I wrote a python script to perform failover steps and to take product database IP addresses when product database is down. If you dont use data guard broker or other application for failover operations, you can use this script for failover. My scenario is that I have Oracle 11gR2 2 nodes RAC product database and…
Category: Operating Systems
RPM Command Using on Linux Systems
If you connect linux repo, you can use yum install or yum update to manage your package. On the other hand, if you have RPM package, you can use rpm command to manage packages. RPM command has been using for installing, uninstalling, upgrading, listing,querying and checking RPM packages on linux system. You can use rpm…
How to Lock and Unlock Users on Oracle Linux / Centos / Redhat
Lock User Method 1 [root@test ~]# passwd -l username Method 2 [root@test ~]# usermod -L username Unlock User Method 1 [root@test ~]# passwd -u username Method 2 [root@test ~]# usermod -U username Check Status of Users [root@test ~]# more /etc/shadow username:!!$6$pmQO0ZPH$POolvCzxe1nsd1OpLkMc6E3cd1ffOkcz224caQs1d/oL.OwscUhYfcas//41sS12.:16531:0:99999:7::: Note : If you see “!!” expression or “!” expression start of password of…
Error Code 80072EE6 Windows Update Error Solution
If you receive a 80072EE6 error code when you download an update from Windows Server Update Services in Windows 7 or Windows Server 2008 R2, your update service location can be wrong. You have to control and change with true. Error 80072EE6 error code when you download an update from Windows Server Update Services. Solution
What is RTO, RPO and RLO
RTO, RPO and RLO are very important expressions for information technology companies. You can find descriptions of these expressions. Recovery Point Objective (RPO) RPO is used to determine the maximum amount of time between the last available backup and potential failure point. Recovery point objective (RPO) helps in determining the amount of data that the…
How to Create Virtual IP Address on Oracle Linux System
You can create virtual IP addresses on Oracle Linux, Redhat and Centos Operating Systems with below operations. Virtual IP address can be temporary or static according to your wishes. You have to have a ethernet adaptor interface for example eth0. You can use ifconfig eth0:0 <IP address> syntax to create temporary virtual IP. Create Temporary Virtual…
How to Change SSH Port When Selinux is Enable on Oracle Linux 7
SSH service runs on 22 port number. You can change this port number for security. If you use Oracle Linux 7, Centos 7 or Red Hat Linux 7 versions, you can change port number with below operations. If selinux is enabled, you have to add new port number to selinux configuration because of the fact…
Linux Logical Volume Manager Configuration And Extend Disk Operation
Logical Volume Manager is a disk partitioning solution on linux systems. This architecture provides advantages. You can extend disk size easily with lvm without losing exist data. But, If you use fdisk that is classical method for partition, you can not resize this partitions without losing data. You can follow below steps to configure lvm….
Fstab Cannot Writable
If you mount disk with wrong uuid or wrong text in fstab file, you get an error when system restart. Your system can not open. If you want to change fstab, you can not change this file because of read only. You can change this status with “mount -o remount,rw /” command. This command provides…
How to Copy Only New Files and Changed Files With XCopy on Windows
If you want to copy only new files or changed files, you can use xcopy command in batch script file on Windows system. Copy Only New Files and Changed Files With XCopy set SourceDir=D:\Source set TargetDir=F:\Target xcopy %SourceDir% %TargetDir% /i /d /y /i /d /y parameters provide that copy only new files and changed files….