Hi,
In m*y SQL server 7.0,
when using Performance, I see in graph: Buffer Catche Hit Ratio Counter
(SQLServer Buffer Manager objects)always is maximum (100). What does this mean ? What's the Buffer Catche Hit Ratio?
How do I configure SQL server to performance?
Thanks in advance.
Does anyone know how to measure the buffer cache hit ratio? I have been reading a lot about it but can't find this measurement in Performance Monitor.
Thanks
What is better values for Buffer Cache Hot Ratio in SQL Server 2012. Is the values changed from 2008r2 to 2012?
View 2 Replies View RelatedI am wondering if 100% buffer cache hit ratio is considered not good in general?
Are there instances that it is actually bad and can contribute to server performance degradation?
Any thoughts on the topic most welcome :)
--------------------
keeping it simple...
This issue just happen recently. The buffer cache ratio went from > 90%to 50% and has slowly been climbing back up over 8 hours or so. Itscurrently @ 76%. Is this something I should take action on immediately?It seems to be coming back to normal...
View 1 Replies View RelatedHiI have trouble with MSSQL2000 SP4 (without any hotfixes). During last twoweeks it start works anormally. After last optimalization (about few monthsago) it works good (fast, without blocks). Its buffer cache hit ratio wasabout 99.7-99.8. Last day it starts work slow, there was many blocks anddedlocks. There are no any queries, jobs and applications was added. Nowbuffer cache hit ratio oscilate about 95-98. I try update statistics andreindex some hard used tables, but there is no effect or effect is weryshort (after few hours problem return).Mayby somene know what it could be?Is it possible to estimate how each table (using DBCC SHOW_STATISTICS orDBCC SHOWCONTIG or others) how the table affect on total buffer cache hitratio?Marek---www.programowanieobiektowe.pl
View 1 Replies View RelatedI'm collecting performance data via DMV to check the buffer hit ratio on several servers. Sometimes I get values high above 100% hit Ratio.
Example (50050%):
SQLServer:Buffer Manager:Buffer cache hit ratio 2002
SQLServer:Buffer Manager:Buffer cache hit ratio base 4
Our server administrator forwarded some messages from SCOM that indicate:
SQL DB Engine 2012 Page Life Expectancy and Buffer Cache Hit Ratio is too low
When I logged into the offending server, I could not find anything in the SQL Log File that indicates this.
I was wondering how did SCOM identify this issue - where in SQL Server would this have been reported to SCOM?
Hi,
I'd like to replicate an SQL Server Database to an SDF file. For Simplicity I want to use the SQL Server 2005 Management Console. The Console reports that the maximum buffer size were to small. In the comment (c# code) I can see it is set to 512. How can I increase the value in the replication assistant?
Miroslaw
I'll try and keep this brief so in a nutshell:I have large distributed java system running on a Windows 2003 server(4cpu 8Gb memory).Periodically the following exceptions occurs in the servers:java.net.SocketException: No buffer space available (maximumconnections reached?): recv failedI know for a fact we are not using too many TCPIP sockets or runningtoo many socket servers.I have googled this error and found very little to help me.What buffer space is this?What does recv failed mean?(Is it at all relevant that sql server is running on the same box?)Any advice appreciated.Thanks in advance.Dan
View 5 Replies View RelatedI encountered the following error while attempting to preview an RDL report I was developing in VS2010 using SSDT:"The size necessary to buffer the XML content exceeded the buffer quota"
View 3 Replies View RelatedWe have a set of reports with same header section in all the reports. So while developing a new report i used to copy that header section to the new report with same dataset names (without any change) , but while rendering the report it is throwing error " The size necessary to buffer the XML content exceeded the buffer quota".
View 2 Replies View RelatedHi
I have a master package that executes a series of sub packages run from a SQL Agent job. One of those sub packages has been stable for a week, running at least once per day, but it just failed despite having been run once already today with the same set of input data.
There were a series of errors showing in the event log for the Execute Package Task starting with "Buffer Type 15 had a size of 0 bytes.", then "The buffer manager failed to create a new buffer type.", then "The Data Flow task cannot register a buffer type. The type had 32 columns and was for execution tree 3.", then "The layout failed validation." and finally "Error 0xC0012050 while loading package file "C:[Package].dtsx". Package failed validation from the ExecutePackage task. The package cannot run.".
SQLIS.com reports the constant for the error code as DTS_E_REMOTEPACKAGEVALIDATION ( http://wiki.sqlis.com/default.aspx/SQLISWiki/0xC0012050.html ).
I then ran the package on my dev machine in BIDS and it worked fine, so I re-ran the job on the server and this time that package executed ok, but another one fell over but did not put anything in the event log.
Does any one have any idea what happened?
TIA . . . Ed
Good day everyone,
I'm experiencing a completely random warning from any given row count component within any given data flow task. It occurs sporadically. Whilst distracting, I don't see any adverse effects to the data after the packages complete. Can someone weigh in on this warning and let me know if it is indeed benign or what I maybe able to do to fix it?
Here's the warning:
"A call to the ProcessInput method for input 75997 on component "CNT Rows sent for STG table" (75995) unexpectedly kept a reference to the buffer it was passed. The refcount on that buffer was 4 before the call, and 5 after the call returned."
Thanks,
Langston
On Microsoft performance monitor, what is the difference between SQL Server Cache Manager: Cache Hit Ratio and SQL
Server Buffer Manager: Buffer Cache Hit Ratio? We have a production server where the buffer cache hit ratio is
consistently at 99%, which is normal. However, the cache hit ratio is 73%. What is the difference between the two
hit ratios, and why would we have such a significant difference between the two?
Any help or advice would be much appreciated.
I have some code I build 2 weeks ago which I’ve been running daily but it’s suddenly stopped working with the following error.
“The table "tbl_Intraday_Tmp" has been created, but its maximum row size exceeds the allowed maximum of 8060 bytes. INSERT or UPDATE to this table will fail if the resulting row exceeds the size limit” When I google this there seems to be a related to tables with vast numbers of columns.
My table tbl_Intraday_tmp is relatively small. It has 7 columns. 1 of varchar(5), 3 of decimal(9,3) and 2 of decimal(18,0). The bit I’m puzzled with is it was working and stopped.
I don’t recall changing anything but I wouldn’t rule that out. I ‘ve inspected the source files and I don’t believe they have changed either.
DECLARE
@FileName varchar(50),
@Path varchar(50),
@SqlCmd varchar(1000)
= '',
@ASXCode varchar(5),
@Offset decimal(18,0),
[code]....
I am using MS SQL server 2008, and i have a table with 350 columns and when i m trying to create one more column its giving error with below message -
Warning: The table XXX has been created, but its maximum row size exceeds the allowed maximum of 8060 bytes.
INSERT or UPDATE to this table will fail if the resulting row exceeds the size limit.
how can i resolve this?
SQL Server 2000 8.00.760 (SP3)I've been working on a test system and the following UDF worked fine.It runs in the "current" database, and references another database onthe same server called 127-SuperQuote.CREATE FUNCTION fnGetFormattedAddress(@WorkID int)RETURNS varchar(130)ASBEGINDECLARE@Address1 As varchar(50)@ReturnAddress As varchar(130)SELECT@Address1 = [127-SuperQuote].dbo.tblCompany.Address1FROM[Work] INNER JOIN[127-SuperQuote].dbo.tblCompany ON [Work].ClientID =[127-SuperQuote].dbo.tblCompany.CompanyIDWHERE[Work].WorkID = @WorkIDIF @Address1 IS NOT NULLSET @ReturnAddress = @ReturnAddress + @Address1 + CHAR(13)+ CHAR(10)RETURN @ReturnAddressENDSo now the system has gone live and it turns out that the live"SuperQuote" database is on a different server.I've linked the server and changed the function as below, but I get anerror both in QA and when checking Syntax in the UDF builder:The number name 'Zen.SuperQuote.dbo.tblCompany' contains more than themaximum number of prefixes. The maximum is 3.CREATE FUNCTION fnGetFormattedAddress(@WorkID int)RETURNS varchar(130)ASBEGINDECLARE@Address1 As varchar(50)@ReturnAddress As varchar(130)SELECT@Address1 = Zen.SuperQuote.dbo.tblCompany.Address1FROM[Work] INNER JOINZen.SuperQuote.dbo.tblCompany ON [Work].ClientID =Zen.SuperQuote.dbo.tblCompany.CompanyIDWHERE[Work].WorkID = @WorkIDIF @Address1 IS NOT NULLSET @ReturnAddress = @ReturnAddress + @Address1 + CHAR(13)+ CHAR(10)RETURN @ReturnAddressENDHow can I get round this? By the way, I've rather simplified thefunction to ease readability. Also, I haven't posted any DDL because Idon't think that's the problem!ThanksEdward
View 2 Replies View RelatedThe scenario is as follows: I have a source with many rows. Each row has a column called max_qty_value. I need to perform a calculation using another column called qty. This calculation is something similar to dividing qty/(ceiling) max_qty_value. Once I have that number I need to write an additional duplicate row for each value from the prior calculation performed. For example, 15/4 = 4. I need to write 4 rows to the same target table as in line information for a purchase order.
The multicast transform appears to only support fixed and/or predetermined outputs. How do I design this logic in SSIS to write out dynamic number of rows to a target table.
Any ideas would be greatly appreciated.
thanks
John
I have been seeing this strange statistics in one of our servers. The cache hit ratio has gone beyond 100%, it is currently showing 124%. Has anyone seen this before.
Thanks
I have a large dell server with 4 processors, and 8 gig of memory on win 2000 advanced with sql 2000 enterprise edition running a 3rd party app. My cache hit ratio averages about 76%. I thought the gneral rule was if you get below 80% to add more memory. However my memory manager shows I am only using 71% of my memory and have a full gig available. I have the sql server set to use about 7.1 gig of the 8 gig on the server. My ? is if I am only using 71% of my memory, will will adding more memory actually help my cache hit ratio
View 5 Replies View RelatedHello,
I have a calculated member that is a ratio calculation. It works fine but I would like that the value for the "All" member to be the sum of the children.
So I have the following MDX where the calculated member [Dim Group Rubric].[Group Rubric Description].[BO + ADM Cost] does not give me good results for the "All" member:
WITH
MEMBER [TOTAL YEAR CONTRACT] AS sum({[Total Year]},[Dim Contract].[Contract Number].[563131])
MEMBER [TOTAL YEAR BU] AS sum ([Total Year])
MEMBER [Dim Group Rubric].[Group Rubric Description].[TOTAL BU PVN] as
([Dim Group Rubric].[Group Rubric Description].[PVN], [TOTAL YEAR BU])
MEMBER [Dim Group Rubric].[Group Rubric Description].[TOTAL BU BO + ADM] as
([Dim Group Rubric].[Group Rubric Description].[BO + ADM], [TOTAL YEAR BU])
MEMBER [Dim Group Rubric].[Group Rubric Description].[BO + ADM Cost] as
([Dim Group Rubric].[Group Rubric Description].[PVN], [TOTAL YEAR CONTRACT])
/ ([Dim Group Rubric].[Group Rubric Description].[TOTAL BU PVN], [TOTAL YEAR BU])
* ([Dim Group Rubric].[Group Rubric Description].[TOTAL BU BO + ADM], [TOTAL YEAR BU])
SELECT
NON EMPTY {[TOTAL YEAR CONTRACT],[TOTAL YEAR BU]}
ON 0,
{[Dim Group Rubric].[Group Rubric Description].[BO + ADM Cost]}
*
UNION(
[Dim BV Organisation Finance].[Business Unit].[All]
,FILTER(
[Dim BV Organisation Finance].[Business Unit].children
,[Dim BV Organisation Finance].[Business Unit Code].currentmember.name
= '071MIND1'
)
,FILTER(
[Dim BV Organisation Finance].[Business Unit].children
,[Dim BV Organisation Finance].[Business Unit Code].currentmember.name
<> '071MIND1'
)
)
ON 1
FROM (SELECT ([Dim Year].[Year].&[2008]) ON 0
FROM (SELECT ({[Dim BV Organisation Finance].[Business Unit Code].[071MIND1]
,[Dim BV Organisation Finance].[Business Unit Code].[071DIDD1]}) ON 0
FROM [BV Contract Margin DW]))
When I launch this query I obtain:
TOTAL YEAR BU
BO + ADM Cost All - 45013 (I would like to obtain here - 90651)
BO + ADM Cost 071MIND1 - 35680
BO + ADM Cost 071DIDD1 - 54971
Please do you know what should be changed in this query to obtain the good results?
Thanks.
Guillaume
I have to get the ratio like A:B with two calculated columns. A and B both are the counts of the rows.
Please help me with this, it's really urgent!
HelloI am tring to figure out why our SQL server is a bit sluggish fromtime to time.It is running a dual XEON, with 2.5 GB RAM, and a fast SCSI I/O subsystem setup as follows.OS, mirrored 2 drivesSQL DATA 16 HDD RAID 10SQL LOG 4 HDD RAID 10SQL tempdb 4 HDD RAID 10OS = win 2003SQL = sql2000 standard editiondbcc showcontig shows me nothing special, it looks okI launch performacne monitor and add SQL server cache manager: hitratioand it is constantly at 7% and never changes up or down, it is justconstant.Can this be correct? and if so it sounds rather bad, we have ahandfull of large tables that are heavily used and enough RAM to holdthem all in RAM so I really do not understand why the cache hit ratiois not higher.Any hints would be greatrgdsMatt
View 9 Replies View Related Can anyone pls help me to solve my problem in SSRS. Also I wanted to plot the 'Ratio' in to a chart against the 'Year'.
The scenario is:
Year Amount_A Amount_B Ratio(Amount_A/Amount_B)
05 x y x/y
06 a b a/b
07 m n m/n
Its very needy.
How do I author a SQL Query which meets the following requirement: Display a ratio of (instances where status is a success)/(instances where status is a success or instance is a failure). The below syntax is incorrect. However, I hope to beter explain what I am trying to accomplish using the incorrect SQL query below.
SELECT SUM(Case When Status = "SUCCESS")/SUM( Case When Status = "FALLBACK")
FROM ruleResults;
Maybe I am just a lot better at this than I thought, but I figure that somewhere there is a mathematical rule that is being overlooked. When I run dbcc sqlperf (lrustats) on some of my production machines, I sometimes end up with a cache hit ratio (which is defined as a percentage, mind you) that is slightly over the limit:
Statistic Value
-------------------------------- ------------------------
Cache Hit Ratio 100.00898
Cache Flushes 0.0
Free Page Scan (Avg) 0.0
Free Page Scan (Max) 0.0
Min Free Buffers 331.0
Cache Size 4362.0
Free Buffers 9434.0
I suspect some counter somewhere is getting wrapped around its 4 byte limit. Is there any reliable source for getting statisics about SQL Server performance? Users tend be unreliable and say everything is slow.
I'm putting together some monitor scripts, have buffer cache ratio etc etc but struggling to get an accurate script for the current procedure cache hit ratio...
View 1 Replies View RelatedI am doing some work in microstrategy reports and using SQL data cube. I am creating a summary report (Counting on Unique ID) in MS where when I put in a particular attribute/column from cube it splits the data count down into 2 separate values that I have defined in the select case statement of the SQL query.
I want to work out a ratio of the count unique ID between these two values but can't do this in MS report as it is not a physical column but summary split of data.Is there a way I can do this in SQL? My summary looks something like this:
N E
====================== =========================
**Y** N **Y** N
========= ========== ========= =========
570 140 89 56
Where the Y/N field is the one I have split down against the N/E column. I want to work out ratio between the 2 "Y" fields but in SQL. Here is a SQL example snapshot of my data:
Unique_ID New/Existing Application Attend_Interview
========= ======================== ================
12554445 E Y
65766879 N N
53375654 N Y
44323224 E N
93656786 E Y
wondering if I might be able to do a procedure or similar or something more dynamic in SQL query?
I am checking some ratio numbers for our system engineers, those are
Read/write ratio?
Random/sequential ratio?
Read/write block size?
For Read/write ratio, I am using below query,
SELECT
m.type_desc
, CEILING(sum(num_of_bytes_read*1.0) / (sum(num_of_bytes_read*1.0) + sum(num_of_bytes_written*1.0)) * 100) AS 'Read %'
, CAST((sum(v.size_on_disk_bytes) / 1024.0 / 1024 / 1024) AS MONEY) AS 'FileSizeGB'
[Code] ....
Random/sequential ratio, I googled but cannot find a similar query to get the result?
Sample Query :
SELECT 'A' [Type], 1 AS [NUMERATOR] , 2 AS [DENOMINATOR]
UNION ALL
SELECT 'B' [Type], 2 AS [NUMERATOR] , 4 AS [DENOMINATOR]
UNION ALL
SELECT 'C' [Type], 3 AS [NUMERATOR] , 6 AS [DENOMINATOR]
[Code] ...
I need to show the ratios beside each bar (shown in red) as shown in the above diagram.
I'm trying to use the Ratio to Parent sproc - [URL] .... The problem is that the stored proc appears to be pegged at 4 decimal places (which translates to ##.##%). This is losing precision and isn't adding up to 100% when the ratios are summed individually.
Can this be fixed within SSAS or will i need to modify the assp code? .NET decimals are meant to automagically scale, so not sure why it's coming out as (5,4) but my .net coding knowledge is fairly poor.I get the correct behaviour if hardcode a ratio to parent MDX calc (the resulting ratio has as many decimal points as are required)
I created a PowerPivot measure which is a ratio Ratio = Number of Events/Time calculated on 12 months. I would like the grand total to be this Rate Sum(Number Of Events)/Sum(Time calculated).
In my Pivot I have one measure which I called Value and this value can have different types depending on one attribute.For instance one attribute is number of events, an other one is time and the third one is ratio.I want to display a custom grand total simple sum for events and time and a calculation of my ratio for ratio.
For instance
201501 201502 201503 TOTAL
Number of events 8 10 10 28
Time 5 5
4 14
Ratio 8/5 10/5 10/4 28/14