Enterprise Linux

How to Resolve PRVG-11250 : The check "RPM Package Manager database" was not performed because it needs 'root' user privileges

by Ed Chen
October 16, 2020August 1, 2021

PRVG-11250 Saw error PRVG-10467 during the validation check before grid installation. [grid@primary01 ~]$ cd $ORACLE_HOME [grid@primary01 grid]$ ./runcluvfy.sh stage -pre crsinst -n primary01,primary02 -verbose ...… Read More »

Where is Oracle SPFILE Location

by Ed Chen
March 29, 2018August 25, 2021

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

How to Auto Start Oracle Database on Linux

by Ed Chen
March 24, 2018August 15, 2021
2 Comments

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, 2017January 17, 2021

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, 2017August 26, 2020

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 »