Asiri Gunasena

How to Solve Oracle expdp ora-01555 snapshot too old

Once you export expdb job to backup the database table this error ORA-01555: snapshot too old: rollback segment number 12 with name might raise. Why is this error raised? One ...

May 12, 2023

Top 10 Tools for Download YouTube to MP3 in 1S

Downloading music from YouTube is not hard work there are hundreds of web and mobile apps for downloading YouTube to mp3. But those are different from each other in quality, ...

Asiri Gunasena

April 2, 2023

Poor SQL Index Usage including Good Examples

When making performance improvements in your database SQL Index Usage is one of the most valuable and essential features. SQL Indexes are used to retrieve data from databases by reducing ...

Asiri Gunasena

March 13, 2023

EXISTS Vs IN | How To Change Performance In Subqueries

Performance improvement is not a stick into theory. It’s the same with EXISTS vs IN keywords. It’s practical. In certain cases, EXISTS does well for subqueries rather than IN. In ...

Asiri Gunasena

March 1, 2023

How to Grow your Business with Brevo X-Sendinblue FREE

SendInBlue is one of the great tools for email marketing for one who wants to do the marketing using email, SMS, and chat. This is more reliable for small and ...

Asiri Gunasena

December 22, 2022

Hostinger Most Exited Hosting Deals Now $1.99/mo

Hostinger is a web hosting company doing hosting and other related work for amazing deals. They are focused to give an all-in-one package for hosting users. The package includes unbelievable ...

Asiri Gunasena

October 5, 2022

Elementor Pro 10 Features 2023, How To Speed Up Build A Website In 1000 Times?

Elementor Pro is a WordPress plugin that is excellent page builder plugin that helps to build your exited website without knowing any piece of code. Elementor is one of the ...

Asiri Gunasena

August 19, 2022

Null Design Pattern: Easy way of get default

Null Design Pattern is intentionally designed to reduce the NULL check. If there is data not available, then the pattern introduces a class with does nothing. Instead of putting if ...

Asiri Gunasena

July 4, 2022

Memento Design Pattern | You need to keep state

Memento Design Pattern introduces to captures the internal state of a given object and keeps storing it to restore into a given state of an object. This is saving the ...

Asiri Gunasena

June 20, 2022

Observer Design Pattern (99 New Notifications)

Observer Design Pattern is one of the heavily used patterns in social media. It’s because someone creates or modified something in their channel, website, or anywhere that message(Notifications) will notify ...

Asiri Gunasena

June 13, 2022

Asiri Gunasena

Once you export expdb job to backup the database table this error ORA-01555: snapshot too old: rollback segment number 12 with name might raise. Why is this error raised? One ...

Asiri Gunasena

May 12, 2023

Downloading music from YouTube is not hard work there are hundreds of web and mobile apps for downloading YouTube to mp3. But those are different from each other in quality, ...

Asiri Gunasena

April 2, 2023

When making performance improvements in your database SQL Index Usage is one of the most valuable and essential features. SQL Indexes are used to retrieve data from databases by reducing ...

Asiri Gunasena

March 13, 2023

Performance improvement is not a stick into theory. It’s the same with EXISTS vs IN keywords. It’s practical. In certain cases, EXISTS does well for subqueries rather than IN. In ...

Asiri Gunasena

March 1, 2023

SendInBlue is one of the great tools for email marketing for one who wants to do the marketing using email, SMS, and chat. This is more reliable for small and ...

Asiri Gunasena

December 22, 2022

Hostinger is a web hosting company doing hosting and other related work for amazing deals. They are focused to give an all-in-one package for hosting users. The package includes unbelievable ...

Asiri Gunasena

October 5, 2022

Elementor Pro is a WordPress plugin that is excellent page builder plugin that helps to build your exited website without knowing any piece of code. Elementor is one of the ...

Asiri Gunasena

August 19, 2022

Null Design Pattern is intentionally designed to reduce the NULL check. If there is data not available, then the pattern introduces a class with does nothing. Instead of putting if ...

Asiri Gunasena

July 4, 2022

Memento Design Pattern introduces to captures the internal state of a given object and keeps storing it to restore into a given state of an object. This is saving the ...

Asiri Gunasena

June 20, 2022

Observer Design Pattern is one of the heavily used patterns in social media. It’s because someone creates or modified something in their channel, website, or anywhere that message(Notifications) will notify ...

Asiri Gunasena

June 13, 2022

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