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Performance problems on a table that has hundreds of columns including LOBs (Doc ID 1292685.1)

Last updated on JULY 06, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 and later
Information in this document applies to any platform.

Symptoms

A user created a table with 890 columns of which 260 are CLOB's.
There are hundreds of thousands of rows.
The table is multiple GB in size
The average row length times the number of rows is 500+MB

Performance improves after Export / Import, but the performance degrades after several thousand rows are added.

Changes

Increases in stored user data 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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