Enterprise Linux 7

How to Open Port 1521 on Linux Server

by Ed Chen
June 22, 2023July 18, 2023

Firewall on Linux A firewall monitors and controls incoming and outgoing network traffic based on preconfigured security rules. It's not necessarily an appliance, it could… Read More »

How to Resolve Error in invoking target 'install' of makefile ins_ctx.mk

by Ed Chen
April 23, 2022April 21, 2022

ins_ctx.mk Met this error about makefile ins_ctx.mk during the installation of Oracle 11.2 on Enterprise Linux 7: The pieces of error message are: Error in… Read More »

Oracle Grid Infrastructure 19c Installation - INS-32123

How to Resolve INS-32123 Execution of 'GI Install' script fail on nodes

by Ed Chen
April 17, 2021July 3, 2021

There're many reasons to cause this error INS-32123 during the execution of root.sh in middle of grid infrastructure installation. In this post, only one error… Read More »

How to Upgrade Enterprise Linux from 7.x to 7.9

by Ed Chen
April 3, 2021January 7, 2023

Upgrading from Enterprise Linux 7.x (EL7) to the latest release 7.9 within a major version could be easy as long as the yum repository is… Read More »

How to Build 18c RAC - 1 of 4 - Preparing Two Database Servers

by Ed Chen
December 15, 2018June 22, 2023
4 Comments

For 19c, you may refer to: How to Build 19c RAC - 1 of 4 - Preparing Two Database Servers. Network Design for RAC Let's… Read More »

Why OracleASM ListDisks Not Showing Disks

by Ed Chen
October 6, 2018December 10, 2022

ASMLib Scanned Nothing on Boot-Time ASMLib seems to be started too soon to scan iSCSI disks which may not be ready on boot in Enterprise… Read More »

How to Install Oracle Database 11.2.0.4 on Oracle Linux 7.2

by Ed Chen
November 6, 2016June 23, 2023

Please download Oracle Database 11.2.0.4 (Patchset 13390677) for your platform, which is actually a full installer of Oracle database. First of all, I take a… Read More »

How to Shrink XFS File System on Enterprise Linux 7.2

by Ed Chen
March 25, 2016November 22, 2022
31 Comments

Why XFS File System Cannot be Shrunk Directly? Why cannot we just lvreduce XFS file system? A quote from Red Hat official document talking about… Read More »

How to Limit Network Access By Firewalld on Enterprise Linux 7

by Ed Chen
March 19, 2016November 10, 2022

You may have noticed that the service ssh is also added in the public zone (/etc/firewalld/zones/public.xml) by default. This is necessary for initialization. But after… Read More »

How To Bind Multiple IP Addresses to One Network Interface on Enterprise Linux 7

by Ed Chen
August 18, 2015March 30, 2018

Here are the steps that you can add more IP address into the network card.Copy the configuration file of eth0 as eth0:0[root@test ~]# cp -p… Read More »

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