The power on sequence is as follows: Rack, including switches.Ensure that the switches have had power applied for a few minutes to complete power-on configuration before starting the storage controllers and compute nodes. Storage server heads attached to the chassis of the storage device.Wait for a few minutes for the storage appliance to boot and […]
The Exalogic power off sequence is as follows: Shut down all VMs (shutdown -h -y now) Compute nodes : Compute nodes and controllers can also be powered off by using operating system commands. For example, you can use the following command on the Oracle Linux operating system: shutdown -h -y now Storage server heads attached […]
How to clear Winbind cache Stop the Winbind service : [root@raafat root]# service winbind stop Stop the samba service if you have it : [root@raafat root]# service smb stop Clear the Samba Net cache: [root@raafat root]# net cache flush Delete the Winbind cache : [root@raafat samba]# cd /var/lib/samba/ Always take backup before deleting anything: [root@raafat […]
Centos7 ifconfig not found If you have installed Centos 7 minimall install ,and want to check the server ip ,you will not found ifconfig command ,you have to install its package via the following command : yum -y install net-tools Now,you can use ifconfig command : View All Network Setting ifconfig View information for all […]
vCenter Server provides a centralized platform for management, operation, resource provisioning, and performance evaluation of virtual machines and hosts. Steps for installation: Check the system requirements. Join the server to the Domain. Install MS-SQL Server to be used for DB store if you are not going to use the default embeded Database (vPostgres). Create ODBC […]
SQL Server 2008R2 Step By Step Installation Guide With Images: [Click On the Images to See it Larger]
How to determine if Linux disk is SSD or HDD : Linux automatically detects SSD, and since kernel version 2.6.29, you may verify sda with: cat /sys/block/sda/queue/rotational You should get 1 for hard disks and 0 for a SSD. In my case, I get 0 (cause it’s a SSD). server:~# cat /sys/block/sdb/queue/rotational 0
Check Archivelog mode You can run the following command to check if you are running in ARCHIVELOG mode : [oracle@raafat ~]$ sqlplus “/as sysdba” SQL*Plus: Release 12.1.0.2.0 Production on Tue Dec 8 11:03:52 2015 Copyright (c) 1982, 2014, Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 – 64bit Production With […]
You can check the Oracle DB uptime by run one of the following commands : SELECT host_name, instance_name, TO_CHAR(startup_time, ‘DD-MM-YYYY HH24:MI:SS’) startup_time, FLOOR(sysdate-startup_time) days FROM sys.v_$instance; OR SELECT TO_CHAR(logon_time, ‘DD-MM-YYYY HH24:MI:SS’) FROM v$session WHERE program LIKE ‘%PMON%’
Here are the steps to solve the problem of expired and locked accounts : log into your host running oracle and become the oracle user : -bash-4.1$ sqlplus / ‘as sysdba’ SQL*Plus: Release 11.2.0.3.0 Production on Sun Nov 8 14:33:23 2015 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise […]
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