Fix Invalid Or Unusable Index in Oracle

Being Master of RDBMS world. We must aware of Index on the database. Indexes play an important role in the life of Database management.  Today we are going to have look at the steps which we use to “Fix Invalid Or Unusable Index“. Let’s have look at the steps. Check Unusable or Invalid Index:

Rebuild […]

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ORA-01450: maximum key length (3215) exceeded

Today we are going to have look on the topic of the Rebuilding index. In this post we are going to learn why do we need rebuilding the index? It explains the steps we use to solve the error. While we rebuild the index we face the problem.

Solution: The issue was fixed with rebuilding the […]

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What happens in the background in Rebuild Index

I must thank my fellow DBA Franky Weber Faust for his publication in his blog. I’ll show you what happens during an online rebuild of an index. Few DBAs realize this, but during this operation an auxiliary index (among other things) is created to store the transient data while the application continues to run normally. Note that for […]

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Move tables (online / offline) in Oracle (9i-12cR2)

I must thank my fellow DBA Franky Weber Faust for his publication in his blog.  The goal here is to share the procedures for performing the move of tables in Oracle Database from version 9i to version 12cR2. Here in this article I am using 12cR2 (12.2.0.1) to also be able to demonstrate the features […]

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Index (B-tree)

B-tree Index B-tree stands for Balanced Tree in RDBMS. It is commonly used in database and filesystem.The B-tree enables the database to find a leaf node quickly. It is a good example of a data structure for external memory. Telephone directory, library are the best example of B-tree index.   Why do we use B-tree? keeps keys in […]

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IOT

IOT Index IOT stands for Index Organised Table in oracle database.The idea behind an IOT is simple. You hold all the data for the table in the ordered structure of an index. Why do we use IOT? An IOT has the structure of an index and stores all the columns of the row, accesses via […]

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Index In Oracle

We are living on the planet with the seven billion population.Each and every human being’s have some information. Data is an important factor in the business’s world.  Every day in business’s operation we deal with data. It can be structure and un-structure data. All the report of business prepare with the help of data. We take a […]

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