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EM12c “Supplied date is in the future” event post-DST fixed w/agent...
Since about an hour before the transition from daylight savings time back to standard time, I’ve noticed some events showing up in the incident manager that make it appear as though my agents are time...
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EM12cR2 ORA-20233: Agent targets cannot be directly blacked out
Here’s an annoying change Oracle implemented in EM12cR2. You can no longer directly black out an agent target through the OEM GUI interface. Attempting to do so will result in an unhelpful error...
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EM12cR2 PSU1 (12.1.0.2.1) Patch 14840279 Now Available
I just noticed that the first PSU for EM12cR2 is out. It’s under patch number 14840279, and gives us a new version for the EM12cR2 setup: 12.1.0.2.1. I’ve applied this patch without any trouble. I did...
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Benchmarking filesystem performance for Oracle using SLOB
Update: Please see Part 1.5 for updated scripts and part 2 for results. This post will cover techniques I’ve used to run SLOB (see...
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Oracle 11.2.0.3 and up now certified on Oracle Linux 6 (note 1304727.1)
According to MOS note 1304727.1, Oracle Database 11.2.0.3 and up is now certified on Oracle Linux 6.x! I’ve been waiting for this. Filed under: Database
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Benchmarking filesystem performance for Oracle using SLOB (Part 1.5):...
Minor update 20130207: Adjusted read-write testing script for three redo logs, not two. In Part 1 I described a starter methodology for using SLOB to benchmark filesystem performance for Oracle. After...
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Benchmarking filesystem performance for Oracle using SLOB (Part 2) – Results!
Update 20130212: Please consider this a work in progress. I am re-running most of these tests now using the same LUN for every filesystem to exclude storage-side variance. I am also using some...
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Collection of links, tips and tools for running SLOB
This post contains a collection of various tips and tools I have found useful for running SLOB. Where possible I’ve provided attribution for where I first learned of each tip, but some items are simply...
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SLOB.R v0.6: An R script for analyzing SLOB results from repeated runs
This post covers usage of my SLOB.R script, used to analyze SLOB results from repeated test runs. The contents of the SLOB.R script are at the bottom of this post, but first I will show the contents...
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Why your EM12cR2 FMW stack probably needs patch 13490778 to avoid OHS down/up...
MOS note 1496775.1 describes a situation with EM12cR2 where OEM will falsely report the Oracle HTTP Server instance (ohs1) as down, even though it is up. This is due to some changes in FMW 11.1.1.6....
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First Thoughts: BlueMedora’s Oracle Enterprise Manager Plugin for VMware
This post reviews the Oracle Enterprise Manager Plugin for VMware from BlueMedora. This commercial (for-fee) plugin integrates into OEM 12c to provide visibility into your VMware environment for Cloud...
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Using EM12c to set up a Data Guard physical standby database
This post will cover using EM12cR2 to create a Data Guard configuration including one primary database and one physical standby server, making use of the Data Guard broker. The application software we...
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Stale EM12c patch recommendations? Get patch 14822626
I don’t use the automated patching functionality provided by EM12c. I do, however, get value out of the patch recommendations since they serve as a good reminder when I’ve missed a patch that should...
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How to get started with genetic genealogy
This is a departure from what I usually write about, but technically it’s also about databases: GEDCOMs and genetic ones. This post will cover a general strategy to get started doing your own genetic...
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Using EM12c Compliance Rules, Standards, and Frameworks
I recently reviewed SAP note 740897 and discovered that the application-specific full use license SAP customers receive when they purchase the Oracle database through SAP includes the Database...
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My Production EM12c Upgrade From R2 (12.1.0.2) to R3 (12.1.0.3)
This post covers my production upgrade from EM12c R2 to EM12c R3 on Linux x86-64 (SLES11 SP2). To stress test the upgrade and keep it interesting, this system also has BI Publisher integrated into...
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How to connect to the default EM12c R3 self-signed WebLogic SSL port with WLST
After upgrading to Oracle Enterprise Manager 12c R3, I decided it was time to get roles configured properly for BI Publisher so that I can use it under my regular account rather than only permitting...
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How to migrate EM12c R3 OMS and repository to a new host
In order to save power in our data center, I need to migrate my EM12c R3 environment from the host where it currently runs to a new host. I have a simple configuration, with a single OMS, no load...
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SQL to query table size and DBMS_REDEFINITION progress
Like so many other Oracle DBAs, I need a script to query the total disk space used by an individual table, including the data, indexes and LOBs, that works whether or not the table uses partitioning....
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Improving security in your web browsers: Firefox
Your web browsers implement poor security by default. They do this, in large part, for interoperability reasons; if your just-downloaded new browser can’t connect to the sites you like to use, you...
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