Yes, this is for my RMOUG abstract reviewers, but it may help other conferences and user groups, too. We have some incredible content at RMOUG, (Rocky Mtn. Oracle User Group) Training Days conference and its all due to a very highly controlled, thought out process that has evolved over time to ensure that we have an abstract selection process that is as fair as possible and offers new speakers opportunities as well. I’m going to share my abstract scoring summary with the rest of the class to start, so you get an idea of how we score. As a strong…
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We are deep into RMOUG’s abstract submissions and reviews, preparing for the following: Oct. 2nd- Close of Abstract Submissions Oct. 6th- Close of Abstract Reviews Oct. 10th- Schedule up for 2015 Training Days With this weighing so heavily on my mind, I felt it might be a good time to put down on paper why I’m so proud of how RMOUG does it’s reviews and why this conference has such a great lineup. This not only should tell you why you should submit or attend, but if you are considering submitting an abstract, it can help you submit a better…
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This may not come up very often, but for some reason, an administrator might have to reconfigure an EM12c environment to NOT use load balancers. This could be due to: 1. Hardware Issue on the Load Balancers 2. Mis-configured Load Balancers 3. Re-allocation of Load Balancer hardware for other purposes. Whatever the reason may be, I noted that the instructions to set up the load balancers are easy to find, but not so clearly found are how to configure the EM12c environment to not use the load balancers once they’ve been put in place. To revert back to non-load balancer…
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I will be in San Francisco a little early this year and as I’m not longer an ACE Director, it’s to attend the IOUC, (International Oracle User Conference) at Redwood Shores on Sept. 25th and 26th. I’ll be representing RMOUG for the two day event that has representatives from user groups from all over the world. Our lovely host, Mary Lou Dopart and her team, will ensure we have another great year learning how we can provide the best user group for our members in the Oracle community. After the a lovely weekend in San Francisco with friends, I’ll be…
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This is going to be a “KISS”, (Keep it Simple, Silly) post. I was offered a second Windows cluster to test on when my original one was required for QA. It was a gracious offer, but I also found out why a cluster should be kept simple and this cluster was anything but simple. Many times, issues are created and we’ll never see them coming until we go through the pain and the EM12c on this cluster has been both “educational” and painful. The failover cluster is a Windows 2008 server with three Central Access Points, (CAP). Each CAP has…
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I believe you do your best when you follow in what you believe. Kellyn’s #ALSIceBucketChallenge …. Hold the ice…:) https://www.youtube.com/watch?v=cawQjZRCyok
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When installing Enterprise Manager 12c, the host value can come from a number of places for different applications/tiers. For most, it comes from the environment variable $ORACLE_HOSTNAME, (for Windows Servers, %ORACLE_HOSTNAME%). The OHS1 target, aka Oracle Apache in the middle tier of the EM12c environment pulls it’s value from the etc/hosts file, (for Unix as well as Windows) and so it is vulnerable with a virtual host name or host name change occurs. It can, however, be updated post installation when the OHS1 target fails to return an active status in the EM12c console. Update the Configuration File The file…
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As much as KSCOPE 14 fixed any and all Low-T levels, it couldn’t do anything for our the WiFi problems we were experiencing back in May. I’ve been a telecommuter for almost 4 straight years now and was quite frustrated when our WiFi service became dismal back then. We called Comcast service and worked through trouble-shooting with their support multiple times, only afterward, still unable to download files or watch Netflix into the first three weeks of June. Tim purchased a new modem after Comcast confirmed our model was at “end of support” and yet, still no improvement. After more…
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This post is to address a failed Weblogic start in EM12c. The fix is performed on a Windows host, but the fix can easily be for any EM12c environment that experiences this issue. In the below instructions, just replace the %OMS_BASE% for Windows Env Var to $OMS_BASE for Linux/Unix. Issue: OMS Fails to Start and Points to Weblogic Issue in EMGC_OMS1.out File. Error in Out File: <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: weblogic.ldap.EmbeddedLDAPException: Empty initial replica Reason: Failure on create domain from template step, aka “Emplty Initial Replica” How to resolve: 1. Stop all Oracle processes/services on the host.…
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I know, I know- none of you are using Microsoft Windows. This is why I get so many questions on this topic and why there is so much interest in a white paper that no one thought I needed to write. Well, while that pesky ol’ white paper is in review, I’m going to go onto a secondary topic of how to monitor a Microsoft Active/Passive cluster with Enterprise Manager 12c, release 4. There are some disclaimers I’m going to put in this blog post- 1. monitoring a clustered host is not explicitly stated as not supported with EM12c, but…
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When concurrency is the crippling factor in a database performance issue, often I’m told that viewing blocked sessions in Enterprise Manager is difficult. The query behind, along with flash image generation in any Enterprise Manager can take considerable time to render and no matter how valuable the view is, the wait is something DBAs just can’t hold out for when needing the answer now. Blocking Sessions View in OEM If you’re wondering which feature I’m speaking of, once you log into any database, click on Performance, Blocking Sessions. If there aren’t any or any significant load on the database, it…
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So the AWR Warehouse patches are out, but documentation has not officially caught up to it yet, so as we appreciate your patience. I thought I would post about what I went over in my webinar last week when I had the wonderful opportunity to speak to the ODTUG members on this feature that everyone is so anxious to get their hands on. Let’s start with some of the top questions: 1. Can I just load the AWR data into the OMR, (Enterprise Manager Repository) database? A. No, it is highly recommended that you do not do this- use a…
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The webinar is over, but you haven’t missed out on everything I presented on the console feature, under the hood and behind the scenes! You can access the slides from today’s presentation, as I’ve uploaded them to slideshare and the scripts are easy to locate on the scripts page here on DBAKevlar. Thanks to everyone who attended and a big thanks to GP for doing the introduction and ODTUG for hosting us! 🙂
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We went over a few of the Java “tuning” options last time, so let’s go onto the OMS tier for this post. Location, Location, Location High latency issues between the OMS(Service) and the OMR, (Repository) when separated by geographical location is common. It’s important when designing the Enterprise Manager environment that you keep your OMS hosts close to the repository hosts geo-locationally. Your agents can be global, with minor network considerations, but the OMS and OMR should always be planned for one geo-location, (preferably one datacenter location.) Number of Users Sizing the OMS based on number of concurrent users might…
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I’ve already talked about the recommendations we make for properly sizing an Enterprise Manager 12c and many already know about tuning a database, but let’s look at the tuning that may be a bit foreign to DBAs. We’ll start with Java. We all know that it’s part of the EM12c architecture, but we often don’t realize that it requires attention to assist in Enterprise Manager running efficiently. JAVA Updates The Java component of the Enterprise Manager stack must be maintained- which includes applying java updates and also including the JAVA timezone information, which is so often overlooked. The JAVA TZUpdater…
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I am a long time supporter of Samsung products- I’ve always had Samsung phones, (currently a Note 3 owner…) Samsung TVs, monitors and even have a Samsung microwave and refrigerator. I love Samsung products and this has included my tablets, recently deciding to upgrade my Samsung Note 10.1, (original) for a Samsung Note Pro 12.2. I have nothing against Apple/Mac products. I think they are great, but I’m a long time user of Windows, (it really does what I need…) and I have always loved Android OS. When it came to the Samsung Note Pro 12.2, I found the size…
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Until OEM11g, it was very common that all folks were either Super Administrators or Administrators and only a few shops took the time to create roles outside of these two essential roles. Super Administrator, (SA) was pretty straight forward- the SA had essentially the same access as the repository owner and should only be allocated to those that should have this deep access to the Enterprise Manager environment, but administrator access was more of a mystery. This was assigned to anyone who wasn’t considered for SA rights and we often called it good. With Enterprise Manager 12c, there was a…
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I often hear, “My EM12c environment is slow!” and I just as often am granted access to the environment and find out that EVERYTHING is running on an old single core server with 2Gb of RAM someone found lying around. Enterprise Manager is often an after thought to many IT organizations. After all the work has gone into the production environments that build revenue, there is often a disconnect on how important information on the health and status of those revenue machines are, resulting in Enterprise Manager receiving the “cast off” servers for their hosted environment. So today we are…