I took a clone backup for windows failover cluster system from vmware system which used raw disks. Raw disks automatically converted to vmdk disk via vmware. I restored this clone backup as new standalone server. I started system but my disks were reserved status and I could not use these. I implemented below steps to…
Category: Operating Systems
Configure DNS Alias For Network Share Drive on Windows
I did not find network share drives after vmware clone operation from windows cluster fail safe SAP CRM to standalone server. \\fcrmsap drive not found. fcrm1 was my hostname. On Windows machines, file sharing can work via the computer name, with or without full qualification, or by the IP Address. By default, however, filesharing will…
How to Install Oracle Enterprise Linux 7
Oracle company released Oracle Enterprise Linux 7 version. OEL7 has new features. You can install OEL7 like below. Installation OEL7
Error: Cluster Disk 1 Does Not Support Persistent Reservations.
While I was installing Windows Failover Cluster system, I got an error like “Cluster Disk 1 does not support persistent reservations.”. If you are attempting to set up a Cluster in a Single Host, and the shared disk (or disks) for the cluster is RDM (Raw Device Mapping, or Raw Disk Mapping), in Physical Compatibility…
Schedule Reboot Linux System With Crontab
You can reboot linux system with crontab. You can use below command for schedule reboot operation. Schedule Reboot With Crontab [root@server ~]# crontab -e 10 4 * * * /sbin/shutdown -r now The system will be reboot every day at 04:10 AM with above schedule.
Get Before Day Of Date With Windows Batch Script
You can use below script to get yeterday of date. Batch Script @echo off set yyyy= set $tok=1-3 for /f “tokens=1 delims=.:/-, ” %%u in (‘date /t’) do set $d1=%%u if “%$d1:~0,1%” GTR “9” set $tok=2-4 for /f “tokens=%$tok% delims=.:/-, ” %%u in (‘date /t’) do ( for /f “skip=1 tokens=2-4 delims=/-,().” %%x in (‘echo.^|date’)…
How to Add or Delete Route in Oracle Linux
IP routing involves forwarding of IP datagrams. Its a simple process in which the host sends the IP datagram directly to the destination if the destination host is connected. For example, through a point to point link or through a shared network. If the destination host is not directly connected then the host sends the…
How to Increase Swap Space Size in Linux System
Swap space in Linux is used when the amount of physical memory (RAM) is full. If the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the swap space. While swap space can help machines with a small amount of RAM, it should not be considered a…
Disable root SSH Login on Linux Server
Root user is the most authoritative user on linux operating systems. You can take measure for security with disable root ssh. You can connect to server with other users. Edit sshd_config vi /etc/ssh/sshd_config #LoginGraceTime 2m #PermitRootLogin yes #StrictModes yes Note : “PermitRootLogin yes” is default value. This value allows ssh root login You have to…
Oracle DbLink With Odbc Connection From Oracle to MsSQL Server With FreeTDS
I will use Oracle 11g R2 database and SQL Server 2008 R2 on this example. If you want to connect from Oracle to SQL Server, you can use freeTDS connection library on Oracle Linux systems. If we use Windows Server for Oracle database, we can use direct Windows ODBC Driver Manager. On the other hand,…