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Re: Query performance dramatically different

From: <sybrandb_at_yahoo.com>
Date: 1 Feb 2006 00:48:04 -0800
Message-ID: <1138783684.370496.48500@g44g2000cwa.googlegroups.com>


One thing to investigate looks to me whether the sql*plus array size settings are identical on affected systems. Oracle performs logical I/O for every array being fetched. Which results in extra logical I/O if array size is small.
I would also make sure everyone is running either FIRST_ROWS or ALL_ROWS, and you don't have different optimizer strategies involved.

Just my 2 € cents.

-- 
Sybrand Bakker
Senior Oracle DBA
Received on Wed Feb 01 2006 - 02:48:04 CST

Original text of this message

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