Liron Amitzi Oracle ACE

Oded Raz Oracle ACE Director

Category archives for: Tips & Tricks

Oracle 11g Performance Features

Oracle 11g Performance Features

Oracle 11g brings us many performance related features. In this article we will cover several of these features.

Replicating virtual machines with Oracle databases

Replicating virtual machines with Oracle databases

Virtual machines are used in many organizations due to the simplicity of administration, especially in development environments.

This post will describe how to configure the new replicated machine to work with the Oracle database.

Oracle Wait Event – db file sequential read

Oracle Wait Event – db file sequential read

db file sequential read is an important and common wait event in Oracle databases. We’ll try to understand what it means.

Oracle Wait Event – db file scattered read

Oracle Wait Event – db file scattered read

db file scattered read is an important and common wait event in Oracle databases. We’ll try to understand what it means.

Analyzing Oracle AWR reports – top 5 events

Analyzing Oracle AWR reports – top 5 events

This is the first post related to analyzing AWR reports. We will focus on the “top 5 events” of the page, what is the importance of this part and understanding some of the main wait events.

Determine query for Linux process

Determine query for Linux process

In this article we will demonstrate how to retrieve the SQL statement of the most CPU consuming process in Linux/Unix

Oracle – How to kill orphan sessions easily

Oracle – How to kill orphan sessions easily

In this article we’ll see a script that will help developers to kill applicaitions orphan sessions, even on RAC environment.

Creating Multiple AWR reports

Creating Multiple AWR reports

Analyzing AWR (Automated Workload Repository) is a common operation while doing a performance and tuning sessions on a database instance.

Oracle Associative Arrays

Oracle Associative Arrays

Working with arrays in PL/SQL is not very complicated, this is a sequence of cells we can access by their index.

Sometimes, all we need is to get a value from an index we have, and this index is not a sequence number, but a number that has meaning or even text.

Bitwise Operators in Oracle

Bitwise Operators in Oracle

Working with bit size variables and bitwise operators is quite common in programming, but less common in databases. In Oracle, there is not even a bit datatype. How can we work with bits in Oracle?

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