Extensive Elapsed Time for ASH Report

The other day I had a customer who was to send me an ASH report after there was a challenge in providing me EM Diagnostics from their repository database.  After the report hadn’t been submitted after a number of days, the customer admitted that they would execute an ASH report request and would subsequently kill […]

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March 10, 2016

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Displaying CPU Graphs For Different Time Ranges in Enterprise Manager

This question was posted in Twitter from @matvarsh30, who asked, “How can I display CPU usage over different periods of time for databases in Enterprise Manager?” Everyone loves their trusty Top Activity, but the product’s functionality is limited when it comes to custom views and this is what our user had run into. There are […]

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Recommendations to Address Cloud Performance Issues via EM12c

So I’m going to start this post with an admission-  I don’t have access to a cloud environment to test this out, but I know what I would do first if I experienced slow response time on database creation or cloning via EM12c to the cloud and I would like to at LEAST post what […]

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September 15, 2015

Creating a Trace File from EM12

Creating a trace file from EM12c is quite easy and doesn’t require a DBA offering up the world to allow a developer or support person to perform this action. Enterprise Manager also removes some of the syntax options that could get a developer or app support person that is less specialized in creating trace files, all […]

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SQL ID Specific Performance Information

When you need to have information about one SQL_ID and don’t need everything and the kitchen sink, there are a few different ways to collect this via Oracle.  I’m surprised how rarely this is covered in performance tuning/optimization, (whatever the current “acceptable” term is for fixing a database when there are performance issues arise… J)  […]

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May 18, 2015

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Distributed Transactions and EM12c Page Performance

While presenting at HotSos in Dallas, Tx, an attendee, (thank you Wenju! :)) asked how page performance issues could be identified when the call was being made remotely and not from the Oracle Management  Repository, (OMR) using the Page Performance console within Cloud Control. This is a very good question and although not straight forward, […]

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March 5, 2015

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How to Use an ASH Report and Why

Active Session History, (ASH) reports are one of my favorite when investigating a performance issue.  The biggest challenge I think that faces many administrators is to know when to turn to an ASH report and how to use the report to diagnose an issue. Today’s example is brought to us thanks to a Workload replay […]

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February 9, 2015

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EM12c and the Optimizer Statistics Console

Today we’re going to review another great feature in the EM12c that you may not have realized was available.  Once logged into a database target, click on the Performance menu and navigate to the Optimizer Statistics Console: Optimizer Statistics Console Page The new console page is clean, easy to navigate and has great access points […]

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EM12c Management Agent, OutOfMemoryError and Ulimits

While enjoying the lovely Liverpool, UK weather at Tech14 with UKOUG, (just kidding about that weather part and apologies to the poor guy who asked me the origin of “Kevlar” which in my pained, sleep-deprived state I answered with a strange, long-winded response…. :)) a customer contacted me in regards to a challenge he was […]

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OMS and OMR Performance- Part III, Metrics Page

Before heading off to UKOUG’s Tech 14 conference, thought I would jump back from the Agents performance page and look into the very important page in the Oracle Management Service, (OMS) and Oracle Management Repository, (OMR) regarding metrics.  Standard metrics collection is demanding in itself, so when we add plugins, metric extensions and manual metric […]

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December 4, 2014

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