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SQL Server - Have you observed DBCC SHRINKFILE operation performance, on huge databases?

Published 25 April 8 3:30 AM | SSQA.net

In general it is not a best practice to perform SHRINK database operation on a production server, atleast regularly! Sometimes it may be compulsory to keep them sized in order to ensure the disk storage is not compromised for any sudden changes to databases...

Filed under: sql server, indexes, memory, databases, cache, cpu, monitoring, operating system, huge, dbcc shrinkfile

SQL Server 2008 Spatial data - geography & geometry, all in one

Published 20 March 8 3:32 AM | SSQA.net

Geography & Geometry has much significance in day to day life, within that as a data now you can manage within your Database using SQL Server 2008 new data type - spatial, this represents information about the physical location and shape of geometric...

Filed under: sql server, indexes, 2008, labs, data capture, spatial, data type, links, new features, geometry, geography

SQL Server 2005 Partitioned Tables and Indexes - learning curve

Published 12 March 8 3:1 AM | SSQA.net

When do you need data partitioning? The data you see in relational database may need such a strategy if the volume is huge, for instance the data to store event-log information having the schema such as: [Id] INT (make this primary key clustered), [Unit_Id...

Filed under: sql server, performance, indexes, data, backup, bi, database, statistics, partition, monitoring, strategy, data warehouse

How long DBCC CHECKDB process runs on SQL Server instance?

Published 14 February 8 5:43 AM | SSQA.net

In order to keepup the database logical and physical integrity of all the objects, you must run the DBCC statement such as DBCC CHECKALLOC, DBCC CHECKTABLE and DBCC CHECKCATALOG. Overall you can do this with another statement DBCC CHECKDB that will avoid...

Filed under: sql server, indexes, blogs, maintenance, sqlskills, dbcc checkdb, integrity, consistency

SQL Server 2005 DMV - how it can help to consider whether index is useful or not?

Published 4 February 8 8:6 AM | SSQA.net

When it comes to performance, for a DBA indexes are the first one to come to mind in order to fine tune the tasks on the database. In this series we have already covered this huge topic of indexing and how best you can make use of Dynamic Management Views...

Filed under: sql server, performance, indexes, dmv, dba, performance monitoring, index plan

SQL Server 2005 TSQL to obtain buffers by object (table, index) in the buffer cache?

Published 1 February 8 6:30 AM | SSQA.net

As a programmer interacting with SQL Server's cache is not often needed, but when you do need to determine what is going on with the cache, or you simply need to flush the execution plans or data pages to tune a query, you now have the means to do...

Filed under: sql server, indexes, memory, dmv, cache, buffer, table, tsql, configuration

How SQL Server manages when a database is created in terms of I/O and disk usage?

Published 29 January 8 5:46 AM | SSQA.net

One of the best features you have in the SQL Server is to create database data file (additional) on fly without having a slow performance affect on existing connections. But think about how SQL Server manages to use server threads for the data file that...

Filed under: sql server, performance, management, indexes, windows, i/o, sysmon, disk space, usage, resource, perflib, worker threads, task manager

SQL Server 2005 Enterprise Edition - make data available while creating indexes on large tables!

Published 25 January 8 3:41 AM | SSQA.net

Though it is not a best practice to perform a CREATE INDEX on large tables during the online hours where you have number of users accessing the metadata of SQL Server database. Within SQL Server 2005 Enterprise Edition you can perform ONLINE indexes operation...

Filed under: sql server, performance, indexes, cache, users, tsql, best practice, backups, create, online, monitoring, operating system, busy, creation

SQL Server indexing - when to reorganize or rebuild?

Published 21 January 8 4:30 AM | SSQA.net

Re-organizing or rebuilding index would help the SQL optimizer to reduce the fragmentation for a better performance. In this case few users might have doubt that when to rebuild or reorganize (SQL Server 2005)? IN the series of Performance blog posts...

Filed under: sql server, indexes, msdn, blogs, rebuild, schema, best practice, schedule, links, performance monitoring, reorganize

SQL Server Query Performance - think about page split and fragmentation, measures to reduce the behaviour and best use of dm_db_index_physical_stats DMV

Published 14 January 8 2:22 AM | SSQA.net

It is an universal truth in the database field that due to the fragmentation and page split the performance will be affected even for a simple [ SELECT <ColumnName> from.... ] type of query. So what you need to check or take action in terms of DBA...

Filed under: sql server, performance, indexes, maintenance plan, dmv, dba, best practice, performance monitoring, sys.dm_db_index_physical_stats, measures

Vote now: Index defragmentation best practices for SQL Server 2005 documentation - feedback received from Microsoft

Published 4 January 8 5:35 PM | SSQA.net

May 25 2007- From the snippet of Tibor Karaszi , SQL Server MVP I have raised a feedback form on Connect.Microsoft website to get newer version (SQL Server 2005) about Index Defragmentation Best practices information. Vote your interest to get newer documentation...

Filed under: defragmentation, sql server, indexes, microsoft, i/o, best practices, feedback, sql express, connect

SQL Server SP_HELPINDEX - updated version that includes column names

Published 3 January 8 1:46 PM | SSQA.net

Here is the incentive for the SQL Server users (this new year), you may be aware then using SP_HELPINDEX or SP_HELP could give some part of information on the indexes and database objects. But to know more about depedant columns you need to query INFORMATION_SCHEMA...

Filed under: sql server, indexes, databases, sql queen, script, columns, kalen delaney, sp_help, included, sp_helpindex

SQL Server ETL Performance during Data Load Optimization

Published 20 December 7 8:40 AM | SSQA.net

Do you have a large ETL process to finish on day-to-day basis? Is your ETL process is suffering with performance loss during the BULK insert or export task? Are you using SQL Server 2005? If it is YES for all the above then you can take advantage of SQL...

Filed under: sql server, performance, indexes, backup, etl, disable, bulk insert, slow query, alter index, load

TSQL to findout blocking and locks on a SQL Server?

Published 7 December 7 1:8 PM | SSQA.net

Have you ever performed huge operations such as deleting records of a table and processing inserts on that table at the same time? This is a common task that every application will have to perform and you can avoid by fine tuning your queries (mostly...

Filed under: sql server, performance, indexes, blocking, security, insert, tsql, locks, deletes

Internal Tables in SQL Server 2005, what are they for?

Published 2 November 7 3:17 AM | SSQA.net

By default SQL Server automatically creates the internal tables for Full-text search, XML indexes and Service broker. These are also created when a user query is written poorly that uses tempdb heavily. At they are called internal tables but do not contain...

Filed under: sql server, indexes, security, search, xml, permissions, table, full-text, internal tables

SQL Server 2005 standard query tuning options - plan guide for performance testing how to?

Published 30 October 7 10:41 PM | SSQA.net

You may be aware that plan guides will help the optimizer to perform better and a general recommendation is to use the relevant USE PLAN query hint when the other standard query tuning options are failed. It is also necessary to test through the results...

Filed under: sql server, performance, indexes, services, hotfix, planning, service pack, best practice, testing, plan guide

Stored Procedures caught me with too many recomplies - way out to avoid it

Published 25 October 7 3:35 AM | SSQA.net

A common scenario in SQL Server environment that often application users complained about slow performance and same time you observe high CPU usage/spikes on the SQL Server instance, so better to follow the methods from HighCPU-whyitis blog and still...

Filed under: sql server, performance, indexes, blogs, kba, stored procedure, high cpu, recompile, too many

Update Statistics on huge tables - best practice

Published 23 October 7 6:40 AM | SSQA.net

If you have valid indexes and they are maintained with regular schedule of reindexing to address fragmentation, then you can go with UPDATE STATISTICS on the tables that has frequent updates, say once in 2 days during the quiet time on the databases....

Filed under: sql server, performance, indexes, best practice, update statistics, indexed views

Calculate size of an index for a new database?

Published 17 October 7 2:6 PM | SSQA.net

How can you calculate size of an index in a database whenever a capacity planning exercise if performed? By default the size allocated for each user objects depends on the user application and on the amount of space that is created by the application...

Filed under: sql server, indexes, database, dba, cache, best practices, tempdb, capacity, calculate

Guidelines for enabling indexes and online index operations

Published 8 October 7 8:50 AM | SSQA.net

As a DBA you should now how locking works with tables and how best you can make use of indexing enhancements within SQL Server 2005 version. Until SQL 2000 there was a limited availability of documentation on the guidelines even in the Books online and...

Filed under: dashboard, sql server, performance, management, indexes, databases, indexed view, monitoring