SQL Server and Postgres Datatypes

SQL Server	Postgres
bigint	numeric(20,0)
binary	bytea
bit	numeric(1,0)
char	character(10)
date	date
datetime	timestamp without time zone
datetime2	timestamp(6) without time zone
datetimeoffset	timestamp(6) with time zone
decimal	numeric(18,0)
float	double precision
geography	character varying(8000)
geometry	character varying(8000)
hierarchyid	character varying(8000)
image	bytea
money	numeric(19,4)
nchar	character(10)
ntext	text
numeric	numeric(18,0)
nvarchar	character varying(10)
real	double precision
smalldatetime	timestamp without time zone
smallint	numeric(5,0)
smallmoney	numeric(10,4)
sql_variant	character varying(8000)
sysname	character varying(128)
text	text
time	time(6) without time zone
timestamp	character varying(8000)
tinyint	numeric(5,0)
uniqueidentifier	uuid
varbinary	bytea
varchar	character varying(10)
xml	xml

postgres equivalent of sql server begin transaction

Comparing Transactions between SQL Server and Postgres.

SQL Server : : BEGIN Transaction  -- Commit Transaction – Rollback Transaction

Postgres      : Begin – Commit – Rollback

Unlike SQL Server , Postgres commits or Rollback the transactions at the First Commit/Rollback comman after any begin statement  and Ignore Subsequent Commit/Rollbacks.

But in SQL Server , Each Begin Transaction requires a Commit/Rollback.

Migrate SQL Server Database to AWS (RDS) or Azure using SSIS

 

Migrate SQL Server Database to AWS (RDS) or Azure using SSIS

If backup and restore is not an option to migrate or copy the whole database which is not an option, specially to migrate managed database services like AWS RDS /Azure or any Environment which has restrictions to restore backups needs Import/Export mechanisms to migrate the data. The top 2 ways to migrate data is through either SSIS (Export Wizard) or BCP. choosing the one from these two depends on whether it has direct access to the destination server (SSIS) or disconnected server (BCP) which needs to copy the data dump and insert the data at the destination. Both these techniques are very familiar to most of the DBAs, here I am highlighting the problems faced with working with these 2 techniques (SSIS/BCP) SSIS Export Wizard: Export Wizard has an option to save an SSIS package without executing. which is pretty good feature, but it has some limitations which needs manual intervention. 1. Identity Insert should be ON for all the tables which has identity key property, Its very tedious manual process to identify which tables has this property and manually enable them in each data flow. 2. Keep Nulls should be on the tables with default values. E.g.: if the table, column which allows nulls and has a date data type with default value as getdate()  then after exporting the data it inserts the date values instead nulls, unless the SSIS dataflow destination property option FastLoadKeepNulls is checked 3. fast load options are not set by default; it has to be set manually for the property sFastLoadOptionsBatchCommit  4. TABLOCK which is not enable by default 5. ROWS_PER_BATCH is not configured by default Above 5 settings have to be done manually.  Without these the package would fail or perform slowly Think about a situation where you need to export 100 tables with millions of rows. Below VbScript will create a new SSIS package with all the above options.  How it works: It replaces specific string in the package to enable the above configuration values in the source code. Note: This has been tested on SQL Server 2008 EE. If this doesn’t work in your environment, then modify the key strings as per the release. Steps: 1. Run the Export export data wizard and save the package to C:\TEMP\northwind.dtsx 2. copy the below vbscript code to a file in C:\TEMP\SetSSIS.VBS  3. Edit the Vbscript, Line 5 "filePath = "<ssis file path>" 4. run the vb script 5. it creates a new package with new name as <PKG_NAME>.NEW 6. open the package in BIDS 7. run the package Before After Const ForReading=1 Const ForWriting=2 Set objFSO = CreateObject("Scripting.FileSystemObject") folder = ".\" filePath = "C:\temp\northwind.dtsx" dim NewrowsPerBatchString NewrowsPerBatchString = "TABLOCK,ROWS_PER_BATCH = 50000</property>" Set myFile = objFSO.OpenTextFile(filePath, ForReading, True) Set myTemp= objFSO.OpenTextFile(filePath & ".new.dtsx", ForWriting, True) dim sIdentity sIdentity =   "name=""FastLoadKeepIdentity"" dataType=""System.Boolean"" state=""default"" isArray=""false"" description=""Indicates whether the values supplied for identity columns will be copied to the destination. If false, values for identity columns will be auto-generated at the destination. Applies only if fast load is turned on."" typeConverter="""" UITypeEditor="""" containsID=""false"" expressionType=""None"">false</property>" sKeepNulls = "name=""FastLoadKeepNulls"" dataType=""System.Boolean"" state=""default"" isArray=""false"" description=""Indicates whether the columns containing null will have null inserted in the destination. If false, columns containing null will have their default values inserted at the destinaton. Applies only if fast load is turned on."" typeConverter="""" UITypeEditor="""" containsID=""false"" expressionType=""None"">false</property>" sFastLoadOptionsBatchCommit = "name=""FastLoadMaxInsertCommitSize"" dataType=""System.Int32"" state=""default"" isArray=""false"" description=""Specifies when commits are issued during data insertion.  A value of 0 specifies that one commit will be issued at the end of data insertion.  Applies only if fast load is turned on."" typeConverter="""" UITypeEditor="""" containsID=""false"" expressionType=""None"">0</property>" sFastLoadOptions = "name=""FastLoadOptions"" dataType=""System.String"" state=""default"" isArray=""false"" description=""Specifies options to be used with fast load.  Applies only if fast load is turned on."" typeConverter="""" UITypeEditor="""" containsID=""false"" expressionType=""None"">" dim x Do While Not myFile.AtEndofStream myLine = myFile.ReadLine If InStr(myLine, sIdentity) Then           myLine=Replace(myLine,"expressionType=""None"">false</property>", "expressionType=""None"">true</property>") End If If InStr(myLine, sKeepNulls) Then           myLine=Replace(myLine,"expressionType=""None"">false</property>", "expressionType=""None"">true</property>") End If If InStr(myLine, sFastLoadOptionsBatchCommit) Then           myLine=Replace(myLine,"expressionType=""None"">0</property>","expressionType=""None"">50000</property>") End If If InStr(myLine, sFastLoadOptions) Then           myLine=Replace(myLine,"expressionType=""None"">","expressionType=""None"">"&NewrowsPerBatchString)   x=instrrev(myLine,NewrowsPerBatchString )           myLine=left(myLine,x+(len(NewrowsPerBatchString)-1)) End If myTemp.WriteLine myLine x="" Loop myFile.Close myTemp.Close 'objFSO.DeleteFile(filePath) 'objFSO.MoveFile filePath&".tmp", filePath BCP Check the below link which is using BCP to migrate the Data.

sql server search job commands

 

Handy query to search a particular command across all the Jobs.

To search all the jobs which are using mail object , set the @keyword value to “Mail”
To search all the jobs which are using external folders , set the @keyword value to “\”
To search all the jobs which are calling DTS packages , set the @keyword value to “.dts”

declare @keyword varchar(max) set @keyword = 'mail' set @keyword = '%'+@keyword +'%' SELECT [sysjobs].[name] AS N'job_name',[sysjobsteps].[step_name],[sysjobsteps].[command] AS N'step_command',[sysjobsteps].[database_name],[sysjobsteps].[output_file_name],[sysjobsteps].[last_run_date] FROM [msdb].[dbo].[sysjobsteps]INNER JOIN [msdb].[dbo].[sysjobs]ON [msdb].[dbo].[sysjobsteps].[job_id] = [msdb].[dbo].[sysjobs].[job_id] where [sysjobsteps].[command] like @keyword

postgres cant open the log file

 

If you are PgAdmin tool and facing this error whenever the execution code encounters an error like below

To fix this.

Open PgAdmin
-- File – Options – Logging – set the path to the existing folder. Eg: /tmp/pgadmin.logxc

 

SQL Server AWS Migration BCP

stored procedure to generate BCP scritps to migrate the SQL Server database.
Developed this stored procedure on my labs to simulate the Migrating databases to AWS RDS.

Execute the output of the below procedure in CMD window.

Output :

creates Folders to store the output data

creates Folders to log the errors

BCP out Commands

BCP in Commands

Veirfy Errors : Generates Powershell Commands

/* ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 1) Create this sp on source Example : Exec  AWS_BCP_MIGRATION 'C:\BCP_DATA' , 'my_source_server', 'my_database', 'my_dest_server', 'my_dest_database', 'my_sa_password', 0 ------------ -- next run , truncate these tables manually. dont want to disturb. if there is any tables already exists in your environment TRUNCATE TABLE MSDB..AWS_IMPORT TRUNCATE TABLE MSDB..AWS_IMPORT ------------ BCP Parameters S -- server T -- trusted connection U - username P - password n - native values , existing values E - keep identity ( this is very important in migration) w - unicode t - column delimiter / field terminator b - batch size e - error log file "TABLOCK" - for performance */ --------------------------------------------------------------------------------------------------------------------------------------------------------------------- ALTER proc AWS_BCP_MIGRATION ( @RootFolder varchar(max) ,@SourceServer varchar(max)  = NULL ,@SourceDB varchar(max) = NULL ,@DestServer varchar(max) ,@DestDB varchar(max) ,@DEST_SQL_SA_PASSWORD VARCHAR(256) ,@EXP_IMP_EACH_TABLE BIT = 0 ) AS IF @SourceServer IS NULL SET @SourceServer = @@SERVERNAME IF @SourceDB IS NULL SET @SourceDB = DB_NAME() SET NOCOUNT ON DECLARE @BCP_DATA_FOLDER VARCHAR(MAX) DECLARE @BCP_EXPORT_ERROR_FOLDER VARCHAR(MAX) DECLARE @BCP_IMPORT_ERROR_FOLDER VARCHAR(MAX) DECLARE @BCP_EXPORT_Logging_FOLDER VARCHAR(MAX) DECLARE @BCP_IMPORT_Logging_FOLDER VARCHAR(MAX) ---------------------------------------------------------------------------------------------------------------------------------------------------------- IF @SourceServer = @DestServer AND @SourceDB = @DestDB BEGIN RAISERROR ('Source and Dest Connections Cant be same',18,1) return END set @RootFolder  = @RootFolder  +'_'++REPLACE(DB_NAME(),' ','_') DECLARE @BCP_COL_DELIMITER VARCHAR(10) SET @BCP_COL_DELIMITER = '[@*#%^|$' ---------------------------------------------------------------------------------------------------------------------------------------------------------- set @BCP_DATA_FOLDER = @RootFolder  +'\BCP_DATA' SET @BCP_EXPORT_ERROR_FOLDER = @RootFolder   +'\LOGS\EXPORT_ERRORS' SET @BCP_IMPORT_ERROR_FOLDER = @RootFolder   +'\LOGS\IMPORT_ERRORS' SET @BCP_EXPORT_Logging_FOLDER = @RootFolder   +'\LOGS\EXPORT_LOGGING' SET @BCP_IMPORT_Logging_FOLDER = @RootFolder   +'\LOGS\IMPORT_LOGGING' SELECT 'MKDIR '+@BCP_DATA_FOLDER union all SELECT 'MKDIR '+@BCP_EXPORT_ERROR_FOLDER union all SELECT 'MKDIR '+@BCP_IMPORT_ERROR_FOLDER union all SELECT 'MKDIR '+@BCP_EXPORT_Logging_FOLDER union all SELECT 'MKDIR '+@BCP_IMPORT_Logging_FOLDER union all SELECT '' union all SELECT 'ECHO FOLDERS CREATED..' union all SELECT '' IF @EXP_IMP_EACH_TABLE  = 1     BEGIN             select IDENTITY(int,1,1) as iid, ' bcp "select * from '+@SourceDB +'.['+schema_name(schema_id) +'].['+ name  +'] " queryout '+@BCP_DATA_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_')+'.txt -n -S '+@SourceServer+' -T -E -w -k -t'+@BCP_COL_DELIMITER+' -b 10000 -e'+@BCP_EXPORT_ERROR_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_') +'.TXT >> '+@BCP_EXPORT_Logging_FOLDER+'\'+REPLACE(NAME,' ','_')+'.TXT'             +CHAR(13) + ' bcp '+@DestDB+'.['+schema_name(schema_id) +'].['+ name  +'] in '+@BCP_DATA_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_')+'.txt -n -S '+@DestServer+' -Usa -P'+@DEST_SQL_SA_PASSWORD +'-h TABLOCK -E -w -k -t'+@BCP_COL_DELIMITER+' -b 10000 -e'+@BCP_IMPORT_ERROR_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_') +'.TXT >> '+@BCP_IMPORT_Logging_FOLDER+'\'+REPLACE(NAME,' ','_')+'.TXT '             as [ECHO EXPORT BEGIN...]             INTO MSDB..AWS_EXPORT             from sys.tables              SELECT 'ECHO Export & Import Completed'             --- to verify the errors             PRINT 'Powershell.exe -noexit -command "get-childitem '+@RootFolder+'\LOGS\'+'*.TXT -recurse | select-string -pattern ''error''" >> '+@RootFolder+'\'+@DestDB+'_'+'BCP_status.txt'             PRINT 'Powershell.exe -noexit -command "get-childitem '+@RootFolder+'\LOGS\'+'*.TXT -recurse | select-string -pattern ''#@ Row''" >> '+@RootFolder+'\'+@DestDB+'_'+'BCP_status.txt'     RETURN     END select IDENTITY(int,1,1) as iid, ' bcp "select * from '+@SourceDB +'.['+schema_name(schema_id) +'].['+ name  +'] " queryout '+@BCP_DATA_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_')+'.txt -n -S '+@SourceServer+' -T -E -w -k -t "'+@BCP_COL_DELIMITER+'" -b 10000 -e'+@BCP_EXPORT_ERROR_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_') +'.TXT >> '+@BCP_EXPORT_Logging_FOLDER+'\'+REPLACE(NAME,' ','_')+'.TXT' as [ECHO EXPORT BEGIN...] INTO MSDB..AWS_EXPORT from sys.tables  SELECT [ECHO EXPORT BEGIN...] FROM  MSDB..AWS_EXPORT ORDER BY IID ASC SELECT 'ECHO EXPORT COMPLETE' ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- select ' bcp '+@DestDB+'.['+schema_name(schema_id) +'].['+ name  +'] in '+@BCP_DATA_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_')+'.txt -n -S '+@DestServer+' -Usa -P'+@DEST_SQL_SA_PASSWORD +' -E -w -k -t "'+@BCP_COL_DELIMITER+'" -b 10000 -e'+@BCP_IMPORT_ERROR_FOLDER+'\'+schema_name(schema_id)+'_'+REPLACE(NAME,' ','_') +'.TXT >> '+@BCP_IMPORT_Logging_FOLDER+'\'+REPLACE(NAME,' ','_')+'.TXT "TABLOCK" ' as [ECHO IMPORT BEGIN..] ,IDENTITY(int,1,1) as iid into MSDB..AWS_IMPORT from sys.tables a SELECT [ECHO IMPORT BEGIN..] FROM MSDB..AWS_IMPORT ORDER BY IID ASC SELECT 'ECHO IMPORT COMPLETE' --get-childitem H:\BACKUP\AWS_BCP_DATA_RP_Regression\DATA\EXPORT_LOGGING\*.TXT -recurse | select-string -pattern "error" --- to verify the errors select  'Powershell.exe -noexit -command "get-childitem '+@RootFolder+'\LOGS\'+'*.TXT -recurse | select-string -pattern ''error''" >> '+@RootFolder+'\'+@DestDB+'_'+'BCP_status.txt' select 'Powershell.exe -noexit -command "get-childitem '+@RootFolder+'\LOGS\'+'*.TXT -recurse | select-string -pattern ''#@ Row''" >> '+@RootFolder+'\'+@DestDB+'_'+'BCP_status.txt'

AWS Performance Monitoring 2

 

 

EBS

]