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Change CentOS / RHEL 7 server hostname

Change your hostname without restarting the server with these three easy steps: 1.-Delete the old name and set a new name.     sudo nano /etc/hostname Ej. 192.681.1.8     midominio.com 2.- Add your hostname or replace the old one.     sudo nano /etc /hosts midominio.com 3.-Add the following line:      hostname cambiequiporelnombredehostnuevo With […]


ORA-00600: internal error code

Resolve: ORA-00600: internal error code, arguments: [kcratr_scan_lastbwr], [], [], [], [], [], [] PROBLEM [oracle@pri ~]$ sqlplus “/as sysdba” SQL*Plus: Release – Production on Wed Apr 10 16:05:24 2019Version Copyright (c) 1982, 2018, Oracle.  All rights reserved. Connected to an idle instance. SQL> startupORACLE instance started. Total System Global Area 1526725696 bytesFixed Size  […]


Enable Account root in Ubuntu

Assign a password to your root user from your current session from a terminal: Enable login from the graphical interface with the following command: When you open the configuration file, locate the [security] line, and then type the following below it: Edit the gdm-password file with the following statement: In the dgm-password file, locate auth […]

Formateo disco duro

Diskpart: Hard disk formatting

Deleting the contents of an external hard drive becomes complicated. In this article we show you how to remove all the contents of a hard drive that is mounted in a Docking or Case Station yv. We open Windows command prompt (cmd) from startup with administrator privileges. We execute the command to start the program […]