Enterprise Linux

The Default Location of SPFILE and PFILE for Linux and Windows

by Ed Chen
March 29, 2018March 30, 2019

Here is a quick glance at the default locations of SPFILE and PFILE in different platforms. For instance, Linux and Windows. For Linux/Unix SPFILE <ORACLE_HOME>/dbs/spfile<ORACLE_SID>.ora… Read More »

How to Auto Start Oracle Database on Linux

by Ed Chen
March 24, 2018October 17, 2019

For Solaris OS, you should check this post: How to Auto Start Oracle Database on Solaris. Assuming that you already have some knowledge about how… Read More »

How to Migrate Local Databases to Remote Host or Vice Versa Without Dump Files

by Ed Chen
June 11, 2017March 28, 2018

For migrating a remote database, you can dump and pipe the whole database from remote server to local server via ssh tunnel without intermediate dump… Read More »

How to Install and Setup Oracle GoldenGate 12c Environment on Linux

by Ed Chen
May 6, 2017March 28, 2018

Suppose that you have two Oracle database 12c installed on the servers. One is for the source database (ora12c1), the other is the target database… Read More »

How to Mount an Uploaded ISO file in Linux

by Ed Chen
April 8, 2017March 28, 2018

If you were limited to access /dev/cdrom, you can still utilize the content of an ISO by uploading and mounting it. The syntax is as… Read More »

How to Install Oracle VM Manager 3.4.2

by Ed Chen
April 8, 2017December 13, 2018

For simplifying our procedures, I have to assume that you have installed Enterprise Linux 6.7 minimal on the server. The hardware requirements to install OVMM… Read More »

How to Set Date Time of Linux OS Manually

by Ed Chen
March 19, 2017March 28, 2018

Sometimes, you can't use NTP to adjust your server time, you can change it by a command line.[root@rac1 ~]# date -s '2017-02-18 17:30:00'Sat Feb 30… Read More »

What Should be Changed after Cloning a VM

by Ed Chen
March 18, 2017March 26, 2018

You may know that you should change hostname and change NIC configurations after cloning a VM, but you may not know there could be iscsi… Read More »

How to Increase Bash History Size

by Ed Chen
February 4, 2017April 22, 2018

Some valuable or complex commands may not be able to keep in your mind constantly when you need them. In this moment, you can leverage… Read More »

How to Resolve RTNETLINK answers: Invalid argument Error adding default gateway

by Ed Chen
December 29, 2016May 27, 2018

RTNETLINK answers: Invalid argument When I restarted the newly configured network interface, it returned error rtnetlink answers: invalid argument like the following: [root@test ~]# service… Read More »