won’t start is DIAGNOSTIC_DEST folder is missing. Here it is what I got today in of the nodes of the RAC environment:

db-bash: crs_stat -t

HA Resource Target State
———– —— —–
error connecting to CRSD at [(ADDRESS=(PROTOCOL=IPC)(KEY=ora_crsqs))] clsccon 184


While checking alert log file of the clusterware ($GRID_HOME/log/node1/alertnode1.log

[/home/oracle/11.2.0/grid_1124/bin/oraagent.bin(4745)]CRS-5011:Check of resource “+ASM” failed: details at “(:CLSN00006:)” in “/home/oracle/11.2.0/grid_1124/log/node01/agent/ohasd/oraagent_oracle/oraagent_oracle.log”


ASM instance failed to start. I connected to ASM instance and tried to start it manually:

db-bash-$ asm

SQL*Plus: Release Production on Mon Mar 3 10:32:24 2014

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

Connected to an idle instance.

ASM> startup

ORA-48108: invalid value given for the diagnostic_dest init.ora parameter

ORA-48140: the specified ADR Base directory does not exist [/home/oracle/11.2.0/dbhome]

ORA-48187: specified directory does not exist

HPUX-ia64 Error: 2: No such file or directory

Additional information: 1



ADR Base Directory is missing. After creating it, I successfully started the CRS and got the happiest message :) :

db-bash-$ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online

Posted in Administration, RAC issues | 2 Comments »

How to configure Enterprise Manager 11gR2 for RAC environment

Posted by Kamran Agayev A. on 2nd March 2014

After migrating 10gR2 single instance to 11gR2 RAC db, the next step should be configuring Enterprise Manager (if you don’t use centralized Grid Control)


It can be done by a simple command. But as usual (at least for me) it didn’t go smooth and I got some errors :). In this article I will show you solutions for some of them.

The command should be run is as follows:

emca -config dbcontrol db -repos create –cluster


It will ask you to provide the following information:

db-bash-$ emca -config dbcontrol db -repos create -cluster


STARTED EMCA at Mar 2, 2014 3:03:19 PM

EM Configuration Assistant, Version Production

Copyright (c) 2003, 2011, Oracle.  All rights reserved.


Enter the following information:

Database unique name:

Service name:

Listener port number:


Password for SYS user:

Password for DBSNMP user:

Password for SYSMAN user:

Cluster name:

Email address for notifications (optional):

Outgoing Mail (SMTP) server for notifications (optional):


ASM port :

ASM username [ ASMSNMP ]:

ASM user password:


–          Get Database unique name from db_unique_name parameter from the database

SQL> show parameter db_unique_name

–          To provide a service name, get the SCAN listener name from the host (ps –ef | grep tns), get the status of SCAN listener by running lsnrctl status LISTENER_SCAN1 command from $GRID_HOME and get the service name from the output

Service “RACDB.MYCOMP.COM” has 3 instance(s).
     Instance “RACDB1”, status READY, has 1 handler(s) for this service…
     Instance “RACDB2”, status READY, has 1 handler(s) for this service…
     Instance “RACDB3”, status READY, has 1 handler(s) for this service…


–          Make sure all password files at all nodes – orapwNODE1[2-3] – are same. If not, create a password file at each node and provide the same password

–          As a Cluster Name, provide the name of the cluster. To get the cluster name, use the following command:

cd $GRID_HOME/bin

./cemutlo –n

–          Make sure you’ve ASMSNMP user created at ASM instance and SYSDBA privilege is granted. Do it in the first node, then copy ora+ASM1 to the different nodes under $GRID_HOME/dbs/+ASM[1-2]


Hope above mentioned notes will help you to create EM db control successfully for your RAC environment.


To get more information from metalink, use the following MOS:

How to manage DB Control 11.x for RAC Database with emca (Doc ID 578011.1)


Posted in Administration | 2 Comments »