tempdb

Do CTEs use any space in tempdb or does it use memory exclusively? I've tagged the question with both mssql 2005 and 2008 as I use both. I'll try not to copy/paste MSDN It doesn't matter. A CTE is independent of query execution: it is only a language construct. Think of it as neat derived table or subquery. This means that except for recursive CTEs (see later), all CTEs can be coded inline. If you use the CTE code once, it is for readability . If you use the CTE twice or more, then it is defensive: you don't want to make a mistake and have the derived table different each use. Where a CTE is

Msg 1101, Level 17, State 10, Line 12 Could not allocate a new page for database 'TEMPDB' because of insufficient disk space in filegroup 'DEFAULT'. Create the necessary space by dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup. What does this mean in plain English. I've found that the normal cause of such explosive growth of TempDB is a query, either ad hoc or in a stored procedure, that has an unexpected many-to-many join in it that some refer to as an "Accidental Cross Join". Behind the scenes, it can

We are having some issues with our production SQL Server. Server: Dual Quad Core Xeon 8 GB RAM Single RAID 10 Array Windows 2003 Server 64-bit SQL Server 2005 Standard 64-Bit There is about 250MB of free RAM on the machine right now. SQL Server has around 6GB of RAM, and our monitoring software says that only half of the SQL Server allocated RAM is actually being used. Our main database is approximately 20GB, with about 12GB being used with any frequency. Our tempdb is at 700MB. Both are located on the same physical disk array. Additionally, using Filemon, I was able to see that the tempdb

I am planning a fresh installation of SQL Server 2005 on a new machine, which I have to order. I know that tempdb tuning is very important to the overall performance of the SQL Server instance. I've read that it's best practice to create as many tempdb files as you have CPU's (or cores?). Is that correct? Are there any other recommendations, e.g. for harddisk/RAID setup configuration I should pay attention to? Thanks! If I had to pick one person that I trust for advice on configuring a server, it would be Denny Cherry. He wrote an article explaining this. http://searchsqlserver.techtarget.com

I have created one stored procedure with 7 temporary tables and each temp table is dropped at the end of their own work. I am calling the SP from one web service and same web service we are used for different instance. I have dropped every temp table forcefully but when SP executes it will not delete any of the temporary table which are located in "tempdb/Temporary Table". And, when I open new instance of my application and try to execute same SP it will modify same temp tables. This creates problem for me. it will lock the tables when SP execute simultaneously it will lock the table and my sp

Ok. Here's what I try to run: USE tempdb; SELECT TOP 1000000 IDENTITY(INT, 1, 1) Number INTO Numbers FROM sys.objects s1 CROSS JOIN sys.objects s2 CROSS JOIN sys.objects s3 CROSS JOIN sys.objects s4; This is one of those "make me a numbers table" queries. Here's the problem. If I run this immediately after the SQL Server service is (re)started, it takes forever. Not forever as in ten seconds and I want it faster. Forever as in, I let it go over two hours once by accident and still had to kill it. I'm thinking it just never ever comes back. And ordinarily it takes under two seconds on my

I am trying to understand the tempDB and following are the doubts popping in my mind. What is the lifetime of data in tempDB ? Say a query is doing some Order By and uses tempDB for performing that. After this query finishes, someone else also executes a query which utilizes the tempDB . Will the second query find records written by first query in the tempDB or will they be deleted? Are there any visible tables created inside the tempDB by the Sql Engine? How can I know which temporary table is created because of this query? Is there any naming convention followed by the Sql engine for naming