SQL 2012 :: Clear Procedure Cache Of A Single Procedure?

Sep 12, 2014

Is there anyway to clear the procedure cache of a single procedure?

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SQL 2012 :: When Does Database Clear Buffer Cache

Sep 28, 2015

We are troubleshooting a performance problem and the test result is slow the 1st time but the subsequent runs are faster.. Logging out of application and log back in ( connecting to a new database session) did not clear the buffer cache as I thought it would.. When does the database clear the buffer cache? Is it not per database session?

I can issue CHECKPOINT and then run DBCC DROPCLEANBUFFERS to clear the buffers in the disk. But since we are testing from the application,do we need to run these commands via application code to clear buffer/per database session OR can we run these commands from a management studio session?

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SQL2K - Clean Buffer Cache And Procedure Cache.

May 31, 2007

Is there a way to drop clean buffers at the database level instead of the server/instance level like the undocumented €œDBCC FLUSHPROCINDB (@dbid)€??
Is there a workaround for €œdbo€? to be able to flush procedure and data cache without being elevated to €œsysadmin€? server role?

PS: I am aware of the sp_recompile option that can be used to invalidate cached execution plans.

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SQL Server 2012 :: Stored Procedure - How To Return A Single Table

Nov 21, 2013

I have this SP

ALTER PROCEDURE GetDelayIntervalData(@start datetime, @stop datetime, @step int)
DECLARE @steps bigint
SET @steps = DATEDIFF(hour, @start, @stop)/ @step
DECLARE @i bigint
SET @i=0

[Code] ....

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SQL Server 2012 :: Stored Procedure To Update And Insert In Single SP

Jul 17, 2015

I have Table Staffsubjects

with columns and Values

Guid AcademyId StaffId ClassId SegmentId SubjectId Status

1 500 101 007 101 555 1
2 500 101 007 101 201 0
3 500 22 008 105 555 1

I need to do 3 scenarios in this table.

1.First i need to update the row if the status column is 0 to 1
2.Need to insert the row IF SegmentId=@SegmentId and SubjectId<>@SubjectId and StaffId=@StaffId
3.Need to insert the row IF StaffId<>@StaffId And ClassId=@ClassId and SegmentId<>@SegmentId and SubjectId<>@SubjectId

I have wrote the stored procedure to do this. But the problem is If do the update. It is reflecting in the database by changing 0 to 1. But it shows error like cannot insert the duplicate

Here is the stored Procedure what i have wrote

ALTER PROCEDURE [dbo].[InsertAssignTeacherToSubjects]

@AcademyId uniqueidentifier,
@StaffId uniqueidentifier,
@ClassId uniqueidentifier,
@SegmentId uniqueidentifier,
@SubjectId uniqueidentifier

[Code] ....

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SQL Server 2012 :: Displaying Code Of A Stored Procedure To A Single Line

Sep 14, 2015

Any better way to query SQL 2012 to display the code of a stored proc to a single line. I'm trying to write a script to insert the contents of the procs between my devestprod environments. So people can query a single table for any proc that is different between environments. At the moment I am using the syscomments view and the text column but the problem here is if you get a lengthy proc it cuts it up into multiple rows.

I can get around it by converting the text to a varchar(max) and outer joining the query, but as you can see by my code below I have to try and guess what the maximum number of rows I'm going to get back for my largest proc. If someone adds a new one that returns 8 rows I'm going to miss it with this query.

Select col1.[type],col1.[name],convert(varchar(max),col1.text) + isnull(convert(varchar(max),col2.Text),'')
+ isnull(convert(varchar(max),col3.Text),'')
+ isnull(convert(varchar(max),col4.Text),'')
+ isnull(convert(varchar(max),col5.Text),'')
+ isnull(convert(varchar(max),col6.Text),'')
+ isnull(convert(varchar(max),col7.Text),'')

[Code] .....

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How Do U Clear Cache In SQL

Dec 14, 2006

How do u clear Cache in SQL

if i run a query once it takes 10 seconds and if i run the same query again it takes 1 second because it is cached. So i want to know how i can clear it because i want do some benchmarking on a query that is in cache

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Testing Query Performance - Clear Out Cache

Apr 3, 2006

I am trying to improve the performance of a query. No matter how badit runs the first time, it runs really fast the second time.So how can I tell if I've done anything to improve the query if italways comes back quickly after the first run? I assume thequery/data/plan is in cache - how can I clean it out for my session?Thanks in advance for any help you can provide -

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Procedure Cache ?

Nov 1, 1999

I know this might be a dumb one, but what the heck. My new 7.0 server's procedure cache
stays at 100%. After researching this looks like what I want. Nay response appreciated.

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Procedure Cache

Jul 28, 1999

Ours is a MSSQL Server Client server application with very minimal usage of Store procedures.
The proc cache is configured at 5%.I execute "dbcc proccache" to keep track of the proc cache.
I have seen that the "proc cache size" reduces to a very small a amount when there is peak usage.
It starts at 42,000 and comes down to 400, though it is always greater than "proc cache used".
I am worried if this causes crashes.
Please advise why this happens and solutions if any.
Thanks in advance,
Ramakrishna seelam.

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Procedure Cache

Feb 11, 1999

Hello folks!
We are going to install SQL server 6.5 with MSMQ.
And set 128M memory for SQL Server.
What % Procedure cach do you recomend to set?


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Procedure Cache Percentage

Apr 26, 2000

Hi Everybody!

In the application I have, database interaction is mainly through stored procedures.

Currently the setting for procedure cache is 30%. Does anyone have experience with having had changed this and effect on performance?

- Manoj

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Procedure Cache Hit Rate

Feb 9, 2007

I have installed a SQL Server diagnose tool for evaluation. It prompts and warns me that "Procedure Cache hit rate is for example 15%. Its help indicates:

The Procedure Cache Hit Rate alarm is raised when the ratio between the number of times SQL Server looks for a plan in the procedure cache and the number of times it does not find a required plan in the procedure cache falls below a threshold.

A low procedure cache hit rate indicates that SQL Server is finding fewer of the query execution plans it needs already in memory and therefore has to perform more compiles. These extra compilations will degrade SQL Server performance by causing extra CPU load.

What can I do to increase the rate?

Canada DBA

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How Always Keep Specific Query In Procedure Cache ?

Jun 1, 2001

Is any way we can tell sql server to keep specific (long runing) query in procedure Cache.
I already tried to do this by creating job (run every 1 hr from 8 am to 6 pm)
but is not enough


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Increasing The Size Of The Procedure Cache

Jul 15, 2002

Is there a way to increase the size of the procedure cache. Or is it only a auto configuring option.
I have 2gb of memory, and when I check the size of the procedure cache it is just 10mb. I would like to increase this to around 50mb. Not sure if there is an setting to do this. Had a look on BOL could not find anything.


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T-SQL (SS2K8) :: Procedure Cache Hit Ratio

Jun 20, 2014

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...

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Procedure Cache Hit Rate Is Low - Need Advice

Mar 18, 2008

I have a 32 bit SQL 2005 EE clustered installation with 10GB of physical memory and AWE enabled. Our monitoring tool, Spotlight, is reporting the Procedure Cache to be 384MB and a Hit Rate of 75% on a fairly regular basis. Sometimes the Procedure Cache increases to 495MB and a Hit Rate of 82%.

(1) With 2005 can the Procedure Cache be increased?

(2) What is the max size of Procedure Cache?

(3) How do I increase the Hit Rate to a higher percentage?

I do not encounter the issue on any other SQL Server installation, however this is our only cluster.

num proc buffs = 64889
num proc buffs used = 1135
num proc buffs = 1135
active proc cache size = 2896
proc cache used = 364
proc cache active = 364

Thanks, Dave

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When Is Procedure Cache Flushed Or Cleared?

Jul 23, 2005

Using SQL Server 2000. When does SQL flush or clear the procedurecache? I am dynamically creating and dropping stored procedures (SP).Does SQL clear the cache for the SP that has been dropped? If not,when the SP is recreated (with the same name), does SQL use theexecution plan from cache?Thank you in advance.Jack

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Procedure Cache Usage Drops... Why?

Apr 28, 2008

My server (SQL 2005 SP2) typically runs with a procedure cache usage of about 92% or higher... lately it seems like at some point in time during the day it just drops to anywhere between 50% and 65%... with this comes horrible server performance and many snowball effects. If I clear the procedure cache it will go up only about 10% for a minute or two. The only way I can get it to recover completely seems to be restarting the SQL service. Then it will be fine till the next incident. The database is a read only (not set to read only but no updates other than replication). and the same SPs are run over and over and over throughout the day. also did notice that the compiles of the SPs goes up drastically at this point also. not sure if this is part of the cause or part of the effect.

CPU is normal. response from anything (even sp_who) is slow.

i do not understand the way procedure cache works completely so I thought I would ask for some direction.

Any ideas where to look or where to start???
Any thing I can do to catch this when it happens would be great.

thanks a head of time.

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SQL Server 2012 :: CLR Procedure Takes Ages To Pass TVP To Stored Procedure?

Jan 21, 2014

On SQL 2012 (64bit) I have a CLR stored procedure that calls another, T-SQL stored procedure.

The CLR procedure passes a sizeable amount of data via a user defined table type resp.table values parameter. It passes about 12,000 rows with 3 columns each.

For some reason the call of the procedure is verz very slow. I mean just the call, not the procedure.

I changed the procdure to do nothing (return 1 in first line).

So with all parameters set from

create proc usp_Proc1
@myTable myTable read only
return 1

it takes 8 seconds.I measured all other steps (creating the data table in CLR, creating the SQL Param, adding it to the command, executing the stored procedure) and all of them work fine and very fast.

When I trace the procedure call in SQL Profiler I get a line like this for each line of the data table (12,000)

SP:StmtCompleted -- Encrypted Text.

As I said, not the procedure or the creation of the data table takes so long, really only the passing of the data table to the procedure.

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Restore Transaction Log Wipes Out Procedure Cache For The Instance

May 30, 2008

from BOL:
Restoring a database clears the plan cache for the instance of SQL Server.

i'm seeing this behavior after log restores as well.

what's the reason the whole procedure cache is flushed?


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SQL Cache Dependency Invalidation - Can It Work On The Procedure Based Command?

Dec 19, 2005

I was wondering if SQL Cache Dependency would be in fact invalidated if:
1.  it was created based on a procedure type command.
2. if the select statement retrieves the data from multiple database tables
 Any help would be more appreciated.  I am stuck with the fact that none of the data bases on sql dependency is invalidated. I spent literally hours to understand what i am doing incorrectly.

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WARNING: Clearing Procedure Cache To Free Contiguous Memory.

Dec 6, 2000

We see the following message in our error log.
WARNING: Clearing procedure cache to free contiguous memory.
It is accomonpanied by fairly intensive CPU activity.
We get this roughly once per working day.

Anyone have any idea why, and what we can do to stop this?


Jim Plant

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SQL Server Admin 2014 :: How To Analyze Large Procedure Cache

Jun 15, 2015

I want to analyze procedure cache, to find inefficient plans and parameter issues.

I do it trow DMV But my requests to DMV are very slow and demand resources because procedure cache is about several GB Actually I dont need on-line analysis.

Is it possible to have fast snapshot of procedure cache?

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SQL Server Admin 2014 :: Procedure Plan Cache Is Cleared Automatically

Sep 17, 2015

The plan cache is cleared automatically (every 30-60 seconds) on our high load OLPT server.

Can't find a reason for it. I have been logging procedure cache thru dm_exec_cached_plans, every second for a couple of minutes.

It shows that it doesn't grow beyond 200Mb. SQLserver has 64Gb available.

DBCC FREEPROCCACHE is not executed.
dm_os_memory_clerks shows the same 200Mb max (approximately).

I disabled the SQL Agent, still happens, so it's not a job causing the problem.

I disabled the Resource Governor, still the same problem.

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Fail To Process Mining Structure With The OLEDB Error: There Is Not Enough Procedure Cache......

Dec 6, 2007

Hi everyone,

I posted a related thread before about this error below when I process a dimension. And seems that the solution by using "ClearCache" can not fingure out the issue when I want to process a mining structure...... .

OLE DB error: OLE DB or ODBC error: There is not enough procedure cache to run this procedure, trigger, or SQL batch. Retry later, or ask your SA to reconfigure SQL Server with more procedure cache.
; Sort failed because there is insufficient procedure cache for the configured number of sort buffers. Please retry the query after configuring lesser number of sort buffers.

Could someone please give me some suggestions?
Your help will be very appreciated:-)


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SQL Server 2012 :: Executing Dynamic Stored Procedure From A Stored Procedure?

Sep 26, 2014

I have a stored procedure and in that I will be calling a stored procedure. Now, based on the parameter value I will get stored procedure name to be executed. how to execute dynamic sp in a stored rocedure

at present it is like EXECUTE usp_print_list_full @ID, @TNumber, @ErrMsg OUTPUT

I want to do like EXECUTE @SpName @ID, @TNumber, @ErrMsg OUTPUT

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Return Single Value From Stored Procedure

Jul 10, 2006

   I am have stored procedure that accepts one parameter and returns a single value
The sp works fine.
My question is how do I set the c# webpage to return the single value.
I need a specific example of how to code.
this is how the code should work.
A blank form is loaded, when the user clicks submit I need the code to pull the Login name from the text box and check to see if it exist. I have the sp working the way I need it to. But I can figure how to pull the single value into a variable in the code behind.
I am using dataset elsewhere on the site, so I created a ds the calls the sp. Can it work this way?

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How To Use LIKE In Stored Procedure With Single Quotes

Jan 23, 2007

I'm trying to build a dynamic sql statement in a stored procedurre and can't get the like statement to work. My problem is with the single quote.  for example LIKE '%@searchvalue%'.  This works fine: select * from view_searchprinters where serialnumber like '%012%' But I can't figure out how to create this in a stored procedure.  What syntax should I use for the line in bold?SET NOCOUNT ON;DECLARE @sn varchar(50)SET @sn = N'012'DECLARE @sql nvarchar(4000)SELECT @sql = 'select top 10 * from view_searchprinters'    + ' WHERE 1 = 1 'SELECT @sql = @sql + ' 'IF @sn IS NOT NULL   SELECT @sql = @sql + 'and serialnumber LIKE ''' + '%' + '@sn' + '%' + ''' 'EXEC sp_executesql @sql, N'@sn varchar(50)', @sn  

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More Than One Insert Query In Single Store Procedure

Apr 12, 2008

I want to write more than one insert query in single store procedure.
Is it possible to insert a row into multiple tables with a single insert into query.
 Thank You.

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Insert Delete Modify In A Single Stored Procedure

Jun 13, 2008

 hi guys,I am using SQL server 2005, i created a table of 4 columns. I want to create a stored procedure which will insert delete and modify the table using flag. all the three insert, delete and update must work in a single stored procedure. pls help me out. Thank You.  

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Stored Procedure To Concatenate Column Value Sin A Single Cell?

Jan 8, 2007

HiI want to achieve the following transformation of data using a storedprocedure.Sourcecol1 col2(varchar)-------------------------1 1.11 1.22 2.12 2.22 2.3=================Desired Resultcol1 col2(varchar)--------------------------1 1.1 | 1.22 2.1 | 2.2 | 2.3=====================Thanks in advance. :)- Parth

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Execution Plan For Single Stored Procedure From Profiler

Apr 13, 2007

I'm trying to get the execution plan for a single stored procedurefrom Profiler. Now, I've isolated the procedure but I get allexecution plans. Any ideas on how to connect the SPIDs so that I onlyget the execution plan for the procedure I'm watching and not thewhole of the server?

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