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I am intalled the Oracle database have followed this steps [link|] .

1.Downloaded 11g express edition

2.Created a new user 'oracle' under the group dba. Following steps are executed using this.

3.unzip and then Converted the rpm to the Ubuntu package

sudo alien --scripts -d oracle-xe-11.2.0-1.0.x86_64.rpm

4.Created /sbin/chkconfig file and added the entries as specified here

5.Created /etc/sysctl.d/60-oracle.conf and added the entries as specified in same link as above.

6.Below steps:

-ln -s /usr/bin/awk /bin/awk
-mkdir /var/lock/subsys
-touch /var/lock/subsys/listener

7.sudo dpkg --install oracle-xe_11.2.0-2_amd64.deb (.deb generated in step 3)

8.sudo /etc/init.d/oracle-xe configure (left the default values as it is)

9.Set the following env variables in ~/.bashrc file

export ORACLE_HOME=/u01/app/oracle/product/11.2.0/xe export ORACLE_SID=XE export NLS_LANG=$ORACLE_HOME/bin/ export ORACLE_BASE=/u01/app/oracle export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH export PATH=$ORACLE_HOME/bin:$PATH

10.Below steps:

-chown -R oracle:dba /var/tmp/.oracle -chmod -R 755 /var/tmp/.oracle -chown -R oracle:dba /tmp/.oracle -chmod -R 755 /tmp/.oracle

11.sudo service oracle-xe start Starting Oracle Database 11g Express Edition instance. //this line is a space

12 . sqlplus / as sysdba and got the following SQL*Plus: Release Production on Thu Jan 3 09:41:58 2013

Copyright (c) 1982, 2011, Oracle. All rights reserved.

Connected to an idle instance.

Now when exectute any SQL statements on SQLplus, i end up with the following error

SQL> select * from dual; select * from dual * ERROR at line 1: ORA-01034: ORACLE not available Process ID: 0 Session ID: 0 Serial number: 0

I have increased the swap memory as specified in [here |]

free -m

total used free shared buffers cached Mem: 3901 3428 473 0 182 1988 -/+ buffers/cache: 1258 2643 Swap: 5066 0 5066

what the solution for this error ? ORACLE not available Process ID: 0 Session ID: 0 Serial number: 0

please help me.

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