I am using oracle 11g R2 on Linux Redhat 6.3 and created a lot of databases. At that time there was no problem. But currently I am seeing that in DBCA (Database Configuration Assistant) application some options are disabled as follows:-

1 Create a Database - ENABLED

2 Configure Database Options - DISABLED

3 Delete a Database - DISABLED

4 Manage Templates - ENABLED

I don't understand why this happening but in starting all the options were enabled.


oratab file content, inside etc/oratab


# This file is used by ORACLE utilities.  It is created by root.sh
# and updated by the Database Configuration Assistant when creating
# a database.
# A colon, ':', is used as the field terminator.  A new line terminates
# the entry.  Lines beginning with a pound sign, '#', are comments.
# Entries are of the form:
# The first and second fields are the system identifier and home
# directory of the database respectively.  The third filed indicates
# to the dbstart utility that the database should , "Y", or should not,
# "N", be brought up at system boot time.
# Multiple entries with the same $ORACLE_SID are not allowed.



DBCA relies on /etc/oratab. If that file is empty, or the entry for the database you want to delete is missing, the option(s) will be disabled.

  • I checked the oratab and posted its content in the edit section. – Ahmad Abuhasna Aug 3 '14 at 9:48

I found the Answer after long investigation, the problem in my case is root.sh under $ORACLE_HOME/root.sh is not running fine, so in-order to fix this issue I need to use root user then navigate to $ORACLE_HOME and execute the script. it will ask you to Enter the full pathname of the local bin directory: [/usr/local/bin] enter the correct values and replace the old ones. after that open new terminal and use dbca everything will work fine.

Note in-order to get everything back to Normal state I copied everything inside the old oratab into the new one.

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