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  • Ceská obchodní banka, a.s. Upgrades to Oracle Database 11g On Time, On Budget and without Disrupting Business Operations

    - by jgelhaus
    You want the new features of the latest release, but upgrading a database is one of those things DBAs can "lose sleep" over.  Ceská obchodní banka, a.s."CSOB" needed to upgrade its production systems in the Czech Republic and Slovakia that supported 90 key applications for its retail, corporate, internet, and ATM services from Oracle Database 9i to Oracle Database 11g with simultaneous migration from Alpha processors/OpenVMS-based hardware to a Power7, AIX system. Oracle Consulting helped to complete the upgrade within schedule and budget, while meeting tight restrictions on downtime. Knowledge transfer by Oracle Consulting to the bank’s IT team has improved self-sufficiency in support and maintenance while the technical and advisory services of Oracle Consulting Expert Services continue to optimize performance and availability while lowering cost of ownership. Read how CSOB maximized the value of its investment in Oracle Database technology with an upgrade to Oracle Database 11g.

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  • Interesting sessions/tips from RMOUG

    - by jean-pierre.dijcks
    One of the sessions I was at at last week's RMOUG was a session on Temp Tablespace Groups. I had a look because I had no experience with this and it seemed to help with parallel processing and the allocation/usage of temp. You can read the excellent write-up at Kellyn Pedersen's blog - who did the session and all the work - here. So for all of those who may be seeing lot's of waits like enq: TS - Contention when you are doing hash joins and sorts, do have a look at the above blog post. I also had the chance to listen in at Stewart Bryson's session on Restartability (he had 3 R-s) where he gave very useful tips about how to deal with your data warehouse loads. Questions like archive log mode - should I or should I not were well covered. Flashback archives, also nice to hear about. Very nice talk, very interesting. Unfortunately he hasn't blogged about it yes, so no pointers to that one. Got to see a couple of other interesting sessions, and as conferences go got to meet some interesting Oracle folks from the region. As usual RMOUG was useful and fun. Off to the drawing boards to design next year's session!

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  • Review the New Migration Guide to SQL Server 2012 Always On

    - by KKline
    I had the pleasure of meeting Mr. Cephas Lin, of Microsoft, last year at the SQL Saturday in Indianapolis and then later at the PASS Summit in the fall. Cephas has been writing content for SQL Server 2012 Always On. Cephas has recently published his first whitepaper, a migration guide to SQL Server AlwaysOn. Read it and then pass along any feedback: HERE Enjoy, -Kev - Follow me on Twitter !...(read more)

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  • DBMS agnostic - What to name the COUNT column from a SQL Query

    - by cyberkiwi
    I have trouble naming the COUNT() column from SQL queries and will swap between various variants _Count [Count] (sql, or "count" or backticks for MySQL etc) C Cnt CountSomething (where "something" is the field being counted, or "CountAll") NoOfRows RowCount etc Has anyone come up with any name that you are happy with and always use without hesitation? This is bothering me because after joining SO just recently, my answers have shown this tendency of flip-flopping with no consistency. I need to get this sorted. Please help. (While we're at it, what do you use for SUM etc?) Note: Before you close this question, consider that this one was not: What's the best name for a non-mutating “add” method on an immutable collection?

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  • IBM System i Permissions on Database views

    - by Big EMPin
    We have an IBM System i running IBM i OS v6r1. On this system, I have created some database views. What I want to do is give a particular user group access to ONLY these views and nothing else within the library in which the views reside. Is this possible? I had a user group that had read only permissions to all tables and views in the library in which my views are located, and access works when the user is under this usergroup. I tried copying the user group, and then assigning permissions to only include the views I have created, and access is denied. Does a user or usergroup also have to have permissions on the table from which the view originates in order to access the view?

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  • drda protocol specs

    - by Alon Rew
    When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC? I found 2 different answers when I googled it. If you look at The Open Group web site (https://collaboration.opengroup.org/dbiop/) it can be understood that the answer is NO. However, if you look at the IBM website (http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=%2Fcom.ibm.ims11.doc.apr%2Fims_ddm_excsat.htm) you can understand the answer is YES. So which is it?

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  • TechEd 2010 Followup

    - by AllenMWhite
    Last week I presented a couple of sessions at Tech Ed NA in New Orleans. It was a great experience, even though my demos didn't always work out as planned. Here are the sessions I presented: DAT01-INT Administrative Demo-Fest for SQL Server 2008 SQL Server 2008 provides a wealth of features aimed at the DBA. In this demofest of features we'll see ways to make administering SQL Server easier and faster such as Centralized Data Management, Performance Data Warehouse, Resource Governor, Backup Compression...(read more)

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  • Is there a network "tee"-alike with one leg returning to /dev/null ?

    - by Steff Davies
    I've just built a new PostgreSQL server for my employers, which is happily replicating using WALs. I'm now left with the problem of verifying its performance. One nice way which came up in conversation is to break replication with the slave caught up and then direct all production traffic to both servers, discarding the responses from the new server and returning those from the current one to the clients. Once we're sure performance is OK, we re-sync the slave and can fail over with confidence. Bliss. This would require a TCP proxy capable of opening two outgoing connections for each incoming one, and discarding the data returned from one of them, which is a tricky thing to google for, it seems. Do the assembled brains know of such a thing, before I dive into libevent and write one?

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  • SQL Rally Presentations

    - by AllenMWhite
    As I drove to Dallas for this year's SQL Rally conference (yes, I like to drive) I got a call asking if I could step in for another presenter who had to cancel at the last minute. Life happens, and it's best to be flexible, and I said sure, I can do that. Which presentation would you like me to do? (I'd submitted a few presentations, so it wasn't a problem.) So yesterday I presented "Gathering Performance Metrics With PowerShell" at 8:45AM, and my newest presentation, "Manage SQL Server 2012 on Windows...(read more)

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  • When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC?

    - by Alon Rew
    When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC? I found 2 different answers when I googled it. If you look at The Open Group web site (https://collaboration.opengroup.org/dbiop/) it can be understood that the answer is NO. However, if you look at the IBM website (http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=%2Fcom.ibm.ims11.doc.apr%2Fims_ddm_excsat.htm) you can understand the answer is YES. So which is it?

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  • Benchmarks relevant for a Visual Studio .Net development workstation

    - by user30715
    I am developing a system with Windows 7-64, Visual Studio and Sharepoint on a virtual workstation on some kind of VMWare server. The system is painfully slow, with VS lagging behind when entering code, Intellisense lagging, opening and saving files takes ages when compared to a normal budget laptop. As far as I can see the virtual machine has OK specs and does not seem to be swapping etc., and the IT dept also says that they can't see anything wrong when they're monitoring the system. As long as the problem is not well-documented, the IT dept and management does not want to throw money (=upgraded laptops) at us, so I need to show some sort of benchmark. It has been many years since I did any system benchmarking, and I don't know the current benchmark software, so my question is which benchmark will be most relevant for Visual Studio performance? Not just for compiling fast, but also to reflect the "responsiveness" of the system. Cheers, user30715

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  • Exceptional PowerShell DBA Pt 3 - Collation and Fragmentation

    In this final look into his everyday essentials, Laerte Junior provides some useful scripts for the DBA that use an alternative way of error-logging. He shows how to use a PowerShell script to check and, if necessary, to defragment your indexes, write data to a SQL Server table, and change the collation for a table. Being an exceptional DBA just got a little easier.

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  • SOA, Java EE and data organization

    - by jolasveinn
    At the company I work for, we're currently splitting up our monolith solution into a number of small services (SOA). Many of the services are small, so we'd like to deploy a number of these services on the same application server, JBoss 7.1 in this case. As per the SOA philosophy, the independence of each service and the teams working on them is very important. What would be the best way to organize the data? Use one schema per service Would you use one datasource per schema in the application server? Or use one datasource, prefixing all DB object names with the schema name in some transparent manner? Use a shared schema, but evading any naming collisions by requiring each service to use a distinct prefix for all DB objects Other options? Am I maybe thinking this completely wrong here? :)

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  • My Last "Catch-Up" Post for 2010 Content

    - by KKline
    I did a lot of writing in 2010. Unfortunately, I didn't do a good job of keeping all of that writing equally distributed throughout all of the channels where I'm active. So here are a few more posts from my blog, put on-line during the months of November and December 2010, that I didn't get posted here on SQLBlog.com: 1. It's Time to Upgrade! So many of my customers and many of you, dear readers, are still on SQL Server 2005. Join Kevin Kline , SQL Server MVP and SQL Server Technology Strategist...(read more)

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  • Mysql replication, one database server process

    - by Jonny
    On my development box, I want to experiment with a replication setup. But I don't want to create several mysqld processes (is it even possible?). I figured I have the main database in the process - have this as the master, then in the same process create the slave databases, and have the master data replicated into the databases that exist in the same db server. Is this possible? Is there an easier way of achieving this without trying to set up replication? Maybe to put it more simply: I want my Mysql server to be both master and slave(s) at the same time.

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  • Is there anyway way to speed up Exchange 2007's Load Generator tool?

    - by JohnM
    I'm running Load Generator to test our new deployment before going live and the initialization process has been running for two days and is only at 25% for ~58000 user test. Does anyone know of a way to speed up this process? Surely it shouldn't take this long. Currently, I've got it running with one master and two remote servers and they aren't peaking out on CPU or Network utilization. Any help you could provide would be greatly appreciated.

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  • Grouping a comma separated value on common data [closed]

    - by Ankit
    I have a table with col1 id int, col2 as varchar (comma separated values) and column 3 for assigning group to them. Table looks like col1 col2 group .............................. 1 2,3,4 2 5,6 3 1,2,5 4 7,8 5 11,3 6 22,8 This is only the sample of real data, now I have to assign a group no to them in such a way that output looks like col1 col2 group .............................. 1 2,3,4 1 2 5,6 1 3 1,2,5 1 4 7,8 2 5 11,3 1 6 22,8 2 The logic for assigning group no is that every similar comma separated value of string in col2 have to be same group no as every where in col2 where '2' is there it has to be same group no but the complication is that 2,3,4 are together so they all three int value if found in any where in col2 will be assigned same group. The major part is 2,3,4 and 1,2,5 both in col2 have 2 so all int 1,2,3,4,5 have to assign same group no. Tried store procedure with match against on col2 but not getting desired result Most imp (I can't use normalization, because I can't afford to make new table from my original table which have millions of records), even normalization is not helpful in my context. This question is also on stackoverflow with bounty on this link Achieved so far:- I have set the group column auto increment and then wrote this procedure:- BEGIN declare cil1_new,col2_new,group_new int; declare done tinyint default 0; declare group_new varchar(100); declare cur1 cursor for select col1,col2,`group` from company ; DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1; open cur1; REPEAT fetch cur1 into col1_new,col2_new,group_new; update company set group=group_new where match(col2) against(concat("'",col2_new,"'")); until done end repeat; close cur1; select * from company; END This procedure is working, no syntax mistake but the problem is that I am not achieving the desired result exactly.

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  • Using Substring() in XML FLOWR Queries

    - by Jonathan Kehayias
    Tonight I was monitoring the #sqlhelp hashtag on Twitter for a response to a question I asked when Randy Knight ( Twitter ) asked a question about using SUBSTRING in FLOWR statements with XML. #sqlhelp Is there a way to do a SQL Type "LIKE" or "SUBSTRING" in the where clause of FLWOR statement? Need to evaluate just first n chars. By the time I posted a response, Randy had figured out how to use the contains() function to solve his problem, but I am going to blog this because...(read more)

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  • The most dangerous SQL Script in the world!

    - by DrJohn
    In my last blog entry, I outlined how to automate SQL Server database builds from concatenated SQL Scripts. However, I did not mention how I ensure the database is clean before I rebuild it. Clearly a simple DROP/CREATE DATABASE command would suffice; but you may not have permission to execute such commands, especially in a corporate environment controlled by a centralised DBA team. However, you should at least have database owner permissions on the development database so you can actually do your job! Then you can employ my universal "drop all" script which will clear down your database before you run your SQL Scripts to rebuild all the database objects. Why start with a clean database? During the development process, it is all too easy to leave old objects hanging around in the database which can have unforeseen consequences. For example, when you rename a table you may forget to delete the old table and change all the related views to use the new table. Clearly this will mean an end-user querying the views will get the wrong data and your reputation will take a nose dive as a result! Starting with a clean, empty database and then building all your database objects using SQL Scripts using the technique outlined in my previous blog means you know exactly what you have in your database. The database can then be repopulated using SSIS and bingo; you have a data mart "to go". My universal "drop all" SQL Script To ensure you start with a clean database run my universal "drop all" script which you can download from here: 100_drop_all.zip By using the database catalog views, the script finds and drops all of the following database objects: Foreign key relationships Stored procedures Triggers Database triggers Views Tables Functions Partition schemes Partition functions XML Schema Collections Schemas Types Service broker services Service broker queues Service broker contracts Service broker message types SQLCLR assemblies There are two optional sections to the script: drop users and drop roles. You may use these at your peril, particularly as you may well remove your own permissions! Note that the script has a verbose mode which displays the SQL commands it is executing. This can be switched on by setting @debug=1. Running this script against one of the system databases is certainly not recommended! So I advise you to keep a USE database statement at the top of the file. Good luck and be careful!!

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  • How to perform diagnostics (stress test) on HP Smartarray Controller

    - by pepoluan
    At my office, we have a server that we suspect its RAID controller (HP Smartarray) is failing. A cold boot, however, does not indicate anything. Can anyone recommend me a method to stress-test the controller? Symptoms that makes me suspect a failing controller: Disk access getting slower, queue getting longer Running dmesg on the XenServer console I see many messages similar to this one: end_request: I/O error, dev tda, sector 253655584 (the sector number is never the same) When we move the VM to another physical host, we no longer see the above message Running idle (without any running VM), the dmesg no longer emit the above message A search on Google indicated that the above message is most commonly associated with a failing SmartArray controller. How can I be sure that the SmartArray controller is failing?

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