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How to remove libvirt from CentOS 7 or RedHat

How to remove libvirt from CentOS 7 or RedHat

HowTo
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25
Libvirt is API, daemon and tool for managing of virtualization platforms and virtual interfaces and it0s used by some GUI or CLI (virsh) interfaces - but for standalone virtual machines who will don’t have any other virtualization inside (dockers, lxc...) it's уuseless so I do a remove i ...
How to check Oracle Alert log by a crontab-ready script

How to check Oracle Alert log by a crontab-ready script

HowTo
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73
With this script you can check, for example - for every hour in alert log is there some new ORA errors, and in case new errors are generated, you will receive email notification about. Of course if AlertLog is too big (for example bigger than 2GB), you can archive it (rename je safe opti ...
How to install Oracle 12c software on CentOS 7

How to install Oracle 12c software on CentOS 7

HowTo
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95
In this tutorial we will install Oracle 12c software (in this case version 12.2.0.1) but without database, software only. Even if it looks like very complex install here - it isn't, this is simplified with some variables and with some extra options like firewall settings, checking of fre ...
E-mail alert when Oracle tablespaces gets low

E-mail alert when Oracle tablespaces gets low

HowTo
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101
You can run this script as a any Oracle db user and as a oracle Linux user, and you can put this script to your crontab for daily checks. Also, you will get email when DB is not started because of any reason. Run sctipt on this way:
How to extend the size of a Linux LVM by adding a new disk

How to extend the size of a Linux LVM by adding a new disk

HowTo
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83
In this example we will extend one LVM partitotion for 120GB which is size of newly added hard disk. vom primeru proširićemo jednu LVM particiju za 120GB koje je veličine novododati disk. Before any 'gameplay' with disk recommendation is to make data backup first. First lets check cur ...
How to extend swap space in Linux

How to extend swap space in Linux

HowTo
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87
Sometime you will need to increase space fo swap space in Linux - and for that isn't needed to add new disk or to restart server - if you have enought free space on current environment you can use some amount of that server for extendinx swap. In this tutorial we will use variables for e ...