Simple Network Tests

Some times there is slowness in network and end users face it but complaining about the database or application. We can use some initial testing for such network slowness.

DCD & TCP Keep Alive (Windows)

KNOWN PROBLEMS OR LIMITATIONS  for DCD
1- Of the few reported problems, perhaps the most significant is DCD's poor performance on Windows NT. Dead connections are cleaned up only when the server is rebooted and the database is restarted. Exactly how well DCD works on NT depends on the client's proto implementation.

Copying Files Over Remote Desktop

Start up a remote desktop dialog and set the local resources as desired using options button. After this you will be able to use the clipboard of local system on remote machine.

Desktop Heap Overview

Desktop heap is probably not something that you spend a lot of time thinking about, which is a good thing.  However, from time to time you may run into an issue that is caused by desktop heap exhaustion, and then it helps to know about this resource.  Let me state up front that things have changed significantly in Vista around kernel address space, and much of what I’m talking about today does not apply to Vista.

How to Delete a Windows Service in Windows

If you are a fan of tweaking your system and disabling services, you might find that over time your Windows Services list becomes huge and unwieldy with a large number of services in the list that will never be enabled.

Forbidden file and folder names on Windows

Here’s an interesting experiment. On a Windows desktop, right-click on the desktop, and create a new Folder. Then, try renaming it ‘aux’. Can’t do it, right? There are certain restricted words that cannot be used to name folders or files, even though they use regular characters. You can’t even name it, say, ‘aux.test’.

Windows Sysinternals

The Sysinternals Troubleshooting Utilities have been rolled up into a single Suite of tools. This file contains the individual troubleshooting tools and help files. It does not contain non-troubleshooting tools like the BSOD Screen Saver or NotMyFault.

How to Find Out Which Windows Process is Using a File

Ever come across the following messages and wondered how to find out what is using the file?

• Cannot delete file: Access is denied

Alt+Ctrl+Del on Remote Desktop

In order to send Ctrl-Alt-Del keystrokes to remote computer connected via Remote Desktop client, just press the following workaround
Ctrl+Alt+End

PING with Timestamp

We were getting ORA-3113 errors for some web clients and after investigations, I found that this is due the many network dropouts on all Oracle related servers. I just ran the simple pingtest as below

How Check a specific port , is it being used

PORT NUMBERS

The port numbers are divided into three ranges: the Well Known Ports, the Registered Ports, and the Dynamic and/or Private Ports.

How to get a list of installed operating system patches and fixes

Sometimes, in the release notes or installation guide, there is a reference
to a system patch, or a specific upgrade that needs to be present on the 
system prior to the installation. In order to verify these patches and upgrades, the
list below has been compiled to determine the current system version and patch versions 
previously applied.

Diskpart Command-Line Utility

When we install Oracle RAC 10g on Windows 2003, we have to use the Diskpart utility as below

Remote Desktop Disconnection Problem

If following error is encountered , perform the solution given.

Delete this registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSLicensing from your PC

Map a FTP site to a Drive letter in Windows

The easiest way to access files and folders on a FTP server as windows drive letter, is to install the NetDrive and configure it for your FTP server.  Now you can view your folder and files on FTP as normal windows folders.
NetDrive can be downloaded from here