ORACLE : STAGE1 : SERVER STAGE2: ONLY 1 DATABASE STAGE3: MORE THAN ONE SCHEMA IN DATABASE If you execute any script at serve level, because there is only one database, it can give you results. Help please as I am trying to set up the connection to the dbase where the user will only be able to see a select set of tables, views and with either userid pass word via ms sql mang console or ODBC have just select access to tables for users, keeping things locked down from the user
you need to have one table that stores personal details, lets say TableA Another table that stores Test results, lets say TableB Another table that stores Medicines, lets Say TableC And one common key that joins these tables, meaning implementing one to many relation ship, by creating foreign key constraints on tables. On the same DB I m running another insert query using Union all to insert data in 11 columns this is taking 1 sec for 1000 records but other query which is inserting data in 20 columns taking 5 sec
Parallel processing: Using parallel SQL effectively
SearchStorage DDN EXAScaler brings PB HPC storage to midrange EXAScaler 7000 midrange HPC storage scales to nearly 5 PB in 42U of rack space and includes an embedded Lustre file system. Parallel processing is typically used for Long-running reports Bulk updates of large tables Building or rebuilding indexes on large tables Creating temporary tables for analytical processing Rebuilding a table to improve performance or to purge unwanted rows Parallel processing is not usually suitable for transaction processing environments
If you ever needed to determine how many VLFs are within a database you can run DBCC LOGINFO from within the context database and the total number of rows returned would give you your VLF account. Essentially having too many VLFs can affect performance of any activity that reads from the transaction log such as Replication, AlwaysOn Availability Groups, Mirroring, Database Recovery etc
But in our case it did not made any difference in query execution results and we had to set the MAXDOP to 4 as the server CPU configuration was 4 * 16 core! I have written few recipes with regard to SQL Server configuration practices on my book titled: SQL Server 2008 R2 Administration cookbook. Within the data warehousing (OLAP) design by default SQL Server uses majority of available cores as the queries are complex with many joins and dealing with large amounts of data
Second, the minimum and maximum memory amounts are important, especially since we gave the SQL Server account the permission to lock its pages in memory. John writes: I also like to go to model and change the recovery model from FULL since we use SIMPLE a lot, even in production and also change the datafile autogrowth setting from 1 MB
You can also observe that the estimated CPU costs of the exchange iterators in Query 1 and Query 2 are different because each query handles a different number of filtered rows. Now that you know why Query 1 generated a parallel plan and Query 2 and Query 3 generated serial plans on a system with four logical CPUs, you know that the plans could be different on a system with a different number of CPUs -- because of the changing tipping point
performance - SQL Server 2012 slower than 2008 - Database Administrators Stack Exchange
The bottom scans have a slightly different row number (not significant) but quite different costs: old is 2.49884 (IO 2.28979 CPU 0.20905) vs new 1.59109 (IO 1.53868 CPU 0.0524084). You want your MAXDOP setting to match the number of cores per NUMA node to minimize the number of times a given numa node needs to go outside its own memory for data
As seen below, the ClickOnce Application Deployment Manifest files are located in the ReportBuilder directory for both Report Builder 1.0 and Report Builder 3.0. Disk Queue Length represents the average number of physical read and write requests that were queued on the selected physical disk during the sampling period
Linchi Shea : SQL Server 2008 Page Compression: Using multiple processors
How do you instruct SQL Server 2008 to take advantage of multiple processors? There exists another rebuild option called MAXDOP, which you can use to inform SQL Server of the max number of processors you want the rebuild to use. The key compression method is called page compression, which uses the following three techniques to reduce the space taken up by duplicates on a page: Row compression
Microsoft SQL Server 2008 Resource Governor primer
We subtract the minimum of Pool B as it and the minimum for the default pool as these are dedicated to these pools and are not overlapping with the other pools. While monitoring workloads with Resource Governor, you can selectively prioritize workloads as Low, Medium, or High, and then create workload groups for prioritized workloads
SQLServerCentral.com
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TIP: Setting SQL Max Degree of Parallelism Achieve Big System Center SQL Performance Gains - System Center Central
Press Alt-Shift-H for help","You have unsaved changes are you sure you want to navigate away?":"The changes you made will be lost if you navigate away from this page.","Your browser doesn't support direct access to the clipboard. What is the max degree of parallelism? The Microsoft SQL Server max degree of parallelism (MAXDOP) configuration option controls the number of processors that are used for the execution of a query in a parallel plan
This allows the SQL Server engine to know how many concurrent IO can be issued while maintaining low latency, without relying entirely on the disk access time feedback. If IO is throttled, then the full IO performance capability of the disk system is not realized." See my next post, part 2 of this 4-part series, to see the effects of changing the max degree of parallelism option from the default value of 0 to 1
Is there commendation from Microsoft which value these parameter should look like (2 ,3,4,...) ? Does the compression feature (page) also profit from a increasement of that parameter ? Kind regards Elmar Fecker Juergen Thomas - MSFT 20 Apr 2011 8:30 AM Hi Elmar, in the situation you describe I first would set maxdop to 2 and see whether there is some gain or better utilization of the available CPU resources. However a statement which is hard or nearly impossible to confirm with what is published as licensing guidelines or maximum capacity capabilities between the different SKUs of SQL Server
Learn more Standard SQL Server Standard provides core data management and business intelligence capabilities for non-critical workloads with minimal IT resources. Back to top Other editions Compact edition Microsoft SQL Server Compact edition is a free, embedded database that software developers can use for building ASP.NET websites and Windows desktop applications
Some Suggested SQL Server 2008 R2 Instance Configuration Settings - SQLServerCentral
The idea here is to limit how much memory the buffer pool can use in order to avoid starving other SQL Server components or the operating system for memory. With OLTP workloads, sometimes the Query Optimizer will choose a parallel query plan when a non-parallel query plan would have actually have been less expensive
Back to top SQL Server 2014 in the news Gartner Read Gartner's Magic Quadrant for Advanced Analytics Platforms Read the story Gartner Read Gartner's Magic Quadrant for Business Intelligence and Analytics Platforms Read the story Gartner Read Gartner's Magic Quadrant for Data Warehouse and Data Management Solutions for Analytics 2015 Read the story TechRadar.pro Microsoft SQL Server 2014 review: The database heads into memory for Microsoft's latest release Read the review Back to top SQL Server blog SQL Server 2016 Upgrade Advisor Preview and CTP 2.2 now available 22 Jul 2015 10:00 AM by SQL Server Team Announcing Spark for Azure HDInsight public preview 10 Jul 2015 04:10 PM by T.K. Faster insights on any data Get to insights faster with a complete BI platform that speeds up how you access, analyze, clean and shape both internal and external data
Configuring the Maximum Degree of Parallelism - SQL Server Performance
The effort to split and rejoin a query across more than 8 CPUs often outweighs the benefits of parallelism In some cases, parallel queries in an OLTP environment are chosen by SQL Server to circumvent poor design and maintenance practices, most often as a result of missing indexes or out of date statistics. November 30, -0001 Backing Up a SQL Server Database Directly Onto a Remote Server November 30, -0001 Recovering a SQL Server Database from Suspect Mode November 30, -0001 SQL Server T-SQL Tuning - NOT IN and NOT Exists November 30, -0001 SQL Server T-SQL Tuning - Temp Tables, Table Variables and Union November 30, -0001 Improving 2D Range Query Performance in SQL Server July 13, 2015 Controlling Growth of a msdb Database July 6, 2015 Understanding SQL Server Change Data Capture June 28, 2015 Capture SQL Server Deadlocks using Extended Events June 7, 2015 Shopping Basket Analysis in SQL Server May 26, 2015 Forum posts..
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