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  • June IOUG events

    - by Mandy Ho
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Independent Oracle User Group (IOUG) Regional Events: June 11-12, 2012 – Broomfield, CO 2-Day Seminar- “ High Performance PL/SQL & Oracle Database 11g New Features” Steven Feuerstein, generally considered the world’s leading PL/SQL expert, will be presenting his all-new, 2-day, “Higher Performance PL/SQL and Oracle 11g PL/SQL New Features” seminar on June 11 & 12 at Level 3 Communications in Broomfield, Colorado.  This will be Steven’s first Denver seminar in almost 4  years.  Who knows when he will offer another? http://www.rmoug.org/ June 14, 2012 – Ottawa, Ontario Pythian’s Gwen Shapira puts on 3 great presentations focused on NoSQL, making OLTP run fast and Big Data. http://www.oug-ottawa.org/pls/htmldb/f?p=327:27:1317735724699447::NO June 21, 2012 – Calgary, Alberta Big Data and Extreme Analytics Summit http://coug.ab.ca/ June 22, 2012 – Westborough, MA 10 Things You Probably Did Not Know? With Tom Kyte PL/SQL turns 23 years old this year. It was first introduced in 1988 with Oracle6 Database. This session looks at five technical things about PL/SQL you probably did not know: under-the-covers features that make PL/SQL quite simply the most efficient language with which to process data in the database. http://noug.com/  June 28/29, 2012 – Plano, Texas Jonathan Lewis Oracle Performance Seminars The DOUG (DALLAS ORACLE USERS GROUP) has invited SpeakTech to return to Dallas, and they’re bringing Jonathan Lewis! Topics are Beating the Oracle Optimizer – June 28, 2012, Trouble Shooting & Tuning – June 29, 2012 http://www.eventbrite.com/event/3082448687

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  • Terminal will not accept password / terminale non accetta password

    - by elvizz67
    Translation, by Google Translate: I just installed lxde Lubuntu errrato and a terminal command I locked the package management and updates, after erasing software from sources I typed the wrong command sudo apt-get upgrade pero'il terminal asks me the password and the keyboard is not me accept any command. What should I do to unlock? Original text: Ho appena installato lubuntu lxde e per una errrato comando il terminale mi ha bloccato la gestione pacchetti e aggiornamenti, dopo avere cancellato dalle fonti software il comando sbagliato ho digitato sudo apt-get upgrade pero'il terminale mi chiede la password e la tastiera non mi accetta nessun comando. cosa devo fare per sbloccare ?

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  • Join Oracle Database at Microsoft TechEd next week.

    - by Mandy Ho
    For the past nine years, Oracle has been a proud sponsor of Microsoft TechEd. TechEd is Mircosoft's premier technology conference for IT professionals and developers. This year, Oracle will demonstrate its latest database software for MS Windows, including Oracle Database 11g Enterprise and Express editions, TimesTen and MySQL.  Developers can learn how to develop .Net applications for the Oracle Database using the latest technologies, such as Entity Framework, LINQ and WCF Data Services. Attendees can also learn the new MySQL features enabling rapid installation, GUI Based application design, backup & recovery and much more within a Windows environment. Oracle will have a BOF (Birds of a Feather Session) on Tuesday, June 12, from 3:15 to 4:30. The topic will be Big Data: The Next Frontier for Innovation, Competition and Productivity. Otherwise you can visit Oracle everyday during the expo hours from Mon, June 11 to Thursday, June 14 at our booth #613. Talk to experts on TimesTen and MySQL on Windows and .NET. Also, we will have our 3D interactive demos on Oracle's engineered systems showing off Oracle Exadata, Database Appliance and more. Visit  http://northamerica.msteched.com/ for more information. 

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  • How to change circular icon to indicate chosen session in unity-greeter?

    - by Chan-Ho Suh
    In Precise (12.04), when I login to lightdm, using the unity-greeter, there's a white circle by my name. For the standard DEs like Unity or XFCE, the circle has a representative icon (Ubuntu symbol or little mouse resp.). I have a session for Awesome window manager which was added when I installed Awesome, but it just shows a blank white circle. I'd like to know how to add an icon to it, or at least some indicator, as unity-greeter doesn't show you what session is set until you click on the circle. I found another question about changing the session names. The answer for it said to change the names in the desktop files in /usr/share/xsessions. Unfortunately, while there is an icon field in those desktop files, they are all blank (Caveat: I no longer have Unity installed, so maybe the Unity one would not be blank. But the Xubuntu desktop file has it blank even though the icon shows in unity-greeter). Update: Here's the png I use as a badge for Awesome. It's not great, but looks reasonably nice: []

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  • I'm a CS student, and honestly I don't understand Knuth's books..

    - by Raymond Ho
    I stumbled this quote from Bill Gates: "You should definitely send me a resume if you can read the whole thing." He was talking about The Art of Programming books.. So I was pretty curious and want to read it all but honestly, I don't understand it at all.. I'm really not that highly intellectual being.. So this should be the reason why I can't understand it, but I am eager to learn.. I'm currently reading volume 1 about fundamental algo.. So is there any books out there that are friendly to novice/slow people like me? So I can build up myself and hopefully in the future I can read Knuth's book at ease..

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  • I'm a CS student, and honestly, I don't understand Knuth's books

    - by Raymond Ho
    I stumbled upon this quote from Bill Gates: "You should definitely send me a resume if you can read the whole thing." He was talking about The Art of Programming books. So I was pretty curious and want to read it all. But honestly, I don't understand it. I'm really not that intellectual. So this should be the reason why I can't understand it, but I am eager to learn. I'm currently reading Volume 1 about fundamental algorithms. Are there any books out there that are friendly for novices/slow people like me, which would help to build up my knowledge so that I can read Knuth's book with ease in the future?

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  • Oracle Spatial and Graph – A year in review

    - by Mandy Ho
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} What a great year for Oracle Spatial! Or shall I now say, Oracle Spatial and Graph, with our official name change this summer. There were so many exciting events and updates we had this year, and this blog will review and link to some of the events you may have missed over the year. We kicked off 2012 with our webinar: Situational Analysis at OnStar with Oracle Spatial and Graph. We collaborated with OnStar’s Emergency Strategy and Outreach expert, Jeff Joyner ,on how Onstar uses Google Earth Visualization, NAVTEQ data and Oracle Database to deliver fast, accurate emergency services to its customers. In the next webinar in our 2012 series, Oracle partner TARGUSinfo showcased how to build a robust, scalable and secure customer relationship management systems – with built-in mapping and spatial analysis, and deployed in the cloud. This is a very cool system using all Oracle technologies including Oracle Database and Fusion Middleware MapViewer. Attendees learned how to gather market insight, score prospects and customers and perform location analysis. The replay is available here. Our final webinar of the year focused on using Oracle Business Intelligence tools, along with Oracle Spatial and Graph to perform location-aware predictive analysis. Watch the webcast here: In June, we joined up with the Location Intelligence conference in Washington, DC, and had a very successful 2012 Oracle Spatial User Conference. Customers and partners from the US, as well as from EMEA and Asia, flew in to share experiences and ideas, and get technical updates from Oracle experts. Users were excited to hear about spatial-Exadata performance, and advances in MapViewer and BI. Peter Doolan of Oracle Public Sector kicked off the event with a great keynote, and US Census, NOAA, and Ordnance Survey Great Britain were just a few of the presenters. Presentation archive here. We recognized some of the most exceptional partners and customers for their contributions to advancing mainstream solutions using geospatial technologies. Planning for 2013’s conference has already started. Please contribute your papers for consideration here. http://www.locationintelligence.net/ We also launched a new Oracle PartnerNetwork Spatial Specialization – to enable partners to get validated in the marketplace for their expertise in taking solutions to market. Individuals can also get individual certifications. Learn more here. Oracle Open World was not to disappoint, with news regarding our next Oracle Spatial and Graph release, as well as the announcement of our new Oracle Spatial and Graph SIG board! Join the SIG today. One more exciting event as we look to 2013. Spatial and location technologies have a dedicated track at the January BIWA SIG Summit – on January 9-10 in Redwood Shores, CA. View the agenda and register here: www.biwasummit.org. We thank you for all your support during the year of 2012 and look towards an even more exciting 2013! Wishing you and your family a prosperous New Year and Happy Holidays!

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  • Redirect/Rewrite Subdomain to Subfolder

    - by Laurent Ho
    I'm trying to redirect a subdomain to a subfolder e.g. forums.domain.com to www.domain.com/forums Note that I started the forums in the subfolder format but worried that members might mistakenly try to access the forums using the subdomain format. RewriteCond %{HTTP_HOST} ^(www\.)?forums\.domain\.com RewriteRule .* /forums [L] From what I read the codes above should work through .htaccess, but do I still need to create a DNS A record to point to the IP address of the server?

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  • How do I stop video tearing? (Nvidia prop driver, non-compositing window manager)

    - by Chan-Ho Suh
    I have that problem which seemingly afflicts many using the proprietary Nvidia driver: Video tearing: fine horizontal lines (usually near the top of my display) when there is a lot of panning or action in the video. (Note: switching back to the default nouveau driver is not an option, as its seemingly nonexistent power-management drains my battery several times faster) I've tried Totem, Parole, and VLC, and tearing occurs with all of them. The best result has been to use X11 output in VLC, but there is still tearing with relatively moderate action. Hardware: MacBook Air 3,2 -- which has an Nvidia GeForce 320M. There are two common fixes for tearing with Nvidia prop drivers: Turn off compositing, since Nvidia proprietary drivers don't usually play nice with compositing window managers on Linux (Compiz is an exception I'm aware of). But I use an extremely lightweight window manager (Awesome window manager) which is not even capable of compositing (or any cool effects). I also have this problem in Xfce, where I have compositing disabled. Enabling sync to VBlank. To enable this, I set the option in nvidia-settings and then autostart it as nvidia-settings -l with my other autostart programs. This seems to work, because when I run glxgears, I get: $ glxgears Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 303 frames in 5.0 seconds = 60.500 FPS 300 frames in 5.0 seconds = 59.992 FPS And when I check the refresh rate using nvidia-settings: $ nvidia-settings -q RefreshRate Attribute 'RefreshRate' (wampum:0.0; display device: DFP-2): 60.00 Hz. All this suggests sync to VBlank is enabled. As I understand it, this is precisely designed to stop tearing, and a lot of people's problem is even getting something like glxgears to output the correct info. I don't understand why it's not working for me. xorg.conf: http://paste.ubuntu.com/992056/ Example of observed tearing::

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  • Update linux kernel image, How can I do it in safe? (how to revert)?

    - by Kit Ho
    based on this post , i am trying to update my kernel from 2.6.32 to 2.6.35 as my intel video card doesn't work. However, I am very afraid that my update would cause my computer crash and lost all the thing.(does not function , esp for video) I am using ubuntu 10.04, currently version is 2.6.32-40-generic. Does anyone try to update to 2.6.35-32??? If in case it make crash? how can i revert back to 2.6.32??? Thanks Kit

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  • smtp.gmail.com from bash gives "Error in certificate: Peer's certificate issuer is not recognized."

    - by ndasusers
    I needed my script to email admin if there is a problem, and the company only uses Gmail. Following a few posts instructions I was able to set up mailx using a .mailrc file. there was first the error of nss-config-dir I solved that by copying some .db files from a firefox directory. to ./certs and aiming to it in mailrc. A mail was sent. However, the error above came up. By some miracle, there was a Google certificate in the .db. It showed up with this command: ~]$ certutil -L -d certs Certificate Nickname Trust Attributes SSL,S/MIME,JAR/XPI GeoTrust SSL CA ,, VeriSign Class 3 Secure Server CA - G3 ,, Microsoft Internet Authority ,, VeriSign Class 3 Extended Validation SSL CA ,, Akamai Subordinate CA 3 ,, MSIT Machine Auth CA 2 ,, Google Internet Authority ,, Most likely, it can be ignored, because the mail worked anyway. Finally, after pulling some hair and many googles, I found out how to rid myself of the annoyance. First, export the existing certificate to a ASSCII file: ~]$ certutil -L -n 'Google Internet Authority' -d certs -a > google.cert.asc Now re-import that file, and mark it as a trusted for SSL certificates, ala: ~]$ certutil -A -t "C,," -n 'Google Internet Authority' -d certs -i google.cert.asc After this, listing shows it trusted: ~]$ certutil -L -d certs Certificate Nickname Trust Attributes SSL,S/MIME,JAR/XPI ... Google Internet Authority C,, And mailx sends out with no hitch. ~]$ /bin/mailx -A gmail -s "Whadda ya no" [email protected] ho ho ho EOT ~]$ I hope it is helpful to someone looking to be done with the error. Also, I am curious about somethings. How could I get this certificate, if it were not in the mozilla database by chance? Is there for instance, something like this? ~]$ certutil -A -t "C,," \ -n 'gmail.com' \ -d certs \ -i 'http://google.com/cert/this...'

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  • How to adjust SQL LIKE function?

    - by slave016
    I want to make this kind of query: create procedure something @name varchar(13) as begin select * from WORKER where NAME LIKE "%@name%" end For input @name=ho, I want output every row that contains NAME wich sounds "ho", for example HOuse, soHO, broHOw...

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  • How do you install a USB CD Rom drive?

    - by Matt Allen
    Hello, I recently purchased a USB CD ROM drive, but I don't know how to get it to work with my computer which runs Ubuntu 10.04. http://www.amazon.com/gp/product/B00303H908/ref=oss_product When I issue the lsusb command, it shows up as: Bus 002 Device 016: ID 05e3:0701 Genesys Logic, Inc. USB 2.0 IDE Adapter The computer doesn't recognize it automatically. How can I get this drive to show up as an actual drive on my computer? If this particular drive can't handle Linux, can you recommended one which can and provide a link to it so I can purchase it? Thanks! Update: I was asked by Scaine to run a command and report back with the output: joe@joe-laptop:~$ tail -f /var/log/kern.log Dec 29 12:51:35 joe-laptop kernel: [103190.551437] sr 7:0:0:0: [sr1] Add. Sense: Illegal mode for this track Dec 29 12:51:35 joe-laptop kernel: [103190.551446] sr 7:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 Dec 29 12:51:35 joe-laptop kernel: [103190.551463] end_request: I/O error, dev sr1, sector 0 Dec 29 12:51:35 joe-laptop kernel: [103190.877542] sr 7:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Dec 29 12:51:35 joe-laptop kernel: [103190.877551] sr 7:0:0:0: [sr1] Sense Key : Illegal Request [current] Dec 29 12:51:35 joe-laptop kernel: [103190.877559] Info fld=0x0, ILI Dec 29 12:51:35 joe-laptop kernel: [103190.877562] sr 7:0:0:0: [sr1] Add. Sense: Illegal mode for this track Dec 29 12:51:35 joe-laptop kernel: [103190.877572] sr 7:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 Dec 29 12:51:35 joe-laptop kernel: [103190.877588] end_request: I/O error, dev sr1, sector 0 Dec 29 13:08:46 joe-laptop kernel: [104221.558911] usb 2-2.2: USB disconnect, address 16 Then when I plugged the drive back into the computer, I got: Dec 29 13:10:29 joe-laptop kernel: [104324.668320] usb 2-2.2: new high speed USB device using ehci_hcd and address 17 Dec 29 13:10:29 joe-laptop kernel: [104324.761702] usb 2-2.2: configuration #1 chosen from 1 choice Dec 29 13:10:29 joe-laptop kernel: [104324.762700] scsi8 : SCSI emulation for USB Mass Storage devices Dec 29 13:10:29 joe-laptop kernel: [104324.762935] usb-storage: device found at 17 Dec 29 13:10:29 joe-laptop kernel: [104324.762938] usb-storage: waiting for device to settle before scanning Dec 29 13:10:34 joe-laptop kernel: [104329.760521] usb-storage: device scan complete Dec 29 13:10:34 joe-laptop kernel: [104329.761344] scsi 8:0:0:0: CD-ROM TEAC CD-224E 1.7A PQ: 0 ANSI: 0 CCS Dec 29 13:10:34 joe-laptop kernel: [104329.767425] sr1: scsi3-mmc drive: 24x/24x cd/rw xa/form2 cdda tray Dec 29 13:10:34 joe-laptop kernel: [104329.767612] sr 8:0:0:0: Attached scsi CD-ROM sr1 Dec 29 13:10:34 joe-laptop kernel: [104329.767720] sr 8:0:0:0: Attached scsi generic sg2 type 5 Dec 29 13:10:34 joe-laptop kernel: [104330.141060] sr 8:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Dec 29 13:10:34 joe-laptop kernel: [104330.141069] sr 8:0:0:0: [sr1] Sense Key : Illegal Request [current] Dec 29 13:10:34 joe-laptop kernel: [104330.141077] Info fld=0x0, ILI Dec 29 13:10:34 joe-laptop kernel: [104330.141081] sr 8:0:0:0: [sr1] Add. Sense: Illegal mode for this track Dec 29 13:10:34 joe-laptop kernel: [104330.141090] sr 8:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 Dec 29 13:10:34 joe-laptop kernel: [104330.141106] end_request: I/O error, dev sr1, sector 0 Dec 29 13:10:34 joe-laptop kernel: [104330.141113] __ratelimit: 18 callbacks suppressed There was more output than this (the number of lines started growing after the drive was plugged back in, and kept growing), but this is the first few lines.

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  • Upgrading Agent Controllers

    - by Owen Allen
    There was an update for Oracle Solaris Agents not too long ago. Over on the Oracle Enterprise Manager blog, Steve Stelting has put together a detailed walkthrough for upgrading your environment. It covers downloading the Agent update, seeing what Agents need to be upgraded, and performing the upgrade itself Speaking of which, the Oracle Enterprise Manager blog often has in-depth posts about Ops Center, so it's well worth a look if you don't follow it.

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  • Suggestions for html tag info required for jQuery Plugin

    - by Toby Allen
    I have written a tiny bit of jQuery which simply selects all the Select form elements on the page and sets the selected property to the correct value. Previously I had to write code to generate the Select in php and specify the Selected attribute for the option that was selected or do loads of if statements in my php page or smarty template. Obviosly the information about what option is selected still needs to be specified somewhere in the page so the jQuery code can select it. I decided to create a new attribute on the Select item <Select name="MySelect" SelectedOption="2"> <-- Custom Attr SelectedOption <option value="1">My Option 1 </option> <option value="2">My Option 2 </option> <-- this option will be selected when jquery code runs <option value="3">My Option 3 </option> <option value="4">My Option 4 </option> </Select> Does anyone see a problem with using a custom attribute to do this, is there a more accepted way, or a better jquery way?

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  • Migrating an LDOM from a T4 to a T5

    - by Owen Allen
    I got a question about LDoms: "Is there any restriction against migrating LDoms between the T4 and T5 platforms?" The only restriction is that, at present, you can't do a live migration. However, with Ops Center 12.1.4, you can put T4 and T5s together in a Server Pool and either manually migrate the LDoms to a new host or configure them for automated cold-migration failover. Take a look at the Server Pool and Oracle VM Server for SPARC chapters for more information.

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  • Provisioning Videos

    - by Owen Allen
    There are a couple of new videos up on the Oracle Learning Youtube channel about Ops Center's provisioning capabilities. Simon Hayler does a walkthrough of a couple of different procedures. The first video shows you how to provision Oracle Solaris zones. It explains how to create an Oracle Solaris Zone profile, and then how to apply it (using a deployment plan) to a target system. The second video shows you how to provision an x86 server with Oracle Solaris. This uses a very similar process - you create a OS provisioning profile, then use a deployment plan to apply it to the target hardware. The documentation goes over OS provisioning and zone creation in the Feature Guide, if you're looking for additional information.

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  • Article about Sun ZFS Storage Appliances

    - by Owen Allen
    Sun ZFS Storage Appliances are versatile storage systems. Discovering and managing them in Ops Center, though, makes them even more versatile. If you discover a Sun ZFS Storage Appliance in Ops Center 12c, you can create iSCSI and Fibre Channel LUNS, and make the LUNs available to server pools and virtualization hosts as a storage library. Barbara Higgins has written an excellent article that walks you through the process of setting up a Sun ZFS Storage Appliance and discovering and managing it in Ops Center. If you're looking into ways to make a Sun ZFS Storage Appliance work for you, it's worth a look.

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  • Workflow: Operate Zones

    - by Owen Allen
    The Operate Zones workflow is another of the workflow documents that we introduced recently. It follows naturally after the Deploy Oracle Solaris 11 Zones workflow that I talked about last week, so I thought I'd talk about it next. This workflow is less linear than the zone deployment workflow. It's built around this image: The left side shows you the prerequisites for zone operation: you have to deploy libraries and deploy either Oracle Solaris 10 or 11 zones - whichever type you want to manage using this workflow. Once you have the zones deployed, you can begin to operate them. If you want to associate resources with the global zone, the workflow directs you to the Exploring Your Server Pools how-to, which talks about adding global zones to server pools and associating libraries and network resources with them. Otherwise, it directs you to a set of how-tos about zone management: Managing the Configuration of a Zone, which explains how to add storage, edit zone attributes, and connect zones to networks; Lifecycle Management of Zones, which explains how to halt, shut down, boot, reboot, or delete a zone; and Migrating Zones, which explains how to move a zone to a new global zone in the same server pool. Finally, it directs you to the Update Oracle Solaris workflow when you want to update your zones, and to the Monitor and Manage Incidents workflow to learn more about monitoring your assets.

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  • A quick look at: sys.dm_os_buffer_descriptors

    - by Jonathan Allen
    SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id WHEN 32767 THEN 'ResourceDb' ELSE DB_NAME(database_id) END AS Database_name FROM sys.dm_os_buffer_descriptors GROUP BY DB_NAME(database_id) , database_id ORDER BY cached_pages_count DESC; This gives you results which are quite useful, but if you add a new column with the code: …to convert the pages value to show a MB value then they become more relevant and meaningful. To see how your server reacts to queries, start up SSMS and connect to a test server and database – mine is called AdventureWorks2008. Make sure you start from a know position by running: -- Only run this on a test server otherwise your production server's-- performance may drop off a cliff and your phone will start ringing. DBCC DROPCLEANBUFFERS GO Now we can run a query that would normally turn a DBA’s hair white: USE [AdventureWorks2008] go SELECT * FROM [Sales].[SalesOrderDetail] AS sod INNER JOIN [Sales].[SalesOrderHeader] AS soh ON [sod].[SalesOrderID] = [soh].[SalesOrderID] …and then check our cache situation: A nice low figure – not! Almost 2000 pages of data in cache equating to approximately 15MB. Luckily these tables are quite narrow; if this had been on a table with more columns then this could be even more dramatic. So, let’s make our query more efficient. After resetting the cache with the DROPCLEANBUFFERS and FREEPROCCACHE code above, we’ll only select the columns we want and implement a WHERE predicate to limit the rows to a specific customer. SELECT [sod].[OrderQty] , [sod].[ProductID] , [soh].[OrderDate] , [soh].[CustomerID] FROM [Sales].[SalesOrderDetail] AS sod INNER JOIN [Sales].[SalesOrderHeader] AS soh ON [sod].[SalesOrderID] = [soh].[SalesOrderID] WHERE [soh].[CustomerID] = 29722 …and check our effect cache: Now that is more sympathetic to our server and the other systems sharing its resources. I can hear you asking: “What has this got to do with logging, Jonathan?” Well, a smart DBA will keep an eye on this metric on their servers so they know how their hardware is coping and be ready to investigate anomalies so that no ‘disruptive’ code starts to unsettle things. Capturing this information over a period of time can lead you to build a picture of how a database relies on the cache and how it interacts with other databases. This might allow you to decide on appropriate schedules for over night jobs or otherwise balance the work of your server. You could schedule this job to run with a SQL Agent job and store the data in your DBA’s database by creating a table with: IF OBJECT_ID('CachedPages') IS NOT NULL DROP TABLE CachedPages CREATE TABLE CachedPages ( cached_pages_count INT , MB INT , Database_Name VARCHAR(256) , CollectedOn DATETIME DEFAULT GETDATE() ) …and then filling it with: INSERT INTO [dbo].[CachedPages] ( [cached_pages_count] , [MB] , [Database_Name] ) SELECT COUNT(*) AS cached_pages_count , ( COUNT(*) * 8.0 ) / 1024 AS MB , CASE database_id WHEN 32767 THEN 'ResourceDb' ELSE DB_NAME(database_id) END AS Database_name FROM sys.dm_os_buffer_descriptors GROUP BY database_id After this has been left logging your system metrics for a while you can easily see how your databases use the cache over time and may see some spikes that warrant your attention. This sort of logging can be applied to all sorts of server statistics so that you can gather information that will give you baseline data on how your servers are performing. This means that when you get a problem you can see what statistics are out of their normal range and target you efforts to resolve the issue more rapidly.

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  • How To: Use Monitoring Rules and Policies

    - by Owen Allen
    One of Ops Center's most useful features is its asset monitoring capability. When you discover an asset - an operating system, say, or a server - a default monitoring policy is applied to it, based on the asset type. This policy contains rules that specify what properties are monitored and what thresholds are considered significant. Ops Center will send a notification if a monitored asset passes one of the specified thresholds. But sometimes you want different assets to be monitored in different ways. For example, you might have a group of mission-critical systems, for which you want to be notified immediately if their file system usage rises above a specific threshold. You can do so by creating a new monitoring policy and applying it to the group. You can also apply monitoring policies to individual assets, and edit them to meet the requirements of your environment. The Tuning Monitoring Rules and Policies How-To walks you through all of these procedures.

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  • Agent versus Agentless management

    - by Owen Allen
    I got a couple of questions about Agentless asset management: "What does agentless management do for an asset?" Agentless management is one of the two ways that you can manage an operating system. Rather than installing an Agent Controller on the OS, agentless management uses SSH to regularly check the system and gather monitoring data. Many of the actions that would be available on an agent-managed system are available on an agentless system, but actions such as running reports or updating an Oracle Solaris 10 or Linux OS are not available. A table showing the capabilities of agentless management is here. "What permissions does agentless management require?" Agentless management still requires root credentials. If you can't log into the system as root, you can provide one set of credentials for the login, and then a set of root credentials to switch to.

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  • Ops Center zip documentation

    - by Owen Allen
    If you're operating in a dark site, or are otherwise without easy access to the internet, it can be tricky to get access to the docs. The readme comes along with the product, but that's not exactly the same as the whole doc library. Well, we've put a zip file with the whole doc library contents up on the main doc page. So, if you are in a site without internet access, you can get the zip, extract it, and have a portable version of the site, including the pdf and html versions of all of the docs.

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  • OS Analytics Post and Discussion

    - by Owen Allen
    Eran Steiner has written an interesting piece over on the Enterprise Manager blog about the OS Analytics feature of Ops Center. OS Analytics gives you a huge amount of information about the characteristics of managed operating systems and lets you track changes to these characteristics over time. Take a look; it's a useful feature. The OS Analytics feature is also the subject of the community call this week (Eran is leading that one too). It's at 11 am EST. To join the conference: Go to https://oracleconferencing.webex.com/oracleconferencing/j.php?ED=209833067&UID=1512092402&PW=NY2JhMmFjMmFh&RT=MiMxMQ%3D%3D If requested, enter your name and email address. If a password is required, enter the meeting password: oracle123 Click Join. To dial into the conference, dial 1-866-682-4770 (US/Canada) or go here for the numbers in other countries. The conference code is 7629343# and the security code is 7777#.

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