I installed Oracle XE 11g on my Ubuntu in vmware fusion. The oracle installation is all went fine but I am not able to connect the oracle database using sqlplus. I am getting this exception:

$ sqlplus

SQL*Plus: Release Production on Wed May 27 18:40:24 2015

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

Enter user-name: system
Enter password: 
ORA-01034: ORACLE not available
ORA-27102: out of memory
Linux-x86_64 Error: 12: Cannot allocate memory
Additional information: 1
Additional information: 3309588
Additional information: 8
Process ID: 0
Session ID: 0 Serial number: 0

I followed the instructions as per this excellent blog http://blog.whitehorses.nl/2014/03/18/installing-java-oracle-11g-r2-express-edition-and-sql-developer-on-ubuntu-64-bit/ and got everything installed but feels like I am missing something obvious. My have setup Vmware fusion with 2GB of Memory.

  • whats the version of Ubuntu that you are using? Commented May 27, 2015 at 18:52

1 Answer 1


Cannot allocate memory means you have not enough ram. check the memory requirements in the oralce guide

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