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  • How to skip an empty LIKE operator in a multiple LIKE query?

    - by alex
    I notice my query doesn't behave correctly if one of the like variables is empty: SELECT name FROM employee WHERE name LIKE '%a%' AND color LIKE '%A%' AND city LIKE '%b%' AND country LIKE '%B%' AND sport LIKE '%c%' AND hobby LIKE '%C%' Now when a and A are not empty it works but when a, A and c are not empty the c part is not excuted so it seems? How can I fix this?

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  • MYSQL Insert: How to save Query in the database only one time - duplicate key doesn't work!

    - by elmaso
    hello, I want to save a query only one time in the database, this is my code: $querystat = mysql_real_escape_string($_GET['q']); $datetime = time(); if( ($querystat != $_SESSION['prev_search']) OR ( ($datetime - $_SESSION['datetime']) > 60) ) { $insertquery = "INSERT INTO `query` ( `searchquery` , `datetime`) VALUES ( '$querystat' , '$datetime') ON DUPLICATE KEY UPDATE searchquery='$querystat';"; mysql_query($insertquery, $db); } maybe something with == 0 ?

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  • Can I get the full query that a PreparedStatement is about to execute?

    - by ufk
    I'm working with PreparedStatement with MySQL server. example: String myQuery = "select id from user where name = ?"; PreparedStatement stmt = sqlConnection.prepareStatement(myQuery); stmt.setString(1, "test"); stmt.executeQUery(); ResultSet rs = stmt.getResultSet(); How can I receive the full SQL query that is about to be executed on the MySQL server? thanks!

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  • How to check results of LINQ to SQL query?

    - by rem
    In a WPF app I'd like to check if a return of a LINQ to SQL query contains some records, but my approach doesn't work: TdbDataContext context = new TdbDataContext(); var sh = from p in context.Items where p.Selected == true select p; if (sh == null) { MessageBox.Show("There are no Selected Items"); } Where am I wrong?

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  • How to query by recent date and value in SQL?

    - by wsb3383
    I have a table with three columns: patient_id, obs_date, and weight_val. patient_id stores patient identification #, weight_val stores a weight value, and obs_date stores the date when the weight reading was taken. So, a patient can have many different weight readings at different dates. How do you write a query for: select all patients whose last weight reading is 120?

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  • Is existed web markup languages with possibility insert sql query?

    - by MercurieVV
    Actually what I want - simple DB with simple User Interface. Like MS Access, but for web and it can be without Dragn n Drop, but described with markup language. For example if I want to create list report, then i need to write something like: <table query="SELECT * from mytable"></table> It needed for simple data applications. In that kind application no programming logic required. Just working with DB. Changing DB data and showing it.

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  • MySQL VIEW vs. embedded query, which one is faster?

    - by Vincenzo
    I'm going to optimize a MySQL embedded query with a view, but I'm not sure whether it will give an effect: SELECT id FROM (SELECT * FROM t); I want to convert it to: CREATE VIEW v AS SELECT * FROM t; SELECT id FROM v; I've heard about "indexed views" in SQL Server, but I'm not sure about MySQL. Any help would be appreciated. Thanks!

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  • methods of joining 2 tables without using JOIN or SELECT more than one distinct table in the query

    - by GB_J
    Is there a way of joining results from 2 tables without using JOIN or SELECT from more than one table? The reason being the database im working with requires queries that only contain SELECT, FROM, and WHERE clauses containing only one distinct table. I do, however, need information from other tables for the project i'm working on. More info: the querier returns the query results in a .csv format, is there something we can manipulate there?

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  • LinqPad with Azure Table Storage

    - by Sarang
    LinqPad as we all know has been a wonderful tool for running ad-hoc queries. With Windows Azure Table storage in picture LinqPad was no longer in picture and we shifted focus to Cloud Storage Studio only to realize the limited and strange querying capabilities of CSS. With some tweaking to Linqpad we can get the comfortable old shoe of ad-hoc queries with LinqPad in the Windows Azure Table storage. Steps: 1. Start LinqPad 2. Right Click in the query window and select “Query Properties” 3. In The Additional References add reference to Microsoft.WindowsAzure.StorageClient, System.Data.Services.Client.dll and the assembly containing the implementation of the DataServiceContext class tied to the Windows Azure table storage. 4. In the additional namespace imports import the same three namespaces mentioned above. 5. Then we need to provide following details. a. Table storage account name and shared key. b. DataServiceContext implementing class in your code. c. A LINQ query. e.x.         var storageAccountName = "myStorageAccount";  // Enter valid storage account name         var storageSharedKey = "mysharedKey"; // Enter valid storage account shared key         var uri = new System.Uri("http://table.core.windows.net/");         var storageAccountInfo = new CloudStorageAccount(new StorageCredentialsAccountKey(storageAccountName, storageSharedKey), false);         var serviceContext = new TweetPollDataServiceContext(storageAccountInfo); // Specify the DataServiceContext implementation         // The query         var query = from row in serviceContext.Table                     select row;         query.Dump(); Thanks LinqPad! Technorati Tags: LinqPad,Azure Table Storage,Linq

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  • Implementing a generic repository for WCF data services

    - by cibrax
    The repository implementation I am going to discuss here is not exactly what someone would call repository in terms of DDD, but it is an abstraction layer that becomes handy at the moment of unit testing the code around this repository. In other words, you can easily create a mock to replace the real repository implementation. The WCF Data Services update for .NET 3.5 introduced a nice feature to support two way data bindings, which is very helpful for developing WPF or Silverlight based application but also for implementing the repository I am going to talk about. As part of this feature, the WCF Data Services Client library introduced a new collection DataServiceCollection<T> that implements INotifyPropertyChanged to notify the data context (DataServiceContext) about any change in the association links. This means that it is not longer necessary to manually set or remove the links in the data context when an item is added or removed from a collection. Before having this new collection, you basically used the following code to add a new item to a collection. Order order = new Order {   Name = "Foo" }; OrderItem item = new OrderItem {   Name = "bar",   UnitPrice = 10,   Qty = 1 }; var context = new OrderContext(); context.AddToOrders(order); context.AddToOrderItems(item); context.SetLink(item, "Order", order); context.SaveChanges(); Now, thanks to this new collection, everything is much simpler and similar to what you have in other ORMs like Entity Framework or L2S. Order order = new Order {   Name = "Foo" }; OrderItem item = new OrderItem {   Name = "bar",   UnitPrice = 10,   Qty = 1 }; order.Items.Add(item); var context = new OrderContext(); context.AddToOrders(order); context.SaveChanges(); In order to use this new feature, you first need to enable V2 in the data service, and then use some specific arguments in the datasvcutil tool (You can find more information about this new feature and how to use it in this post). DataSvcUtil /uri:"http://localhost:3655/MyDataService.svc/" /out:Reference.cs /dataservicecollection /version:2.0 Once you use those two arguments, the generated proxy classes will use DataServiceCollection<T> rather than a simple ObjectCollection<T>, which was the default collection in V1. There are some aspects that you need to know to use this feature correctly. 1. All the entities retrieved directly from the data context with a query track the changes and report those to the data context automatically. 2. A entity created with “new” does not track any change in the properties or associations. In order to enable change tracking in this entity, you need to do the following trick. public Order CreateOrder() {   var collection = new DataServiceCollection<Order>(this.context);   var order = new Order();   collection.Add(order);   return order; } You basically need to create a collection, and add the entity to that collection with the “Add” method to enable change tracking on that entity. 3. If you need to attach an existing entity (For example, if you created the entity with the “new” operator rather than retrieving it from the data context with a query) to a data context for tracking changes, you can use the “Load” method in the DataServiceCollection. var order = new Order {   Id = 1 }; var collection = new DataServiceCollection<Order>(this.context); collection.Load(order); In this case, the order with Id = 1 must exist on the data source exposed by the Data service. Otherwise, you will get an error because the entity did not exist. These cool extensions methods discussed by Stuart Leeks in this post to replace all the magic strings in the “Expand” operation with Expression Trees represent another feature I am going to use to implement this generic repository. Thanks to these extension methods, you could replace the following query with magic strings by a piece of code that only uses expressions. Magic strings, var customers = dataContext.Customers .Expand("Orders")         .Expand("Orders/Items") Expressions, var customers = dataContext.Customers .Expand(c => c.Orders.SubExpand(o => o.Items)) That query basically returns all the customers with their orders and order items. Ok, now that we have the automatic change tracking support and the expression support for explicitly loading entity associations, we are ready to create the repository. The interface for this repository looks like this,public interface IRepository { T Create<T>() where T : new(); void Update<T>(T entity); void Delete<T>(T entity); IQueryable<T> RetrieveAll<T>(params Expression<Func<T, object>>[] eagerProperties); IQueryable<T> Retrieve<T>(Expression<Func<T, bool>> predicate, params Expression<Func<T, object>>[] eagerProperties); void Attach<T>(T entity); void SaveChanges(); } The Retrieve and RetrieveAll methods are used to execute queries against the data service context. While both methods receive an array of expressions to load associations explicitly, only the Retrieve method receives a predicate representing the “where” clause. The following code represents the final implementation of this repository.public class DataServiceRepository: IRepository { ResourceRepositoryContext context; public DataServiceRepository() : this (new DataServiceContext()) { } public DataServiceRepository(DataServiceContext context) { this.context = context; } private static string ResolveEntitySet(Type type) { var entitySetAttribute = (EntitySetAttribute)type.GetCustomAttributes(typeof(EntitySetAttribute), true).FirstOrDefault(); if (entitySetAttribute != null) return entitySetAttribute.EntitySet; return null; } public T Create<T>() where T : new() { var collection = new DataServiceCollection<T>(this.context); var entity = new T(); collection.Add(entity); return entity; } public void Update<T>(T entity) { this.context.UpdateObject(entity); } public void Delete<T>(T entity) { this.context.DeleteObject(entity); } public void Attach<T>(T entity) { var collection = new DataServiceCollection<T>(this.context); collection.Load(entity); } public IQueryable<T> Retrieve<T>(Expression<Func<T, bool>> predicate, params Expression<Func<T, object>>[] eagerProperties) { var entitySet = ResolveEntitySet(typeof(T)); var query = context.CreateQuery<T>(entitySet); foreach (var e in eagerProperties) { query = query.Expand(e); } return query.Where(predicate); } public IQueryable<T> RetrieveAll<T>(params Expression<Func<T, object>>[] eagerProperties) { var entitySet = ResolveEntitySet(typeof(T)); var query = context.CreateQuery<T>(entitySet); foreach (var e in eagerProperties) { query = query.Expand(e); } return query; } public void SaveChanges() { this.context.SaveChanges(SaveChangesOptions.Batch); } } For instance, you can use the following code to retrieve customers with First name equal to “John”, and all their orders in a single call. repository.Retrieve<Customer>(    c => c.FirstName == “John”, //Where    c => c.Orders.SubExpand(o => o.Items)); In case, you want to have some pre-defined queries that you are going to use across several places, you can put them in an specific class. public static class CustomerQueries {   public static Expression<Func<Customer, bool>> LastNameEqualsTo(string lastName)   {     return c => c.LastName == lastName;   } } And then, use it with the repository. repository.Retrieve<Customer>(    CustomerQueries.LastNameEqualsTo("foo"),    c => c.Orders.SubExpand(o => o.Items));

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  • E-Business Suite Technology Sessions at OAUG Collaborate 12

    - by Max Arderius
    Members of our E-Business Suite Applications Technology Group will be at the OAUG Collaborate 12 conference at the Mandalay Bay Convention Center in Las Vegas, Nevada on April 22 to 26, 2012.  Please drop by any of our sessions to hear the latest news and meet up with us. Speaker Sessions Session 9675Planning Your Oracle E-Business Suite Upgrade from Release 11i to 12.1 and BeyondAnne Carlson, Senior Director, Applications Technology Group, OracleSunday, April 22, 2:00 pm - 3:00 pmLocation: Jasmine B Attend this session to hear the latest Oracle E-Business Suite Release 12.1 upgrade planning tips gleaned from customers who have already performed the upgrade. Youll get specific, cross-product advice on how to decide your project's scope, understand the factors that affect your project's duration, develop a robust testing strategy, leverage Oracle Support resources, and more. In a nutshell, this session tells you things you need to know before embarking upon your Release 12.1 upgrade project. Session 9401Minimizing Oracle E-Business Suite Maintenance DowntimesElke Phelps, Principal Product Manager, Applications Technology Group, OracleKevin Hudson, Sr. Director, Applications Technology Group, OracleSunday, April 22, 2:10 pm - 3:10 pmLocation: South Seas EThis session starts with an architecture review of Oracle E-Business Suite fundamentals and then moves to a practical view of the different tools and approaches for downtimes. Topics include patching shortcuts, merging patches, distributing worker processes across multiple servers, running ADPatch in no-interactive mode, staged APPL_TOPs, shared file systems, deferring system-wide database tasks, avoiding resource bottlenecks etc... This session also describes the online patching capabilities coming in Release 12.2. Session 9368Oracle E-Business Suite Technology: Latest Features and RoadmapLisa Parekh, Vice President, Applications Technology Group, Oracle Sunday, April 22, 4:30 pm - 5:30 pmLocation: South Seas EThis session provides an overview of Oracle E-Business Suite technology strategy, the capabilities and associated business benefits of recent releases, as well as a review of the product roadmap. As a cornerstone session for Oracle E-Business Suite technology, come hear about the latest usability enhancements, systems administration and configuration management tools, security-related updates, and tools and options for extending, customizing, and integrating the Oracle E-Business Suite with other applications. Session 10709Oracle E-Business Suite Applications Strategy and General Manager UpdateCliff Godwin, Sr. VP, Application Development, OracleMonday, April 23, 2:30 pm - 3:30 pmLocation: Mandalay Bay DIn this session, hear from Oracle E-Business Suite General Manager Cliff Godwin as he delivers an update on the Oracle E-Business Suite product line. The session covers the value delivered by the current release of Oracle E-Business Suite applications, the momentum, and how Oracle E-Business Suite applications integrate into Oracle’s overall applications strategy. You will come away with an understanding of the value Oracle E-Business Suite applications deliver now and in the future. Session 9398How to Reduce TCO Using Oracle Application Management Suite for Oracle E-Business SuiteAngelo Rosado, Principal Product Manager, Applications Technology Group, OracleKenneth Baxter, Principal Product Strategy Manager, Management Pack Fusion Middleware Management, OracleTuesday, April 24, 8:00 am - 9:00 amLocation: Breakers GThis session covers the methods and tools you can use to gain insights into your end users, troubleshoot performance problems, define service-level objectives, and proactively monitor your end-to-end Oracle E-Business Suite environment to meet your availability and performance targets. Come hear how you can manage, diagnose, and monitor the Oracle E-Business Suite environment from a single console by using Oracle Enterprise Manager together with the Oracle Application Management Suite for Oracle E-Business Suite. Session 9370 Coexistence of Oracle E-Business Suite and Oracle Fusion Applications: Platform Perspective Nadia Bendjedou, Senior Director, Product Strategy, Oracle Tuesday, April 24, 2:00 pm - 3:00 pm Location: South Seas E Join us at this session if you are wondering which tools to integrate your data, your processes and your User Interface. Or what tools to customize and extend your screens and reports (OAF, Forms, ADF, Oracle Reports, BI etc....), what tools to secure, protect and manage your Oracle E-Business Suite etc... Or simply if you are looking for a technical roadmap for your Oracle E-Business Suite infrastructure to CO-EXIST with the rest of your enterprise applications including Oracle Fusion Applications. Session 9375 Oracle E-Business Suite Directions: Deployment and System AdministrationMax Arderius, Manager, Applications Development Group, OracleTuesday, April 24, 4:30 pm - 5:30 pmLocation: Breakers GWhat's coming in the next major version of Oracle E-Business Suite 12? This session covers the latest technology stack, including the use of Oracle WebLogic Server and Oracle Database 11g Release 2. Topics include an architectural overview, installation and upgrade options, new configuration options, and new tools for hot-cloning and automated "lights out" cloning. Learn about how online patching will reduce your database patching downtimes to the time it takes to bounce your database server.Session 9369Oracle E-Business Suite Technology Certification Primer and RoadmapSteven Chan, Sr. Director, Applications Technology Group, Oracle Wednesday, April 25, 8:15 am - 9:15 amLocation: South Seas FThis Oracle Development session summarizes the latest certifications and roadmap for the Oracle E-Business Suite technology stack, including database releases/options, Java, Oracle Forms, Oracle Containers for J2EE, desktop OS, browsers, JRE releases, Office/OpenOffice, development and Web authoring tools, user authentication and management, BI, security options, clouds, Oracle VM etc.... It also covers the most-commonly-asked questions about technology stack component support dates and upgrade implications. Session 9407The Latest Oracle E-Business Suite Release User Interface and Usability EnhancementsGustavo Jimenez, Sr. Manager, Applications Technology Group, Oracle Wednesday, April 25, 1:00 pm - 2:00 pmLocation: South Seas GIn this session, developers will get a detailed look at new features designed to enhance usability, offer more capabilities for personalization and extensions, and support the development and use of dashboards and Web services. Topics include rich new UI capabilities such as new home page features, Navigator and Favorites pull-down menus, Oracle ADF task flows etc.... In addition, we will cover the personalization/extensibility enhancements, business layer extensions, Oracle ADF integration and much more. Session 9374Best Practices for Oracle E-Business Suite Performance Tuning and Upgrade OptimizationIsam Alyousfi, Senior Director, Applications Performance, OracleUdayan Parvate, Director, Release Engineering, Quality and Release Management, Oracle Thursday, April 26, 8:30 am - 9:30 amLocation: South Seas FThis presentation will offer tips and techniques on tuning all the layers of the Oracle E-Business Suite stack including the various tiers of the Oracle E-Business Suite environment. You will learn about tuning Oracle Forms, Concurrent Manager, Apache, and Oracle Discoverer. Track down memory leaks and other issues on the Java and Java Virtual Machine layers. The session also covers Oracle E-Business Suite product-level tuning, including Oracle Workflow, Oracle Order Management, Oracle Payroll, and other modules.Session 9412 Oracle E-Business Suite 12.1 Desktop Integration: Beyond Oracle Applications Desktop IntegratorGustavo Jimenez, Sr. Manager, Applications Technology Group, OracleThursday, April 26, 8:30 am - 9:30 amLocation: Breakers GThis session describes the new expanded functionality in Oracle Web Applications Desktop Integrator, Oracle Report Manager, and dedicated integrators. You have more options for desktop integration now, not fewer. Topics include an overview of prepackaged solutions for integrating Oracle E-Business Suite with desktop applications such as Microsoft Excel, Word, and Projects. The session also discusses how you can use the Desktop Integration Framework feature to create your own integrators quickly and easily.Session 9533 Upgrading your Customizations to Oracle E-Business Suite Release 12.1Sara Woodhull, Principal Product Manager, Applications Technology Group, Oracle Thursday, April 26, 11:00 am - 12:00 pmLocation: South Seas FHave you personalized Forms or OA Framework screens? Have you used mod_plsql or Applications Express to tailor your Release 11i functionality? Have you extended or customized your Release 11i environment using other tools? This session will help you understand customization scenarios, use cases, tools, and technologies for ensuring that your Oracle E-Business Suite Release 12.1 environment fits your users' needs closely and that any future customizations will be easy to upgrade. Special Interest Groups (SIG) Session 10535OAUG Database SIG- Part IMichael Brown, Colibri Limited Company Sunday, April 22, 3:20 pm - 4:20 pmLocation: South Seas FThis is the annual meeting of the Database SIG at Collaborate. The call for candidates for the chair will be closed at the meeting. Plans include a speaker from Oracle and a presentation on applications performance. The details of the meeting will be posted on http://www.dbsig.com. Guest Presentation: Oracle E-Business Suite Database PerformanceIsam Alyousfi, Senior Director, Applications Performance, Oracle Session 10720OAUG EBS Applications Technology SIG- Part ISrini Chaval, Cummins Monday, April 23, 2:30 pm - 3:30 pmLocation: South Seas F Guest Presentation:Oracle E-Business Suite Technology Certification RoadmapSteven Chan, Sr. Director, Applications Technology Group, Oracle Session 10510OAUG EBS Applications Technology SIG- Part IISrini Chaval, CumminsMonday, April 23, 3:45 pm - 4:45 pmLocation: South Seas F Guest Presentation:Oracle E-Business Suite 12.2 Online Patching Kevin Hudson, Sr. Director, Applications Technology Group, Oracle Session 10522 OAUG Upgrade SIG- Part IISandra Vucinic, VLAD Group, Inc. Wednesday, April 25, 3:00 pm - 4:00 pmLocation: South Seas FUpgrade SIG will host a business meeting followed by panel (Q&A) related to EBS Upgrade topics and Oracle presentation. Guest Presentation:Upgrading E-Business Suite Amrita Mehrok, Director, Financials Product Strategy, Oracle Nadia Bendjedou, Senior Director, Product Strategy, Oracle Session 10722OAUG Upgrade SIG- Part IISandra Vucinic, VLAD Group, Inc. Wednesday, April 25, 4:15 pm - 5:15 pmLocation: South Seas FUpgrade SIG will host a business meeting followed by panel (Q&A) related to EBS Upgrade topics and Oracle presentation. Guest Presentation:Tuning the Oracle E-Business Suite Upgrade Isam Alyousfi, Senior Director, Applications Performance, Oracle Panels Session 9360Oracle E-Business Suite Cloning PanelSandra Vucinic, VLAD Group, Inc. Guest Speaker: Max Arderius, Manager, Applications Technology Group, OracleWednesday, April 25, 9:30 am - 10:30 amLocation: South Seas FThis panel will discuss differences between available release 11i, R12 and R12.1 cloning methods. Advantages and disadvantages of each cloning method will be discussed in depth. This panel of experienced database administrators will lead a discussion focusing on the questions such as “which cloning method is best to use in your particular environment”. Attendees will gain practical knowledge, tips and tricks to assist with cloning of Oracle E-Business Suite release 11i, R12 and R12.1 environments. Session 10022Oracle Applications Tuning PanelMark Farnham, Rightsizing, Inc.Guest Speaker: Isam Alyousfi, Senior Director, Applications Performance, OracleThursday, April 26, 09:45 am - 10:45 amLocation: South Seas FThis applications performance panel session, sponsored by the OAUG Database SIG, provides a Q&A forum focused on helping you address your Oracle Applications (Oracle E-Business Suite and Oracle's PeopleSoft Enterprise and Siebel applications) performance- and scalability-related issues. The panel comprises several well-known Oracle Applications performance experts. Topic areas include Oracle Database; the network; and the applications tier, including patching and upgrade performance. For complete listing of all speaker sessions and other activities, please visit the OAUG Collaborate Web Site.

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  • Linqpad with Table Storage

    - by kaleidoscope
    LinqPad as we all know has been a wonderful tool for running ad-hoc queries. With Azure Table storage in picture LinqPad was no longer in picture and we shifted focus to Cloud Storage Studio only to realize the limited and strange querying capabilities of CSS. With some tweaking to Linqpad we can get the comfortable old shoe of ad-hoc queries with LinqPad in the Azure Table storage. Steps: 1. Start LinqPad 2. Right Click in the query window and select “Query Properties” 3. In The Additional References add reference to Microsoft.WindowsAzure.StorageClient, System.Data.Services.Client.dll and the assembly containing the implementation of the DataServiceContext class tied to the Azure table storage. 4. In the additional namespace imports import the same three namespaces mentioned above. 5. Then we need to provide following details. a. Table storage account name and shared key. b. DataServiceContext implementing class in your code. c. A LINQ query. e.x. var storageAccountName = "myStorageAccount";  // Enter valid storage account name var storageSharedKey = "mysharedKey"; // Enter valid storage account shared key var uri = new System.Uri("http://table.core.windows.net/"); var storageAccountInfo = new CloudStorageAccount(new StorageCredentialsAccountKey(storageAccountName, storageSharedKey), false); var serviceContext = new TweetPollDataServiceContext(storageAccountInfo); // Specify the DataServiceContext implementation // The query var query = from row in serviceContext.Table select row;         query.Dump(); Sarang, K

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  • OpenWorld 2012—Is Almost Here!

    - by Scott McNeil
    With OpenWorld fast approaching, I thought I would take this opportunity to look at some of the “must see” database manageability activities and sessions happening this year. Here's a quick run down: Oracle Database Manageability: Download all the details for sessions, hands-on-labs, and demos (PDF) Keynotes: Sunday, September 30 Hardware and Software, Engineered to Work Together: Why It’s A Different Approach Larry Ellison, CEO, Oracle Monday, October 1 Shift Complexity Hosted by Mark Hurd, President, Oracle Andrew Mendelsohn, Senior Vice President, Database Server Technologies, Oracle IOUG SIG Sunday: Database Performance Tuning: Getting the Best out of Oracle Enterprise Manager Cloud Control 12c (session ID# CON6511) Oracle DEMOgrounds: Floor plan – Moscone South Automatic Application and SQL Tuning Automatic Performance Diagnostics Complete Database Lifecycle Management Data Masking and Data Subsetting Database Testing with Oracle Real Application Testing Oracle Enterprise Manager Cloud Control 12c Overview Oracle Exadata Management Hands-on-Labs: Database Performance Testing, Data Masking, and Subsetting (session ID# HOL10720) Database Performance Tuning Hands-on Lab (session ID# HOL10393) Sessions: What’s Next for Oracle Database? (session ID# GEN8259) Building and Managing a Private Oracle Database Cloud (session ID# GEN11421) Using Oracle Enterprise Manager to Manage Your Own Private Cloud (session ID# GEN11423) Extreme Database Management with the Latest Generation of Database Technology (session ID# CON9547) Oracle OpenWorld Music Festival New this year is Oracle’s first annual Oracle OpenWorld Musical Festival, featuring some of today's breakthrough musicians from around the country and the world. It's five nights of back-to-back performances in the heart of San Francisco—free to registered attendees. See the lineup Not Heading to OpenWorld—Watch it Live! Stay Connected: Twitter | Facebook | YouTube | Linkedin | Newsletter Download the Oracle Enterprise Manager Cloud Control12c Mobile app

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  • Unused Indexes Gotcha

    - by DavidWimbush
    I'm currently looking into dropping unused indexes to reduce unnecessary overhead and I came across a very good point in the excellent SQL Server MVP Deep Dives book that I haven't seen highlighted anywhere else. I was thinking it was simply a case of dropping indexes that didn't show as being used in DMV sys.dm_db_index_usage_stats (assuming a solid representative workload had been run since the last service start). But Rob Farley points out that the DMV only shows indexes whose pages have been read or updated. An index that isn't listed in the DMV might still be useful by providing metadata to the Query Optimizer and thus streamlining query plans. For example, if you have a query like this: select  au.author_name         , count(*) as books from    books b         inner join authors au on au.author_id = b.author_id group by au.author_name If you have a unique index on authors.author_name the Query Optimizer will realise that each author_id will have a different author_name so it can produce a plan that just counts the books by author_id and then adds the author name to each row in that small table. If you delete that index the query will have to join all the books with their authors and then apply the GROUP BY - a much more expensive query. So be cautious about dropping apparently unused unique indexes.

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  • SSMS Tools Pack 1.9.3 is out!

    - by Mladen Prajdic
    This release adds a great new feature and fixes a few bugs. The new feature called Window Content History saves the whole text in all all opened SQL windows every N minutes with the default being 30 minutes. This feature fixes the shortcoming of the Query Execution History which is saved only when the query is run. If you're working on a large script and never execute it, the existing Query Execution History wouldn't save it. By contrast the Window Content History saves everything in a .sql file so you can even open it in your SSMS. The Query Execution History and Window Content History files are correlated by the same directory and file name so when you search through the Query Execution History you get to see the whole saved Window Content History for that query. Because Window Content History saves data in simple searchable .sql files there isn't a special search editor built in. It is turned ON by default but despite the built in optimizations for space minimization, be careful to not let it fill your disk. You can see how it looks in the pictures in the feature list. The fixed bugs are: SSMS 2008 R2 slowness reported by few people. An object explorer context menu bug where it showed multiple SSMS Tools entries and showed wrong entries for a node. A datagrid bug in SQL snippets. Ability to read illegal XML characters from log files. Fixed the upper limit bug of a saved history text to 5 MB. A bug when searching through result sets prevents search. A bug with Text formatting erroring out for certain scripts. A bug with finding servers where it would return null even though servers existed. Run custom scripts objects had a bug where |SchemaName| didn't display the correct table schema for columns. This is fixed. Also |NodeName| and |ObjectName| values now show the same thing.   You can download the new version 1.9.3 here. Enjoy it!

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