I can get a snapshot of tables in tempDB, but I would like to track which procs are causing the load in the tempDB.
I think I can sample and record objects in the tempdb, but I would like to record the proc creating the most tempDB usage, and disk read/writes associated with those procs.
The DMV's give usage in the individual DB's, but what's a good way to correlate procs in the DB's to tempdb usage?
The TEMPDB transaction log file keeps growing.The database server is new and the transaction log was presized to 1 GB on installation. After installing a number of databases, the log file grew over a day to 38GB. Issuing a manual checkpoint was the only way to free some space to allow it to be shrunk back to a usable size. The usage of the file is still going up.
I am struggling to find what process is causing the log to be used so heavily. Looking at the log reuse wait desc for tempdb returns "Nothing" and tempdb itself isn't being used very much or growing in size.
We're using SQL Server 2000 and we'd like to be able to track our viewusage to tell which of our views get used most often. This will helpus determine which views we need to concentrate on first foroptimizing, indexing, etc... Does anybody know if there's a way totell when a view is opened?Thanks,Gary
View 3 Replies View RelatedHi,
My problem is the following:
tempdb is currently 20Gb data space and still some applications request more space :eek: .
Since this server contains multiple applications, I'd like to isolate the application
that uses most tempdb space / get a detailed view on who is using what.
It would be ideal if there was a way to find the SQL / temp table
that cause the problem.
Can anyone help me with this problem.
Thanks
Alren
I received an alert from our alerting system that log space for tempdb is used over 60%.
My question is what options do I have to troubleshoot and fix it? If it would be a regular user database, I would check for log_reuse_wait_desc in sys.databases, run another log backup, and maybe some other things. But what I can do with tempdb?
I'm hoping to find help here on the following issue. Here is the setup and situation. I'm running SQL Server 2005, including SSAS. SQL Server holds a database that is about 7GB in size and used to provide the data for my analysis project.
I successfully created cubes, deployed them and worked with them. Then all of the sudden I got error messages that all where related to tempdb and sounded like this:
<...
The operating system returned error incorrect page (expected 1:334039; actual 47:3211311) to SQL Server during a read at offset 0x000000a31ae000 in file 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDATA empdb.mdf'
...>
I run DBCC but nothing came up (please see below). After searching for hours, I increased the initial size of the tempdb and restarted. It was at about 2GB and I brought it up to 4GB. At first it worked but would then fail again.
My best guess is that is has to do with the amount of dimensions and measures that I use in my cube but compared to what I keep reading it is still very small in size.
I have 4 dimensions, 1 with 3-5 attributes and maybe a 150000 rows total in the view I used. Some of the tables hold more records though (~3 million).
Could it by that my server is simply not fast enough (I/O) to keep up with whatever SSAS is doing? I have a hard time to believe that.
Here is what DBCC CHECKDB ('mbox', REPAIR_REBUILD) came back with on my work DB:
<....
DBCC results for 'mBOX'.
Service Broker MSG 9675, State 1: Message Types analyzed: 14.
Service Broker MSG 9676, State 1: Service Contracts analyzed: 6.
Service Broker MSG 9667, State 1: Services analyzed: 3.
Service Broker MSG 9668, State 1: Service Queues analyzed: 3.
Service Broker MSG 9669, State 1: Conversation Endpoints analyzed: 0.
Service Broker MSG 9674, State 1: Conversation Groups analyzed: 0.
Service Broker MSG 9670, State 1: Remote Service Bindings analyzed: 0.
DBCC results for 'sys.sysrowsetcolumns'.
There are 1208 rows in 11 pages for object "sys.sysrowsetcolumns".
DBCC results for 'sys.sysrowsets'.
There are 137 rows in 1 pages for object "sys.sysrowsets".
DBCC results for 'sysallocunits'.
There are 151 rows in 2 pages for object "sysallocunits".
DBCC results for 'sys.sysfiles1'.
There are 2 rows in 1 pages for object "sys.sysfiles1".
DBCC results for 'sys.syshobtcolumns'.
There are 1208 rows in 12 pages for object "sys.syshobtcolumns".
DBCC results for 'sys.syshobts'.
There are 137 rows in 1 pages for object "sys.syshobts".
DBCC results for 'sys.sysftinds'.
There are 0 rows in 0 pages for object "sys.sysftinds".
DBCC results for 'sys.sysserefs'.
There are 151 rows in 1 pages for object "sys.sysserefs".
DBCC results for 'sys.sysowners'.
There are 14 rows in 1 pages for object "sys.sysowners".
DBCC results for 'sys.sysprivs'.
There are 134 rows in 1 pages for object "sys.sysprivs".
DBCC results for 'sys.sysschobjs'.
There are 149 rows in 4 pages for object "sys.sysschobjs".
DBCC results for 'sys.syscolpars'.
There are 1089 rows in 20 pages for object "sys.syscolpars".
DBCC results for 'sys.sysnsobjs'.
There are 1 rows in 1 pages for object "sys.sysnsobjs".
DBCC results for 'sys.syscerts'.
There are 0 rows in 0 pages for object "sys.syscerts".
DBCC results for 'sys.sysxprops'.
There are 32 rows in 12 pages for object "sys.sysxprops".
DBCC results for 'sys.sysscalartypes'.
There are 27 rows in 1 pages for object "sys.sysscalartypes".
DBCC results for 'sys.systypedsubobjs'.
There are 0 rows in 0 pages for object "sys.systypedsubobjs".
DBCC results for 'sys.sysidxstats'.
There are 327 rows in 9 pages for object "sys.sysidxstats".
DBCC results for 'sys.sysiscols'.
There are 645 rows in 6 pages for object "sys.sysiscols".
DBCC results for 'sys.sysbinobjs'.
There are 23 rows in 1 pages for object "sys.sysbinobjs".
DBCC results for 'sys.sysobjvalues'.
There are 372 rows in 116 pages for object "sys.sysobjvalues".
DBCC results for 'sys.sysclsobjs'.
There are 16 rows in 1 pages for object "sys.sysclsobjs".
DBCC results for 'sys.sysrowsetrefs'.
There are 0 rows in 0 pages for object "sys.sysrowsetrefs".
DBCC results for 'sys.sysremsvcbinds'.
There are 0 rows in 0 pages for object "sys.sysremsvcbinds".
DBCC results for 'sys.sysxmitqueue'.
There are 0 rows in 0 pages for object "sys.sysxmitqueue".
DBCC results for 'sys.sysrts'.
There are 1 rows in 1 pages for object "sys.sysrts".
DBCC results for 'sys.sysconvgroup'.
There are 0 rows in 0 pages for object "sys.sysconvgroup".
DBCC results for 'sys.sysdesend'.
There are 0 rows in 0 pages for object "sys.sysdesend".
DBCC results for 'sys.sysdercv'.
There are 0 rows in 0 pages for object "sys.sysdercv".
DBCC results for 'sys.syssingleobjrefs'.
There are 154 rows in 1 pages for object "sys.syssingleobjrefs".
DBCC results for 'sys.sysmultiobjrefs'.
There are 317 rows in 2 pages for object "sys.sysmultiobjrefs".
DBCC results for 'sys.sysdbfiles'.
There are 2 rows in 1 pages for object "sys.sysdbfiles".
DBCC results for 'sys.sysguidrefs'.
There are 0 rows in 0 pages for object "sys.sysguidrefs".
DBCC results for 'sys.sysqnames'.
There are 91 rows in 1 pages for object "sys.sysqnames".
DBCC results for 'sys.sysxmlcomponent'.
There are 93 rows in 1 pages for object "sys.sysxmlcomponent".
DBCC results for 'sys.sysxmlfacet'.
There are 97 rows in 1 pages for object "sys.sysxmlfacet".
DBCC results for 'sys.sysxmlplacement'.
There are 17 rows in 1 pages for object "sys.sysxmlplacement".
DBCC results for 'sys.sysobjkeycrypts'.
There are 0 rows in 0 pages for object "sys.sysobjkeycrypts".
DBCC results for 'sys.sysasymkeys'.
There are 0 rows in 0 pages for object "sys.sysasymkeys".
DBCC results for 'sys.syssqlguides'.
There are 0 rows in 0 pages for object "sys.syssqlguides".
DBCC results for 'sys.sysbinsubobjs'.
There are 0 rows in 0 pages for object "sys.sysbinsubobjs".
DBCC results for 'UHISTFCST'.
There are 2798023 rows in 89218 pages for object "UHISTFCST".
DBCC results for 'SS'.
There are 0 rows in 0 pages for object "SS".
DBCC results for 'MODEL'.
There are 3 rows in 1 pages for object "MODEL".
DBCC results for 'MASKDATA'.
There are 15397 rows in 109 pages for object "MASKDATA".
DBCC results for 'MASK'.
There are 7328 rows in 44 pages for object "MASK".
DBCC results for 'LOC'.
There are 230 rows in 5 pages for object "LOC".
DBCC results for 'LINREGSTATS'.
There are 1285 rows in 59 pages for object "LINREGSTATS".
DBCC results for 'LINREGPARAM'.
There are 29192 rows in 1310 pages for object "LINREGPARAM".
DBCC results for 'HISTSTREAM'.
There are 2 rows in 1 pages for object "HISTSTREAM".
DBCC results for 'HISTFCST'.
There are 3827608 rows in 75573 pages for object "HISTFCST".
DBCC results for 'HIST'.
There are 1666993 rows in 44095 pages for object "HIST".
DBCC results for 'FCST'.
There are 2126837 rows in 27584 pages for object "FCST".
DBCC results for 'EVENT'.
There are 6 rows in 1 pages for object "EVENT".
DBCC results for 'DMDUNIT'.
There are 21661 rows in 981 pages for object "DMDUNIT".
DBCC results for 'DMDGROUP'.
There are 26 rows in 1 pages for object "DMDGROUP".
DBCC results for 'DFUTOSKU'.
There are 29192 rows in 490 pages for object "DFUTOSKU".
DBCC results for 'DFUMAP'.
There are 64957 rows in 1580 pages for object "DFUMAP".
DBCC results for 'DFU'.
There are 136963 rows in 9349 pages for object "DFU".
DBCC results for 'Locations'.
There are 247 rows in 2 pages for object "Locations".
DBCC results for 'DBPARAM'.
There are 1 rows in 2 pages for object "DBPARAM".
DBCC results for 'CALDATA'.
There are 88308 rows in 1066 pages for object "CALDATA".
DBCC results for 'CAL'.
There are 156 rows in 2 pages for object "CAL".
DBCC results for 'ALLOCSTRAT'.
There are 14 rows in 2 pages for object "ALLOCSTRAT".
DBCC results for 'sysdiagrams'.
There are 1 rows in 1 pages for object "sysdiagrams".
DBCC results for 'TOP5080'.
There are 1325 rows in 7 pages for object "TOP5080".
DBCC results for 'sys.queue_messages_1977058079'.
There are 0 rows in 0 pages for object "sys.queue_messages_1977058079".
DBCC results for 'sys.queue_messages_2009058193'.
There are 0 rows in 0 pages for object "sys.queue_messages_2009058193".
DBCC results for 'sys.queue_messages_2041058307'.
There are 0 rows in 0 pages for object "sys.queue_messages_2041058307".
DBCC results for 'MaterialMaster'.
There are 33426 rows in 3463 pages for object "MaterialMaster".
CHECKDB found 0 allocation errors and 0 consistency errors in database 'mBOX'.
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
....>
Now, it turns out my HD was really defragmented so I'm currently running a defrag but this is already driven by pure hope.
Sorry for the lengthy mail but I'm really hoping to find help around here.
Any suggestions is appreciated!
Happy halloween and regards,
Dirk
today I've put in production a big database accessed by 200 concurrent users, this database has READ_COMMITTED_SNAPHOT set to ON.I know that RCSI set to ON is very aggressive on tempDB so I'm monitoring it.I've noticed that the Transaction log space usage (%) on TempDB is slowly but ever increasing, I mean in the last 24 hours I've started from a 99% space free, now we are 37% space free...is it normal? TempDB log is 35GB in size.
View 6 Replies View Relatedproviding a query for fetching the data for CPU Usage, Memory usage, blocking and all details ...
I want to create a job which will run on a Node every 15 min and store data in a table for each instance...
DMV is not giving more stuff and xtended events not sure if i can store that data into a table?
I in a table or partition, the first page is an IAM-Page if I'm not wrong, this page keeps track of the extents.
In the first extent to where the "first_iam_page" points to, the extent is a mixed extent, therefore the pages can be from different tables or partitions, correct? How does my IAM-Page map the right pages to the corresponding table? the following extents are all uniform of one table type, so I guess it doesnt matter then. But n, how does it keep track of which pages belong to which tables in the first extent?
My second question is, the first IAM-Page is obviously an IAM-Page, but there are also GAM , SGAM and PFS Page files... where are they stored? Because when I create a table and insert a big value(8000) into it, it reserves 16KB for that table, one for the IAM-page, and one for the first data-page. But where can I find the GAM,SGAM and PFS page files? or are they not page files, just some other structures?
We have a particular database sat on SQL Server 2012 box along with about 20 other databases.
What I require is a method/Script/Audit that will simply track anyone who logs (successfully / unsuccessful) into this one particular database on the server (The single database is the key as the end user does not want information on any of the other databases that sit on the server), it also has to log time the attempt was made and it must track the logins via SQL Server or the application itself that is attached to the database.
In sql 2012 i want to track the blocking details at a specific time is any query to get the data ?
View 6 Replies View RelatedAny script to identify when Stored Procedures were changed?
View 2 Replies View RelatedI am trying to find out CPU utilization from the history using process.%processor time. I am having dual core CPU with 2 numa nodes each having 16 logical cpus bind to it.
how to calculate the CPU utilization using perfmon.I tried to use SQL query which gives CPU history using SQL DMV, but I am unable to get the exact value. Because in between I have used the same querry to capture my CPU usage on the run day, the value on run day and the query which iam tryting to pull out is different. I am using the same query to pull the history data with providing the date.
-- Get CPU Utilization History (SQL Server 2008 and above)
DECLARE @ts BIGINT
SELECT @ts =(SELECT cpu_ticks/(cpu_ticks/ms_ticks)
FROM sys.dm_os_sys_info);
SELECT SQLProcessUtilization AS [SQLServer_Process_CPU_Utilization],
SystemIdle AS [System_Idle_Process],
100 - SystemIdle - SQLProcessUtilization AS [Other_Process_CPU_Utilization],
[code]....
I am trying to find out what could be causing this issue. Why would we be waiting on cpu when its barely being used. Signal waits are varying from 35 to 55% and cpu usage is only at 5% usage.We are using Windows Server 2012 with SQl Server 2012 Standard edition with cpu5. There are 3 instances on the server each with max memory 50gb memory and the server has a total of 190gb memory. The machine is a 12 core machine with hyperthreading enabled.
View 8 Replies View RelatedI have a function with multiple if ( condition) which is CPU intensive. How could I avoid this.
CREATE FUNCTION prici.[fn_pricipalamt]
(
-- Add the parameters for the function here
@Tcode char(10),
@SecTypeCode1 char(10),
@SecTypeCode2 char(10),
@TradeAmount float,
[Code] .....
I am trying to calculate the number of hours a device has been used and I cant find how. I need a query that calculated and does an average of the number of hrs used in a week.
View 5 Replies View RelatedI have a table which gets updated with the usage figure every week. Any similar t-sql which returns the increase in usage percentage of all the columns.
View 8 Replies View RelatedIt is possible that Data Collection can cause massive increasing MB/sec to tempdb ? I cannot find connection with tempdb and I set cash file, but on same disk.
Or it can be something different? Last two weeks what I checked was Read/Write MB/s to tempdb increasing progressively.
One time it was about 20MB/sec
After it was reseting and again 1MB/sec..
What I checked , External company which install SQL Server made one file for tempdb, next week or during breaktime(it will be possible), I would like make 8files next weekend work.
Now I saw that TempDB mdf was still increased, but using was just 8-10%
I have added ndf to tempdb for checking performance improvement.... Now I want to remove the ndf file... I am using below command...
USE tempdb
GO
DBCC SHRINKFILE (3, TRUNCATEONLY);
GO
use master
go
ALTER DATABASE TEMPDB Remove FILE tempdev1
Results:
DbIdFileIdCurrentSizeMinimumSizeUsedPagesEstimatedPages
23766476643232
Error:-
(1 row(s) affected)
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
Msg 5042, Level 16, State 1, Line 1
The file 'tempdev1' cannot be removed because it is not empty.
Note:
=>I restarted SQLServer from SSMS and then ran same commands mentioned above ,......and getting same error...
=> I executed above commands and restarted services...no change...
How to remove / drop ndf file...
I'm having an argument with our infrastructure architect who has just gone and bought lots of SSD drives to use for our tempdb data and log files, sounds great doesn't it? There is a catch though, his plan is to add the disks to the two available slots in each blade in a RAID0+1 configuration, effectively giving you one usable drive, and adding both data and log files on to one disk.
I then pointed out that SQL Server best practice is to host tempdb data and log files on two separate drive to reduce contention. The architect then basically said that because this isn't spinning disk the issue of drive, r/w contention isn't an issue I don't agree with this and wanted to get some opinions from the community, I'm still advising that two separate disks should be used but someone just went and spent £80k ($150k) on SSDs and doesn't want to back down...
I have around 100 packages (all [packages run at same time) each package calls a stored Procedure once the Stored proc Execution is completed the package will write the log information into a log table, here how can i capture the CPU and Memory usage for execution of each stored proc.
View 2 Replies View RelatedI have been having issues with our SQL server for awhile now. It seems to run out of memory every few days and when I look at the memory dump, the MEMORYCLERK_SQLOPTIMIZER seem to take over memory and eventually cause the server to crash.
Here is the SQL verison we are using: Microsoft SQL Server 2012 (SP1) - 11.0.3460.0 (X64) Jul 22 2014 15:22:00 Copyright (c) Microsoft Corporation Enterprise Edition (64-bit) on Windows NT 6.2 (Build 9200: ) (Hypervisor)..It is on a VM on Windows 2012 server. It has 20gb of RAM allocated to it and the MAX Server Memory is set to 16.5gb.
I have seen the MEMORYCLERK_SQLOPTIMIZER grow to about 11gb at the time of the server crash. Why that is happening? What is causing the memoryclerk_sqloptimizer to get so high? I have looked it up and it looks like it has to do with ad hoc requests, but is there something I can do to bring that memory down when it gets so high so that I can prevent a server crash?Do we just need to add more memory or is there a memory leak somewhere?
I am using SQL 2012 and I am trying to find buffer cache usage by DB objects within a particular DB.
I am running the following query
select
name as DB,
objname as db_object_name,
COUNT(name) as cache_page_count,
COUNT('x')*8.0/1024 as size_mb
[Code] ....
Following are the results:-
DB db_object_name cache_page_countsize_mb
TEST_DBNULL 428 3.34375
TEST_DBsysobjvalues 369 2.882812
TEST_DBsyscolpars 44 0.34375
TEST_DBsysssislog 38 0.296875
....
.....
Question- Why am I getting 428 pages for which there is no corresponding DB object? Why are so many pages present in sys.dm_os_buffer_descriptors but are missing from sys.allocation_units.
I'm looking for monitoring page file usage for SQL Server. Ultimately, I'm trying to prove that there is not a problem with a server and that it is not struggling with the workload, but someone has looked at page file usage and suggested there is a problem.
I've set up performance counters running from a separate server, but the counters relating to page file usage seem wildly inaccurate. E.g., I've got (_Total\% Usage), and (Total)\%Usage Peak), with Total Usage showing a constant value of 64, and the peak showing 92. I've also got Process (sqlservr)Page File Bytes and Page File Bytes Peak, which are showing values like 61,275,688,960 and hardly dropping below this.
If I look at Performance Monitor directly the values shown in here correlate with this, as shown in my first screenshot. However, if I look at resource monitor and look at disk activity, you can see that there is basically nothing going on (screenshot 2).
The server is more than equipped to deal with the workload, and looking at other counters for SQL there is no indication of problems, e.g. page life expectancy has a minimum value showing of 576,258, there is never less than 6GB of free RAM, SQL compilations are at a maximum of 5% of batch requests.
It is a physical server with 2x 8 core multi threaded CPUs, 64GB RAM with 58GB as the SQL server maximum. Hopefully this is enough info, but I'm happy to check anything else.
I know I should probably be posting this in the RS section but I have a Win 2008 R2 server and RS 2012 along with SSIS and Database server installed. I also have SQL 2005 instance with Sql 2005 SSIS running on the server.
I saw that Reporting services was consuming 9gb of ram a few days ago with no published reports. It's just a default install.
So I investigated the settings and the document: [URL]......
I added this section to the reportserver.config file to restrict memory usage
<WorkingSetMaximum>512000</WorkingSetMaximum>
<WorkingSetMinimum>128000</WorkingSetMinimum>
Any example altering the reportserver.config file in your standard build of sql server reporting services?
After carefully analyzing the situation for almost a month, I pulled the trigger and made an exception at work; we did enable trace flag 2371. We have some tables with billion of rows and outdated statistics causing horrible plans. Tried several methods to update those, but did not solve the problem or was too CPU intensive, causing other issues.
Anyway, one of the side effects I am seeing so far is average vCPU went down by almost 40%. Nothing out of usual (besides the flag) has been enabled or was executed. So my assumption is, CPU hungry plans are now gone or reduced.
I have a server which is not running optimally and I checked the default trace. I have around 600 entries in the default trace which are all Missing Column Statistics and the database is tempdb.is_auto_create_stats_on and is_auto_update_stats_on are both 1 for tempdb.
View 2 Replies View RelatedIs it possible to encrypt Master database and tempdb? On executing below query result is showing temdb is encrypted.
SELECT db_name(database_id), encryption_state, percent_complete, key_algorithm, key_length
FROM sys.dm_database_encryption_keys
So we have new servers that are going to be installed with SQL 2012 and I'm debating the wisdom of splitting tempdb with multiple files.
I know it's a myth that performance automatically improves if you split it into a number of files based on processors, but I'm debating the wisdom of putting a file on each of my data / log file drives.
For instance, I have a server with a C: drive (OS), D: drive (Data for system DBs and install of programs - 458 GB), an F: drive for user DB data files (767 GB), and a J: drive for log files (255 GB).
Obviously no files are going on C:. I'm debating on whether or not we should even leave system DBs on the D: drive given in our current 2k8 servers, we end up with Memory.dmp files over flowing the D: drives as well as .cabs and other install / update files that tend to collect on that drive over the years.
But if we leave the system DBs on D:, I'm wondering if adding a second tempdb file to F: and a third to J: will improve query performance or not.
While trying to move the tempdb log file to a different disk, I mistakenly executed the following and then stopped and restarted SQL Server.
USE master
GO
ALTER DATABASE tempdb MODIFY FILE
(NAME = tempdev, FILENAME = 'L:MSSQL11.MSSQLSERVERMSSQLData emplog.ldf')
GO
Now I can't start SQL Server and see this error in the log files:
[code]
2015-08-10 15:28:42.55 spid7s Error: 5171, Severity: 16, State: 1.
2015-08-10 15:28:42.55 spid7s L:MSSQL11.MSSQLSERVERMSSQLData emplog.ldf is not a primary database file.
2015-08-10 15:28:42.55 spid7s Error: 1802, Severity: 16, State: 4.
2015-08-10 15:28:42.55 spid7s CREATE DATABASE failed.
Some file names listed could not be created. Check related errors.
[code]
I did not have remote connections enabled yet, so the resolutions I have found that include sqlcmd or starting in single user configuration are not working. Any way that might allow me to restore the usual tempdb settings, which I think would allow SQL to start again?
I am seeing select * from sys.sysprocess where blocked<>0 is always the report server
ReportServer.dbo.GetSessionData;1 is blocked by ReportServer.dbo.WriteLockSession;1
We have different reporting servers using same database.
Is it require to rebuild indexes on report server and report server temp db on daily basis?
I need a script to Backup & Shrink tempdb.
namesize
tempdev1024
templog64
tempdev21024
tempdev31024
tempdev41024
tempdev51024
tempdev61024
tempdev71024
tempdev81024
I can't believe how many tempdb's there are?
I have a tempdb split into 4 files (5 if you include the log).
Autogrowth is disabled on the mdf/ndf files so that they can be used round robin (1 file per logical CPU).
Is there a way to be alerted when there is x% of free space left?
I know hwo to check the free space via t-sql but want to be able to be alerted. I could run a sql job that reports the free space and send a database mail message if under x% but wondered if there was a built in (or better) method?
I also have SQL Sentry.
SQL 2012 Standard