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February 2008

Oracle hidden costs revealed, part 1 – Does a batch job run faster when executed locally?

This series is about revealing some Oracle’s internal execution costs and inefficiencies. I will analyze few situations and special cases where you can experience a performance hit where you normally wouldn’t expect to.

The first topic is about a question I saw in a recent Oracle Forum thread.

The question goes like this: “Is there any benefit if I run long sql queries from the server (by using telnet,etc) or from the remote by sql client.”

In order to leave out the network transfer cost of resultset for simplicity, I will rephrase the question like that: “Do I get better performance when I execute my server-side batch jobs (which don’t return any data to client) locally from the database server versus a remote application server or workstation?”

Oracle hidden costs revealed, part 1 – Does a batch job run faster when executed locally?

This series is about revealing some Oracle’s internal execution costs and inefficiencies. I will analyze few situations and special cases where you can experience a performance hit where you normally wouldn’t expect to.

The first topic is about a question I saw in a recent Oracle Forum thread.

The question goes like this: “Is there any benefit if I run long sql queries from the server (by using telnet,etc) or from the remote by sql client.”

In order to leave out the network transfer cost of resultset for simplicity, I will rephrase the question like that: “Do I get better performance when I execute my server-side batch jobs (which don’t return any data to client) locally from the database server versus a remote application server or workstation?”

Oracle hidden costs revealed, part 1 – Does a batch job run faster when executed locally?

This series is about revealing some Oracle’s internal execution costs and inefficiencies. I will analyze few situations and special cases where you can experience a performance hit where you normally wouldn’t expect to.

The first topic is about a question I saw in a recent Oracle Forum thread.

The question goes like this: “Is there any benefit if I run long sql queries from the server (by using telnet,etc) or from the remote by sql client.”

In order to leave out the network transfer cost of resultset for simplicity, I will rephrase the question like that: “Do I get better performance when I execute my server-side batch jobs (which don’t return any data to client) locally from the database server versus a remote application server or workstation?”

Oracle hidden costs revealed, part 1 – Does a batch job run faster when executed locally?

This series is about revealing some Oracle’s internal execution costs and inefficiencies. I will analyze few situations and special cases where you can experience a performance hit where you normally wouldn’t expect to.

The first topic is about a question I saw in a recent Oracle Forum thread.

The question goes like this: “Is there any benefit if I run long sql queries from the server (by using telnet,etc) or from the remote by sql client.”

In order to leave out the network transfer cost of resultset for simplicity, I will rephrase the question like that: “Do I get better performance when I execute my server-side batch jobs (which don’t return any data to client) locally from the database server versus a remote application server or workstation?”

Excellent article on Oracle 11g PL/SQL function result cache

I have so far avoided writing such pointer blog posts which only refer you to another article, but I have to do it with this one. Adrian Billington has written an excellent article on performance of Oracle 11g PL/SQL function result cache. His article is a good example of a thorough, well organized and well written technical content. I really enjoyed reading it and thanks to his thoroughness, he has just saved me some precious time doing that research on my own.

Excellent article on Oracle 11g PL/SQL function result cache

I have so far avoided writing such pointer blog posts which only refer you to another article, but I have to do it with this one. Adrian Billington has written an excellent article on performance of Oracle 11g PL/SQL function result cache. His article is a good example of a thorough, well organized and well written technical content. I really enjoyed reading it and thanks to his thoroughness, he has just saved me some precious time doing that research on my own.

Excellent article on Oracle 11g PL/SQL function result cache

I have so far avoided writing such pointer blog posts which only refer you to another article, but I have to do it with this one. Adrian Billington has written an excellent article on performance of Oracle 11g PL/SQL function result cache. His article is a good example of a thorough, well organized and well written technical content. I really enjoyed reading it and thanks to his thoroughness, he has just saved me some precious time doing that research on my own.

Excellent article on Oracle 11g PL/SQL function result cache

I have so far avoided writing such pointer blog posts which only refer you to another article, but I have to do it with this one. Adrian Billington has written an excellent article on performance of Oracle 11g PL/SQL function result cache. His article is a good example of a thorough, well organized and well written technical content. I really enjoyed reading it and thanks to his thoroughness, he has just saved me some precious time doing that research on my own.