Sorting by Specific Column in PowerShell

Hello Folks, I needed a script in Poweshell which sorts the data by specific column. I wanted to share it on my blog as I do not see much examples over the Internet. Let’s say you have data as below and you want to sort this data by specific column. In this example I sort […]

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Solutions of NATAS 1-15

Hello Folks, In this post, I will share with you the solutions of Natas challenges from one to fifteen. It is strongly recommended not to look at the solutions without cogitating. Natas0: Username and password have been already provided for Natas0. URL: http://natas0.natas.labs.overthewire.org natas0/natas0 Solution: Login the page with the credential natas0/natas0. On Chrome Browser right-click […]

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Aruba VAN SDN Controller (invalid user & password combination specified!)

Hello, In this post, I will give the resolution of Invalid user & password combination specified error by the Aruba VAN SDN Controller after fresh installation from the deb. package Ubuntu version for the SDN Controller. tesla@hpcontroller:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty […]

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How to Change I/O Scheduler in Linux

Linux kernel is one of the most complicated software which is being used variety of systems such as laptops, embedded devices, hand-held devices, Database servers, supercomputers etc., All these kind of devices  demand different type of requirements. Some of the applications require fast response to user input. As you know, disk is the slowest physical […]

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Sharing Internet in Linux

Hi Folks! Today, I installed Ubuntu 18.04 LTS on my personal laptop. But I could not connect to the Internet as Ubuntu does not recognize my wireless driver. After couple of googling I have found my wireless driver .[model:Broadcom Limited BCM43142 802.11b/g/n]. But the problem is how I am going to hook-up to the Internet  […]

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Oracle EMCLI-II

In this short post, I am going to show you how to submit your Oracle jobs from the library and how to monitor your Oracle jobs from the command line. By doing that you can create your automation instead of using Oracle Enterprise Manager web interface. Before issuing any command below, first you need to […]

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Finding ORA and SP2 Errors with grep

In this short post, I will share simple grep style Regular Expression to find Oracle ORA-XXXXX and SqlPlus(SP2-XXXX) errors. Connectionless Session with sqlplus: #!/bin/bash #Set oracle environment variables in the .bash_profile . ~/.bash_profile sqlplus -s /nolog <<EOF>test.ora connect <username>/<password>@<connection identifier> SELECT ID || ‘ ‘ || NAME || ‘ ‘ || SNAME || ‘ ‘ […]

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Oracle RMAN backup through emcli

In previous post, I mentioned setting of the emcli and resolving of SSL problem. In this post, I will show you how we simply backup using RMAN through emcli. It is necessary to login  successfully to OMS to backup your database. And all necessary privileges should be given to user who logins to OMS. Creating […]

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[Solved]Connection to the current OMS could not be established

Hello Folks, The last week one of our customer wanted to automatize their Oracle backup systems. As an Oracle environment, customer has Oracle 12c. Luckily Oracle 12c designed for the Cloud. Oracle Enterprise Manager is the graphical interface for managing all of  Oracle database environment. Oracle Enterprise Manager has also command line interface which we […]

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