BLOGS

ByDr. SubraMANI Paramasivam

Microsoft BI – New Features

Top New Features Create high-performance Analysis Services solutions with optimized cube designers, subspace computation, and MOLAP-enabled writeback capabilities Implement enterprise-scale Reporting Services solutions through new on-demand processing and instance-based rendering Build flexible and effective reports with the new Tablix data structure and rich formatting capabilities Expand reach, and empower more users through optimized integration with the 2007 Microsoft Office system.

Boost data warehouse performance

  • Integrate large volumes of data into your data warehouse faster by using SQL Server 2008 Integration Services, and consolidate real-time data by capturing data changes
  • Increase the manageability and performance of large tables with partitioning, which enables you to manage growing volumes of data and users of your SQL Server 2008 data warehouse more efficiently

Consolidate all data for optimized reporting and analysis

  • Work with all of your data and interact the way you want through support for both relational and non-relational data, including new data types such as FILESTREAM & Spatial
  • Incorporate data from multiple sources directly into a single report
  • Use the data source view to integrate data from across the enterprise and create a Unified Dimension Model that consolidates data from heterogeneous, enterprise-wide data stores, such as SQL Server, Oracle, DB2, SAP and Teradata, to create a holistic view of your business, helping end users gain enterprise-wide insight
ByDr. SubraMANI Paramasivam

SQL Server 2008 New Features

With SQL Server 2008 version there are quite a number of new features are added in. Those are listed below. (I know this is pretty old update, but new when SQL 2008 was released).

  1. Installation of SQL Server 2008 with more options
  2. Compressed Backups
  3. Enhanced configuration
  4. Management of Audits with CDC (Change Data Capture)
  5. New Table Value Parameter
  6. Filestream Data types
  7. Sparse Columns
  8. Encryption Enhancements
  9. High Availability
  10. Performance
    1. Performance Data Management
    2. Resource Governor
    3. Freeze Plan
  11. Declarative Management Framework (DMF)
  12. Development Improvements
    1. LINQ Supports
    2. MERGE Statement
  13. Spatial Data type
  14. Analysis Services Improvements
  15. ETL Enhancements
  16. Few on Reporting Services
    1. No longer use of IIS
    2. Better Graphing
    3. Export to Word Support
  17. Some of the Deprecated & Discontinued Features
ByDr. SubraMANI Paramasivam

Memory upgrade can lead to performance issues

I had a live scenario where my servers were upgraded with the memory and all my ETL & Replication were totally down. Couldn’t figure out the actual issue and need to reset the whole process and run manually. I have about 6TB of database and 4Bn records. My initial workout with the admin guy is to find out the server problem itself and then came out with the server is kind of parallelized with the faulty motherboard. I have 2 processor and equal amount of RAM supplied to both of them. When the memory was upgraded equally one part of the processor couldn’t recognize the memory and found the faulty motherboard. One side it was good to find out the actual memory in place helped to identify and replace the faulty one. But on the other side the production system was totally disastrous. Then need to configure with the resource governor to distinguish the workload to help more for replication and also the default one. After the resource governor was setup properly, the following query produced the results to show average time take per millisecond.

SELECT
rpool.name as PoolName,
COALESCE(SUM(rgroup.total_request_count), 0)as TotalRequest,
COALESCE(SUM(rgroup.total_cpu_usage_ms), 0)as TotalCPUinMS,
CASE
WHEN SUM(rgroup.total_request_count) > 0 THEN
SUM(rgroup.total_cpu_usage_ms) /SUM(rgroup.total_request_count)
ELSE
0
END as AvgCPUinMS
FROM sys.dm_resource_governor_resource_pools AS rpool LEFT OUTER JOIN
sys.dm_resource_governor_workload_groups AS rgroup
ON rpool.pool_id = rgroup.pool_id
GROUP BY rpool.name
GO

Result:

PoolName TotalRequest TotalCPUinMS AvgCPUinMS
——————————————————————————–
PP_BusUsers 0 0 0
PP_SSUsers 0 0 0
distribution 2613809 30510900 11
default 5730860 179191854 31
internal 0 4966873 0

ByDr. SubraMANI Paramasivam

How to create a Linked Server?

This article will help you create your a new linked server from one instance to another instance.

1. Connect to the 1st instance of SQL Server.

2. Under “Server Objects” look for “Linked Servers” and right click on it and select “New Linked Server”. A new popup box will appear like the below one.

 

3. In the linked server text box, type the second instance name.

4. In the server type choose Other data source and then select SQL Server Native Client 10.0.

5. In the product name and data source key in the same instance name that was entered in point 3 above. The entry in point 3 is to make sure that we know what we are connecting to.

6. In the catalog key in the specific database name that you want to connect to.

7. In the security tab, click “Be made using this security context” option and key in a remote login & password that already has access to the second instance. If not available then create a new one and put that information here.

8. Thats it, you are now done creating Linked Server.

If you have any issue in creating a linked server then you may not have enough permission on the instance. Even if you have sysadmin access and have problem creating it then get in touch with me on info@yoursqlman.com for further information.

All the best!

ByDr. SubraMANI Paramasivam

How to browse the database objects through Linked Servers

Without actually connecting to another instance of SQL server, is it possible to browse the database objects like tables & views? The answer is YES. How do I do that? Well, for a working scenario we need at least 2 SQL instances either on same server or on a different servers. If you have already not created the Linked server, click here to see this article and then do the below steps.

1. Connect to the 1st instance of SQL Server in Management Studio.

2. Browse through the folders to see “Server Objects” and look for “Linked Servers”. Click the plus sign on it to expand.

3. Now click on the plus (+) sign that is already configured and choose the name of the linked server and then expand Catalogs.

4. Here you can see the number of databases and expand it.

5. You will only see Tables & Views and not the stored procedures or any other objects.

6. You can right click on any table and select “Script Table as” and click on “Select to” => New Query window.

7. You can see a query automatically created pointing to the table in a 4 point convention (…).

Note: Writing any linked server queries for production usage will obviously have performance problems. If the SLA is agreeable then you can proceed or you need to take extra measure. If you have any issue in tackling these type of issues, do get in touch with info@yoursqlman.com for further information.