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Luca's blog on data engineering, data platforms, and performance.

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Monday, May 21, 2012

SQL Patch and Force Match

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Discussion on how to create sql_patch with force_match=true in Oracle 11g and related topics. SQL patches have recently saved the day for ...
Monday, May 14, 2012

V$EVENT_HISTOGRAM_METRIC

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V$EVENT_HISTOGRAM_METRIC does not exist (at least up to 11.2.0.3) however it could be handy! The idea is combine the detailed information f...
Monday, May 7, 2012

Performance Metrics Views

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Topic: GV$ views of the ' metrics family ' and how they can help in tuning + links to scripts I use. Oracle has plenty of instrum...
Monday, April 30, 2012

Of I/O Latency, Skew and Histograms 2/2

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Case: This is part 2/2 of a performance investigation. In the previous part we have seen how the sudden increase of single block read laten...
Thursday, April 26, 2012

Of I/O Latency, Skew and Histograms 1/2

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This is a performance investigation of Oracle DB and interaction with storage.  Case: DB operations are slow during backup. The system...
Wednesday, April 18, 2012

Uno

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This is the first entry of this blog. Just to see if all works and to tune the layout. The blog will cover Oracle and databases. In particul...
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Luca Canali
Geneva, Switzerland
@LucaCanaliDB

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