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You're reading from  Oracle Database 11gR2 Performance Tuning Cookbook

Product typeBook
Published inJan 2012
Reading LevelIntermediate
PublisherPackt
ISBN-139781849682602
Edition1st Edition
Languages
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Author (1)
Ciro Fiorillo
Ciro Fiorillo
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Ciro Fiorillo

Ciro Fiorillo is an IT professional and consultant with experience of more than a decade in different roles (developer, analyst, DBA, project manager, data and software architect) among software industries. He has worked on different technologies and architectures, such as Oracle, SQL Server, Delphi, C# and .NET Framework, C/C++, Java, PHP, COBOL, Fortran, and Tibco. Ciro is currently employed as Lead Software and Data Architect with FinWin Srl, a software house specializing in banking and loans applications. As a freelancer he writes articles for websites and printed magazines about software and computing, participates in workshops, and teaches C++ and Fortran parallel programming with Intel Software tools. Ciro can be reached at ciro@cirofiorillo.com.
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DBA_TAB_HISTOGRAMS


This view describes histograms on all the tables and views generated when collecting statistics using the ANALYZE statement or DBMS_STATS package. There are the equivalent views ALL_TAB_HISTOGRAMS and USER_TAB_HISTOGRAMS; the first contains information on all the objects accessible by the current user, the last on the current user objects in the database.

Fields

The most relevant view fields are as follows:

  • OWNER: The owner of the table

  • TABLE_NAME: The name of the table

  • COLUMN_NAME: The name of the column

  • ENDPOINT_NUMBER: The histogram bucket number

  • ENDPOINT_VALUE: The normalized endpoint value for the bucket

  • ENDPOINT_ACTUAL_VALUE: The actual endpoint value (not normalized) for the bucket

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Oracle Database 11gR2 Performance Tuning Cookbook
Published in: Jan 2012Publisher: PacktISBN-13: 9781849682602

Author (1)

author image
Ciro Fiorillo

Ciro Fiorillo is an IT professional and consultant with experience of more than a decade in different roles (developer, analyst, DBA, project manager, data and software architect) among software industries. He has worked on different technologies and architectures, such as Oracle, SQL Server, Delphi, C# and .NET Framework, C/C++, Java, PHP, COBOL, Fortran, and Tibco. Ciro is currently employed as Lead Software and Data Architect with FinWin Srl, a software house specializing in banking and loans applications. As a freelancer he writes articles for websites and printed magazines about software and computing, participates in workshops, and teaches C++ and Fortran parallel programming with Intel Software tools. Ciro can be reached at ciro@cirofiorillo.com.
Read more about Ciro Fiorillo