OpenOffice.org (OOo) is a freely available, full-featured office suite. OOo is both a software product and a community of volunteers that produces and supports the software. However, new users may get lost while finding help, support and productivity enhancing extensions. This blog post covers OOo new user orientation to to discover support, tutorials, community insights, templates, clip art, extensions, and blogs for OOo.
Useful comparison of MySQL and PostgreSQL open source database software.
MySQL vs PostgreSQL is a decision many must make when approaching open-source relational databases management systems. Both are time-proven solutions that compete strongly with propriety database software.
You can now request your FREE Oracle Unbreakable Linux 2-disc Kit from Oracle web site.
phpBB final version 3 has been released and available for download. phpBB is a popular Internet forum package written in the PHP programming language.
Iptables has a special module called owner (ipt_owner), which is attempts to match various characteristics of the packet creator, for locally generated packets. It is valid in the OUTPUT and POSTROUTING chains.
One of my friend installed Oracle first time. After installation, he just wants to make sure everything is working fine so he called me. If you are installing oracle for Unix/Linux oses first time then it will confuse you. He wanted to know how to start oracle service and test it. He emailed me the following error:
ORA-27101: shared memory realm does not exist
ORA-01034: ORACLE not available
You need to add following line to oracle userâ€™s .bash_profile file for testing purpose (once it is tested, you can give control to Oracle DBA) (login as a oracle user):
$ cd;vi .bash_profile
Append following lines:
Save file. Just load the above settings:
$ . .bash_profile
Start oracle Net listing service:
$ lsnrctl start
ALTERNATIVELY use full path:
$ /home/oracle/oracle/product/10.2.0/db_1/bin/lsnrctl start
Start oracle database:
ALTERNATIVELY, use full path:
Connect to Oracle database with sqlplus client (test it with scott username):
$ sqlplus "scott/tiger"
sql> select * from tab;
To shutdown Oracle database:
$ lsnrctl stop
If you are new to Oracle try out Oracle Database 10g Documentation library, especially 2 Day DBA is fantastic document. Do not forget check out John Smiley’s “Installing Oracle Database 10g Release 2 on Linux x86” article. It will teach you the basics of installing Oracle Database 10g Release 2 on Red Hat Enterprise Linux or Novell SUSE Enterprise Linux, from the bare metal up.