SQL Scripts « SQLDBPOOL.COM

Steps to Save/Store file into Database

February 16, 2012 Leave a Comment

You can use the below scripts to store/save the file into SQL Server database table. Please note it is not recommended to store file into database. You can store the file on file system and path in the database.

use sqlDBPool
--documents table will store files into varbinary field
--drop table documents
create table documents
(
	documentID int identity(1,1),
	doctype char(5),
	document varbinary(max)
)


--script to store/save document into table
insert into documents 
 Select 'xls', (SELECT * FROM OPENROWSET(BULK N'C:\JSpace\book1.xls', SINGLE_BLOB) AS document) document
go

select * from documents

Filed under SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2011 (Denali) Tagged with How to store image into database, Jugal Shah, save file into table, SQL Script, SQLDBPool, store, T-SQL

@@MICROSOFTVERSION Function

February 12, 2012 Leave a Comment

Problem: Take an example you are writing a script which is going to be deployed on the all the versions of SQL Servers and you want to check the SQL Server version details using T-SQL code. Below solution will guide you how to check the SQL Server version in stored procedure/t-sql batch.

Solution: You can use the @@MICROSOFTVERSION to get the SQL Server version information. If the output of the below script is 9 than its SQL 2005, if 10 than SQL Server 2008 and if 11 than SQL Server 2011

select @@VERSION

--method - 1
select @@MICROSOFTVERSION as MSVersion, CAST (@@MICROSOFTVERSION as BINARY(5)) as MsVersionInBinary
-- Remove the first non-zero character after 0x0 from binary output here it is A and divide the @@MicrosoftVersion outout 
select substring(cast(@@MICROSOFTVERSION/0x000000640 as varchar(10)),1,2) as MsSQLVersion

--Method 2
select @@MICROSOFTVERSION / POWER(2,24) as usingPowerFunctionMSSQLVersion

Filed under Database, SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2011 (Denali) Tagged with @@MICROSOFTVERSION, How to check SQL Version, Jugal Shah, SQL Script, SQLDBPool, T-SQL

Steps to create the deadlock scenario

February 12, 2012 1 Comment

A deadlock occurs when two or more processes permanently block each other by each process having a lock on a resource which the other process are trying to lock.

Please execute the below queries as per the mentioned comments to produce a deadlock.

--turning on the traceflag to record deadlock info into error log
dbcc traceon(1204,-1)
dbcc tracestatus(1204)

--creating test database
create database sqlDBPool
--Connecting to SQLDBPool database
use sqldbpool
--table creation
create table tb1 (col1 int)
create table tb2 (col1 int)
--inserting dummy records
insert into tb1 values(1),(2),(3)
insert into tb2 values(1),(2),(3)

--Open first connection to update table explicit transaction
begin transaction
  update tb1 set col1 = 5
  
--Open second connection to update table explicit transaction
use sqlDBPool
begin transaction
  update tb2 set col1 = 6
  update tb1 set col1 = 6

--Open first connection to update table explicit transaction
  update tb2 set col1 = 5

You can see the one of the transaction will fail with the below error message.

Msg 1205, Level 13, State 45, Line 3 Transaction (Process ID 55) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.

As we have turned on the deadlock trace flag, you can see the below information in the SQL Server error log.

Starting up database 'sqlDBPool'.
Deadlock encountered .... Printing deadlock information
Wait-for graph
NULL
Node:1  
RID: 9:1:153:0                 CleanCnt:2 Mode:X Flags: 0x3
 Grant List 1:
   Owner:0x05684480 Mode: X        Flg:0x40 Ref:0 Life:02000000 SPID:52 ECID:0 XactLockInfo: 0x065F82A8
   SPID: 52 ECID: 0 Statement Type: UPDATE Line #: 1
   Input Buf: Language Event: update tb2 set col1 = 5
Requested by: 
  ResType:LockOwner Stype:'OR'Xdes:0x05A8CC10 Mode: U SPID:55 BatchID:0 ECID:0 TaskProxy:(0x05A70354) Value:0x6767b20 Cost:(0/432)
NULL
Node:2  
RID: 9:1:155:0                 CleanCnt:2 Mode:X Flags: 0x3
 Grant List 2:
   Owner:0x067679A0 Mode: X        Flg:0x40 Ref:0 Life:02000000 SPID:55 ECID:0 XactLockInfo: 0x05A8CC38
   SPID: 55 ECID: 0 Statement Type: UPDATE Line #: 3
   Input Buf: Language Event: begin transaction    update tb2 set col1 = 6    update tb1 set col1 = 6
Requested by: 
  ResType:LockOwner Stype:'OR'Xdes:0x065F8280 Mode: U SPID:52 BatchID:0 ECID:0 TaskProxy:(0x0941A354) Value:0x6a943a0 Cost:(0/432)
NULL
Victim Resource Owner:
 ResType:LockOwner Stype:'OR'Xdes:0x05A8CC10 Mode: U SPID:55 BatchID:0 ECID:0 TaskProxy:(0x05A70354) Value:0x6767b20 Cost:(0/432)

Filed under Database, DB Articles, SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2011 (Denali) Tagged with Deadlock, deadlock scenario, Deadlock trace flag, Jugal Shah, Script, SQLDBPool, T-SQL

SP_Configure

February 11, 2012 1 Comment

Sp_Configure procedure is used to display or change the SQL Server setting. Once you execute the SP_Configure procedure it will display the below columns in the output.

name – Name of the configuration parameter
minimum – Minimum value setting that is allowed
maximum – Maximum value that is allowed
config_value – value which currently configured
run_value – value which currently running

How to update the configuration value?
Here I will show you how to enable the XP_CmdShell using SP_Configure. Please note don’t update configuration values until you are sure, otherwise it will affect the your SQL Server performance and behavioral.

--XP_Cmdshell is an andvanced option, enbale the advanced option
EXEC sp_configure 'show advanced options', 1
GO
--Enable the advance option
RECONFIGURE
GO
--enable the xp_cmdshell
EXEC sp_configure 'xp_cmdshell', 1
GO
--Reconfigure the xp_cmdshell value
RECONFIGURE
GO

What is the difference between Config_Value and Run_Value?

When we change the Configuration Parameter value as above it will update the Config_Value filed only, but wouldn’t be in effect until you run reconfigure command. Once the reconfigure command execute or SQL Server restarted, SQL Server will run as per the new configured value.

You can get the description of the configuration parameters from books online or you can query sys.configurations and check for the description column.

select
*
from
sys.configurations
Output of the Sp_Configure

Name	Minimum	Maximum	Value	Run Value
access check cache bucket count	0	16384	0	0
access check cache quota	0	2147483647	0	0
Ad Hoc Distributed Queries	0	1	0	0
affinity I/O mask	-2147483648	2147483647	0	0
affinity mask	-2147483648	2147483647	0	0
Agent XPs	0	1	1	1
allow updates	0	1	0	0
awe enabled	0	1	0	0
backup compression default	0	1	0	0
blocked process threshold (s)	0	86400	0	0
c2 audit mode	0	1	0	0
clr enabled	0	1	0	0
common criteria compliance enabled	0	1	0	0
cost threshold for parallelism	0	32767	5	5
cross db ownership chaining	0	1	0	0
cursor threshold	-1	2147483647	-1	-1
Database Mail XPs	0	1	0	0
default full-text language	0	2147483647	1033	1033
default language	0	9999	0	0
default trace enabled	0	1	1	1
disallow results from triggers	0	1	0	0
EKM provider enabled	0	1	0	0
filestream access level	0	2	0	0
fill factor (%)	0	100	0	0
ft crawl bandwidth (max)	0	32767	100	100
ft crawl bandwidth (min)	0	32767	0	0
ft notify bandwidth (max)	0	32767	100	100
ft notify bandwidth (min)	0	32767	0	0
index create memory (KB)	704	2147483647	0	0
in-doubt xact resolution	0	2	0	0
lightweight pooling	0	1	0	0
locks	5000	2147483647	0	0
max degree of parallelism	0	64	0	0
max full-text crawl range	0	256	4	4
max server memory (MB)	16	2147483647	2147483647	2147483647
max text repl size (B)	-1	2147483647	65536	65536
max worker threads	128	32767	0	0
media retention	0	365	0	0
min memory per query (KB)	512	2147483647	1024	1024
min server memory (MB)	0	2147483647	0	0
nested triggers	0	1	1	1
network packet size (B)	512	32767	4096	4096
Ole Automation Procedures	0	1	0	0
open objects	0	2147483647	0	0
optimize for ad hoc workloads	0	1	0	0
PH timeout (s)	1	3600	60	60
precompute rank	0	1	0	0
priority boost	0	1	0	0
query governor cost limit	0	2147483647	0	0
query wait (s)	-1	2147483647	-1	-1
recovery interval (min)	0	32767	0	0
remote access	0	1	1	1
remote admin connections	0	1	0	0
remote login timeout (s)	0	2147483647	20	20
remote proc trans	0	1	0	0
remote query timeout (s)	0	2147483647	600	600
Replication XPs	0	1	0	0
scan for startup procs	0	1	0	0
server trigger recursion	0	1	1	1
set working set size	0	1	0	0
show advanced options	0	1	1	1
SMO and DMO XPs	0	1	1	1
SQL Mail XPs	0	1	0	0
transform noise words	0	1	0	0
two digit year cutoff	1753	9999	2049	2049
user connections	0	32767	0	0
user options	0	32767	0	0
xp_cmdshell	0	1	1	1

Filed under DB Articles, SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2 Tagged with Configuration Parameters, How to enable XP_CmdShell, Jugal Shah, SP_Configure, SQL Script, SQLDBPool, T-SQL

Script to find out most CPU bound Queries

February 3, 2012 1 Comment

Execute below query to get TOP 25 completed queries which have the highest cumulative CPU usage

SELECT highest_cpu_queries.plan_handle, 
(highest_cpu_queries.total_worker_time/highest_cpu_queries.execution_count) AS AverageCPU, highest_cpu_queries.execution_count, highest_cpu_queries.total_worker_time, highest_cpu_queries.plan_generation_num, highest_cpu_queries.creation_time, highest_cpu_queries.last_execution_time, 
highest_cpu_queries.last_physical_reads, highest_cpu_queries.min_physical_reads,
q.dbid, q.objectid, q.number, q.encrypted, q.[text]
FROM (SELECT TOP 25 qs.plan_handle, qs.total_worker_time, qs.last_execution_time,
qs.plan_generation_num, qs.creation_time, qs.execution_count, qs.last_physical_reads,
qs.min_physical_reads FROM sys.dm_exec_query_stats qs 
ORDER BY qs.total_worker_time DESC) AS highest_cpu_queries 
CROSS APPLY sys.dm_exec_sql_text(plan_handle) AS q 
ORDER BY AverageCPU DESC

Above script will return the queries which are completed. You can check the active sessions and CPU details using below query.

SELECT SPID, CPU, s2.text, open_tran, status, program_name,
net_library, loginame FROM sys.sysprocesses 
CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS s2  
where cpu > 5000 and status = 'runnable'

Filed under SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2 Tagged with Jugal Shah, Performance Tuning, SQL Optimization, SQL Scripts, SQLDBPool, TSQL

How to insert value into IDENTITY column?

February 3, 2012 1 Comment

If you will try to insert the value into Identity column you will get the one of the below error.

Error 1:
Msg 544, Level 16, State 1, Line 1
Cannot insert explicit value for identity column in table ‘Employee’ when IDENTITY_INSERT is set to OFF.

Error 2:
Error 8101 An explicit value for the identity column in table can only be specified when a column list is used and IDENTITY_INSERT is ON

Solution:
Write SET IDENTITY_INSERT table name ON before the insert script and SET IDENTITY_INSERT table name Off after insert script.

Example,

use db1

create table Employee
(
	myID int identity(100,1),
	name varchar(20)
)

insert into Employee(name) values('Jugal')

--if i will try to insert the value into Identity column it will fail
insert into Employee(myID,name) values (101,'DJ')

--you can add the data into identiy column by turning on the IDENTITY_INSERT ON

SET IDENTITY_INSERT Employee ON
	insert into Employee(myID,name) values (101,'DJ')
SET IDENTITY_INSERT Employee OFF

Filed under SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2 Tagged with Identity, Jugal Shah, SQL Documentation, SQL Download, SQL Error Messages, SQL Query, SQL Scripts, SQL Security, SQL Server, SQL Tips and Tricks, SQLDBPool, T-SQL, Technology

Different ways to check the SQL Server Instance Port number

January 18, 2012 1 Comment

Problem: If there are multiple SQL instances running on the same computer, it is difficult to identify the instance port number. You can use the below solution to find the instance specific port numbers.

Solution: You can check the list of port number used by the SQL Server instances using one of the below way.

Soln 1# Using SQL Server Configuration Manager

Go to SQL Server Configuration Manager
Select Protocols for SQL2005/2008 under SQL server Network Configuration
Right click on TCP/IP and select Properties
Select the IP Addresses-tab
In the section IP ALL, you can see the ports

Soln 2#From Registry Values
SQL Server 2005
Type the regedit command in Run window and check the below registry values.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.#

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\ MSSQL.#\ MSSQLServer\ SuperSocketNetLib\TCP\IPAll

SQL Server 2008
Default instance
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQLServer\SuperSocketNetLib\TCP\IPAll

Named instance
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10.(InstanceName)\MSSQLServer\SuperSocketNetLib\TCP\IPAll

Soln 3# Error Log
Query the error log as below to get the port number.

EXEC xp_readerrorlog 0,1,”Server is listening on”,Null

Soln 4# Command Prompts
Execute the below command from the command prompt.

Netstat -abn

Filed under SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2011 (Denali) Tagged with Default Port Number, SQL Troubleshooting, T-SQL Script, Unable to Connect

Dedicated Administrator Connection

November 18, 2011 Leave a Comment

DAC: Dedicated Administrator Connection feature is available from the SQL Server 2005. It is available in all the higher editions by default except express edition. DAC will be useful when SQL Server is not responding any connections; in such kind of situation DBA will connect through the DAC and troubleshoot/fix the issue.

You can execute below kind of command for the initial troubleshooting.

-- Locking Info
SELECT * FROM sys.dm_tran_locks
GO
-- Running Sessions
SELECT * FROM sys.dm_exec_sessions
GO
-- Requests Status
SELECT * FROM sys.dm_exec_requests
GO
--Open Sessions
SP_WHO2
--To get the SQL Text
DBCC OPENTRAN (SPID)
--To terminate the curlprit process
KILL SPID

DAC is disabled by default, it is a good practice to enable the DAC. You can enable the DAC using by executing below query.

Use master
GO
--0 = Allow Local Connection,
--1 = Allow Remote Connections*/
sp_configure 'remote admin connections', 1
GO
RECONFIGURE
GO

You can connect using DAC on of the following method.
Command Prompt
SQL Server Management Studio

Using Command Prompt: Use SQLCMD utility to connect to SQL Server as below.
-A argument is to specify the DAC connection.
-S argument is to specify the server name.
-d argument is to specify the database name.
-E argument is for windows connection with integrated security true

Using Management Studio: Write ADMIN: before the server name in management studio connection window. It will give you the DAC connection.

To enable the DAC connection in SQL Server express edition add ;-T7806 trace flag as startup parameter.

Go into configuration manager — right click on SQL Server Service and select properties — go into advanced tab and add the trace flag ;-T7806. Once done restart the SQL Server Services.

Filed under SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2 Tagged with Database, Dedicated Administrator Connection, FAQs Help and Tutorials, Microsoft, Microsoft SQL Server, Select (SQL), SQL, SQL Server Express, SQL Server Management Studio

Script to find out Heap Table/Table without clustered Index

November 17, 2011 Leave a Comment

Heap Table: Table without a clustered index is called Heap Table. You can find out the Heap Table by querying the sys.indexes or sys.partitions against the index_id column.

select OBJECT_NAME(object_id),* 
from sys.indexes where index_id = 0

Select OBJECT_NAME(object_id),*  
from sys.partitions where index_id = 0

Filed under SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2011 (Denali) Tagged with Heap Table, Index, Jugal Shah, SQL Optimization, SQL Script, SQLDBPool

T-SQL to Check SQL ErrorLog file location

October 10, 2011 Leave a Comment

At the start up of SQL Server records the startup parameter details into the error log.

You can query the error log to check the error log file physical location.

USE master
GO
xp_readerrorlog 0, 1, N'Logging SQL Server messages in file', NULL, NULL, N'asc'
GO

Filed under SQL Scripts

Script to Monitor the progress of ALTER, Backup, Restore, DBCC, Rollback and TDE commands

March 29, 2011 Leave a Comment

We often like to check the progess or completed percentage of time consuming command. You can query the sys.dm_exec_requests DMV to check the status of the command.

You must have atleast view state permission to execute the below query.
ALTER INDEX REORGANIZE
AUTO_SHRINK option with ALTER DATABASE
BACKUP DATABASE
DBCC CHECKDB
DBCC CHECKFILEGROUP
DBCC CHECKTABLE
DBCC INDEXDEFRAG
DBCC SHRINKDATABASE
DBCC SHRINKFILE
RECOVERY
RESTORE DATABASE
ROLLBACK
TDE ENCRYPTION

SELECT dmr.session_id,
       dmr.status,
       dmr.start_time,
       dmr.command,
       dmt.TEXT,
       dmr.percent_complete
FROM sys.dm_exec_requests dmr  CROSS APPLY sys.Dm_exec_sql_text(dmr.sql_handle) dmt WHERE dmr.command IN (‘ALTER’, ‘Backup’, ‘Restore’, ‘DBCC’, ‘Rollback’,  ‘TDE’)

Filed under Database, SQL Scripts, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2011 (Denali)

How to Check When SQL Server was installed?

March 28, 2011 Leave a Comment

NT AUTHORITY\SYSTEM login gets created when we install SQL Server. By querying sys.syslogins, we would get an idea of the SQL Server Installation date time as per the creation date time of NT AUTHORITY\SYSTEM.

SELECT createdate AS sql_server_install_date FROM sys.syslogins WHERE sid = 0×010100000000000512000000

SELECT * FROM sys.syslogins WHERE sid = 0×010100000000000512000000

SELECT createdate AS sql_server_install_date FROM   sys.syslogins WHERE  sid = 0x010100000000000512000000

SELECT * FROM   sys.syslogins WHERE  sid = 0x010100000000000512000000

Filed under SQL Scripts, SQL Server Tagged with SQL Server Installation Date

← Older posts

SQLDBPOOL.COM

Steps to Save/Store file into Database

@@MICROSOFTVERSION Function

Steps to create the deadlock scenario

SP_Configure

Script to find out most CPU bound Queries

How to insert value into IDENTITY column?

Different ways to check the SQL Server Instance Port number

Dedicated Administrator Connection

Script to find out Heap Table/Table without clustered Index

T-SQL to Check SQL ErrorLog file location

Script to Monitor the progress of ALTER, Backup, Restore, DBCC, Rollback and TDE commands

How to Check When SQL Server was installed?

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