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Saturday, November 30, 2013

UKOUG Tech13, Latency Investigations and Lost Writes

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I am looking forward to participating again to the  UKOUG annual conference . This year I will present together with my colleague Marcin Bla...
Monday, October 28, 2013

Daylight Saving Time Change and AWR Data Mining

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Topic: this article is about a tip for Oracle 11.2 and higher on how to handle DST change when querying directly the AWR repository. In add...
Tuesday, September 10, 2013

Getting Started with PyLatencyMap: Latency Heat Maps for Oracle, DTrace and More Sources

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Topic: this is a getting-started article for  PyLatencyMap , a performance tool for real-time investigation and troubleshooting of latency ...
Tuesday, August 27, 2013

PyLatencyMap, a Performance Tool for Latency Data Visualization

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Topic: this post is about PyLatencyMap, a performance-oriented tool I have written for command-line drill down of latency data, integrating...
Monday, June 24, 2013

DTrace Explorations of Oracle Wait Events on Linux and Solaris

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DTrace is a great tool to measure and investigate latency for performance troubleshooting. DTrace is now coming to the Linux platform too a...
2 comments:
Thursday, May 30, 2013

OraLatencyMap v1.1 and Testing I/O with SLOB 2

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Topic: OraLatencyMap v1.1 is an updated versions of a performance tool aimed at collecting and displaying Oracle wait event histogram data a...
Wednesday, May 8, 2013

Oracle Events' Latency Visualization and Heat Maps in SQL*plus

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Topic: This post is about a technique for Oracle performance tuning, the use of heat maps to investigate wait event latency (and in partic...
11 comments:
Monday, March 25, 2013

Testing Lost Writes with Oracle and Data Guard

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Topic: This post is about lost writes in Oracle, on techniques for reproducing and investigating the effects of lost writes and on the use ...