QueryLight Overview

Query light is a JDBC based Oracle database client developed using java swing.It is based on JDBC. Application has moderate sql editing capabilities. It provides basic querying and data retrieval functions. Query light is ideal for working on read only environments.

Features

Has Toad , Sqldevloper like Ctrl + enter to run query function.

Very lightweight application, consumes less than 50Mb in memory.

Provides ability to export/save queried data in excel , csv formats.

Is able to Describe most database objects with select and F4.

Can be used as an alternative to heavy database front ends where basic features / functions are needed.

Can run on Linux and Windows.

QueryLight Supports multiple database sessions

QueryLight at Work.

Source Code on GitHub : https://github.com/milind-brahme/query-light

Comments

Use the Microsoft Visual Studio Code(VScode) with Java Maven project.

The VS Code is the go to editor now a days for the latest technologies and scripting options. VS Code as we all know works seamlessly with Python and JavaScripts, and offcourse the .NET family. But VS Code has many extensions which makes it big Java IDEs run for their money. Lets explore what we could do with VSCode if we are Java developer. Install VScode , no brainer. Jus type download Visual Studio code in google. Alrright once we have VSCode. Open it. Install Maven and Java extension. 2. Go to files and a small window will now appear on left side navigation bar. 3. Select New Maven project. 4. Select the archtype from dropdown. 5. As usual input the grpid, artifactid etc. 6. Done. Go through a video which has much detailed navigation flow. Till next time !!!

Cyclic blocking session removal script written by me for Oracle Database.

Plenty of times we have cyclic database blocking sessions. We have the script which runs in loop and kills them , only to see new blocking sessions have resurfaced. This is a classic scenario that happens many time due to poor application design. A was blocking B , B was blocking C. Unless you have some automated blocking session clearing script. You would run a script at point in time killing session of A. Giving the lock ownership to B. B could realize it late that he has the lock and not commit his work. So DBA again goes in and sees block kills B's session. In meantime Frustrated A logs in and start his activity again queuing him up in wait for lock retrieval . This goes on and you end up running the script 5-10 times to kill these sessions to finally clear the blocks. Note this is not a deadlock which is normally apprehended and identified by oracle. In such case we had written below plsql to clear the sessions. This basically goes in and check for locks ever...

Introduction to Oracle Analytical functions , rank , denserank.

In this video we tried to demonstrate how oracle anaytical function works. How to do Top N query with oracle's rank and dense_rank function. Also explained is how outputs and functionality of rank and dense_rank differs , what should be used when. The demonstration video is from Linux Mint OS and I have used my own Query Light application. Hope you find it enlightening. Here are some of the screen prints. Use of Oracle Rank Analytical Function. Oracle Top N Query using rank analytical functions.

QueryLight

Search This Blog