Asus to release desktop Eee PC as Ebox for US $200-300.
preload is a free Linux. It runs in background and records statistics about usage of more frequently-used programs. These programs are loaded into a Linux memory. Thus results is faster application startup times. From the project home page:
preload is an adaptive readahead daemon. It monitors applications that users run, and by analyzing this data, predicts what applications users might run, and fetches those binaries and their dependencies into memory for faster startup times.
(Fig. 01: preload in action – saving time while loading Linux apps)
There is a nice tutorial published by Techthrob about installing and configuring Techthrob under Debian / Ubuntu Linux systems.
=> Drastically Speed up your Linux System with Preload
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.