How to Oracle Change Column Data Type 6 Examples
This simple article describes how Oracle change column data type in different ways. First, I will explain simple syntax for changing column properties. Then, I plan to explain how to ...
Asiri Gunasena
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Best 13 Simple Tips to Performance Tuning in Oracle
This is related to simple tips for Performance Tuning in Oracle. But those tips may have a huge effect on big databases that have millions of records in a table. ...
Asiri Gunasena
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how to use Date in WHERE Clause Oracle 2025+
Oracle where condition doing the filtering data in a table according to condition but date in where clause oracle is bit special, because of bad performance. Oracle indexes like range ...
Asiri Gunasena
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Oracle FORALL Performing High Now
Oracle FORALL statement is introduced for executing multiple DML operations in a single SQL switch. This is comparatively faster than for loop statements. DML statements like INSERT, UPDATE, or DELETE ...
Asiri Gunasena
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Bulk Collect in Oracle Fastest Ever Now
After introducing bulk collect in Oracle it is reduced the context switch between PL/SQL and SQL execution engines when selecting data from the Oracle database. If you need to fetch ...
Asiri Gunasena
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Oracle sql Interview Questions | 11 New Index Qustions
This is the second article related to Interview Questions on Oracle sql Interview Questions and this is focused on the Oracle index. If you are a programmer you have to ...
Asiri Gunasena
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Top 10 Oracle Performance Tuning Interview Questions – First Lesson
Database knowledge is a must for programmers. Oracle Performance Tuning Interview Questions below surely improve knowledge of the database. If you are a University student of programming, a beginner of ...
Asiri Gunasena
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How to Master Oracle SQL Connect by Hierarchical Queries
If you have a table or multiple tables with hierarchical data then use Oracle SQL connect by to select complete structing using a single query. This is a big benefit ...
Asiri Gunasena
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