Expected Performance Of An Oracle Datasource For 10 Mlns Rows?

Feb 4, 2008

Hi all,

I have been reading some topics on "slow Oracle connections", but I have not found an answer for my question yet.

The problem is that I am extracting data from a Oracle database to Raw files (to import into our DWH later on).
For one table this takes more that 1 hour! I find this to be very slow, but maybe I am expecting too much speed?

Can anyone tell me how long it should take to download 10 million rows from Oracle to Raw file (no transformations)?

Some extra information:
- The table has 10 million rows and a little over 200 columns
- The datatypes in the Oracle database are varchar, number and date
- I tried to tune the buffer size in the data flow and found that I could fit about 1900 rows in a DefaultBuffersize of 100 MB
- I use the "Native OLE DBMicrosoft OLE OB Provider for Oracle" (Provider=MSDAORA.1)

Can I do anything to get a better performance or is 1 hour for a table like this the best performance we can get?

(Changing the Oracle database is unfortunately not an option...)

Thanks and regards,

Ellen

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What Would Be The Expected Performance Of SQL 2005

Oct 25, 2007

Greetings.

What do I now have:
A directory with Access Databases; around 20 databases, all dinamicly created;
Each Database has on average 300 tables inside, all equally structured, all created by software;
Each table has two DateTime fields, 4 double fields and 4 long int fields;
Each table has around 10000 records, average.

The Directory is shared in a Windows 2003 Enterprise server.
Around 20 users access the databases simultaneously, adding, retrieving and deleting data, over 100MBits LAN.

Here's the catch:
As fast as possible, the program needs to retrieve 1 single record matching a single date from a given table in a given database. All databases work together. It needs to gets litterally thousands of individual records in order to work properly. Per user. That means thousands of requests, but not much data in each request. That's its core job.
A small percentage of request write the record back , that is, update it. Maybe 2% of requests.

If I were to reproduce this situation in a SQL server 2005, what would be the expected time for lets say 50000 requests ?
Or should I stick to Access ?

Thanks,,
Any response will be apreciated.

Pedro Ramos

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Dec 15, 2007

I am new to SQL Reporting services and learning from website tutorials. I could easily connect to Adventure Works database and could create some reports. Now I want to create one report from Oracle database in my network on one of my server (Network computer). I could not connect to database as do not know what to write (is path like Server name or IP address 152.168.1.25 Oracle database name) is required in Server name field? Server Type should be OLE DB or Oracle and OLEDB Provider should be Microsoft OLE DB Provider for Oracle? Then Server of filename?
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Jan 22, 2007

Everything I have read says that this is possible in Oracle 9 and greater versions, but I can't get it to work...

Here is my query:

select * from employee where employee_id in ('111','222')

This works fine in the data tab until I replace the values with a parameter. I get the pop-up to enter the parameter values but no matter how I enter them, I don't get any rows returned. I've tried entering them as '111','222' and as 111,222 and changing the parameter type from a string to an int, but nothing seems to work.

I am running this on SQL Server RS 2005 and my Oracle driver (Oracle in OraHome92) is version 9.02.

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Nov 29, 2006

Now this is the first time i have tried this with SQL 05 I am trying to Import data from an Oracle DB. I have the connection info:

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)

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The username and password I have also. I tried to enter in the Xtx20xxx as the server name, clicked "Properties"

put in the username and password I can given and clicked "Test Connection". No matter what I get the infamous ORA-12154: TNS:could not resolve service name error message. I am sure I am missing something obvious here but I have absolutely no clue and all the googling in the world has not given me any help. I do have the Oracle 10g client tools installed on this workstation (running Windows XP Prof SP2 and SQL 2005 STD).

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Nov 18, 2006

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An error has occurred during report processing. (rsProcessingAborted)
Cannot create a connection to data source 'oracle'. (rsErrorOpeningConnection)
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Oct 17, 2007

Hello,

I have to develop a package to get some data from a 10g Oracle database and load it to a SQL Server 2005 database.

In my design I used Oracle Provider for OledDB as my source provider following Microsoft recommendations found here : http://msdn2.microsoft.com/en-us/library/bb332055.aspx

As I have to use a parametrized query against my Oracle database I create a variable with my query that I override at runtime with a script task to update the parameters values.

One of the return column is of numeric datatype.

To handle this known issue with Oracle sources I edited through the advanced editor my Oledb source component to manually correct the precision.

Everything works fine with one of my package.

So I repeat the whole process while designing an other one with the same purposes.

As for the previous one I first unit test every components and everything works. But when running the full package it raised an error code 0x80004005 Error while validating post executing phase of the component (sorry for the poor translation from french to english ...)

I open my dataflow where the component is and found no warnings or errors. I edited through the advanced editor my Oledb source component and found that there's an error on the precision scale of the numeric return column. The message warn me that the precision must be between 1 and 38.
I checked this column and in the "OLE DB Source output / External Columns" the precision is 0 though I previously manually corrected it.
I upadted again for a 18 precision as it is for this column in "OLE DB Source output / Output Columns".
But it never keeps my changes ......

I delete the component and recreate it to force the metadata to be updated but always the same thing, the precision scale for this column in the "OLE DB Source output / External Columns" never keeps my 18 value.

Does someone have any clues to help me ?

Thanks a lot.

Bertrand

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Hi,

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Any tips or suggestion to increase the speed will be appreciate

Thank

Martin

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Attention: To all SSIS gods like Donald Farmer, Jamie Thompson, Michael Entin

I am so very disappointed with the performance of SSIS on Oracle. When I am doing a simple lookup, it is caching the entire lookup table that is killing my performance. What is worst? When I try to change from Full to Partial or None caching mode, the component throws an error (x) sign.

I am also so frustrated with the way I have warnings all over the place. The warnings are saying code page value for the column cannot be determined. But the code page value is defaulted to 1252. I looked around everywhere to find what the damn code page value of my Oracle database is without any luck.

The damn package that I created takes 10 minutes to process 10,000 records ONLY which is slower than a legacy Cognos Decision Stream!!! Unacceptable!!! My lookup tables on an average have 200,000 records and I DO NOT WANT TO CACHE THEM all for 10,000 records. Something seems messed up!!!

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Nov 22, 2007

We have Oracle-based enterprise resource planning (ERP) application that facilitates order entry, invoicing, dispatch, stock management, and purchasing. However, it took as much as 30 seconds to perform queries from the remote offices, which were linked via Frame Relay.

Any experiences or ideas shared will be greatly appreciated.

Best,

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Apr 16, 2007

I am currently querying two databases - One in SQL Server and one Oracle, to find records which are in one but not the other (essentially a reconcilliation) this is working fine in MS Access, using 2 passthrough queries to return the results of the 2 databases, then another query to find the data in one but not the other.

I decided to try the linked server approach as I thought this would give me enhanced performance - but strangely enough when I query the oracle database from MS Access the query takes about 22 seconds - whereas when I query the linked server from SQL Server the same query takes about 55 seconds.

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Feb 20, 2004

I was told in one of my systems classes that the real performance bottleneck in accessing information from the database was the opening of a connection from the application to the database.

To combat that problem I was advised to use a Singleton Factory pattern and to have that Factory instaniate a connection and open it, then pass references to that connection for all of the objects that it created. All of those objects passed the connection reference to the objects they created and so on. Basically that meant that I only ever had one connection open at any one time for my entire application. And I was able to implement this solution at my previous job where I was developing in Oracle. I primarially used OracleCommands and OracleDataReaders to get the informaton into and out of the database. I thought this was a very nice solution. Having this many DataReaders accessing a single connection was not a problem because OracleConnections don't get locked from having more than one DataReader open at once.

At my current job, however, I use SQL Server. I am concerned that the single connection will not work in my new enviroment as the SQLDataReaders lock up the connection while they are using it. If the information that I recieved about opening connections being the real bottleneck, then I am hesitant to have a connection instanciated and opened for each method, but I am concerned that a whole lot of errors will be generated if I use the single connection method. Also, how do DataAdapters effect my decision of which approach to use.

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Jun 8, 2008

Is there a way to access a particular row of a column in sql

lets say we have a table

A | B| C|
---------
1 | 2 | 3
3 | 5 | 6

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Nov 18, 2007

hi everyone ,How are you all?
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regards,
Firas azzi

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Hi,

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Jun 18, 2008

hi,

I came across the following topic which speaks about inserting multiple rows into a table.

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=52980

The following is the code it concludes:
----------------------------------------------------------
INSERT INTO InstitutionManagement.dbo.b10_partC
(unitid, repyear, test, subject_area, scores,
credit_awarded, comments, recno)
select
unitid = 'data1a',
repyear = 'data1b',
test = 'data1c',
subject_area = 'data1d',
scores = 'data1e',
credit_awarded = 'data1f',
comments = 'data1g',
recno = 'data1h'
union all
select
unitid = 'data2a',
repyear = 'data2b',
test = 'data2c',
subject_area = 'data2d',
scores = 'data2e',
credit_awarded = 'data2f',
comments = 'data2g',
recno = 'data2h'
union all
select
unitid = 'data3a',
repyear = 'data3b',
test = 'data3c',
subject_area = 'data3d',
scores = 'data3e',
credit_awarded = 'data3f',
comments = 'data3g',
recno = 'data3h'
... And so on...
----------------------------------------------------------

My question is based on the performance of the above insert statement aganist Microsoft.Net SqlBulkCopy Class.

One more thing: Does the above statement gets executed as asingle statement or as multiple statements (One execution for each Select statement).

thanks

regards,
vinay

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Aug 11, 2006

I apologize since this seems to be a fundamental question, but I did try to search and there seems to be something wrong - after clicking on the "search" button, the page just will not update... I even tried "advanced search" but no luck there, either.

Anyway, my question is about writing multiple data rows to tables in a SQL Server database. Currently I'm using embedded SQL from a VC++ 2005 .Net program to write data to a SQL 2005 Express server (either on the same PC or on another, via TCP). As data becomes available, I issue INSERT statements, one by one. One row is about a dozen columns, typically 8 bytes each, for each of the few tables in the database. In most cases, I have several rows of data available at the same time. Those rows come at the rate of around 200-1000 per second for the different tables. With that setup, my SQL server is not able to keep up - the data ends up getting buffered in the program, waiting for the server, the server process uses just about all the CPU cycles it can get, etc.

I'm reading the "SQL in a nutshell" book from O'Reilly but it's mostly language oriented, it doesn't say much about performance improvements. It would seem natural that one could improve the performance. For example, when I do a SELECT query, the data comes very quickly, which makes me think that it is the overhead of making those individual calls with small amount of data. I would think that I should be able to request that multiple rows are written at the same time with a single SQL statement, and that this would improve the performance. However, I have no idea how to do that.

I did try one thing - enlisting the sequence of INSERTs into a single transaction, thinking it will all get buffered and only get written to the server after the Commit command is issued. I did that but it doesn't seem to help. What should I try to alleviate this problem? One thing to consider: although I use SQL Server for testing, I am trying to keep compatibility with other databases, e.g., ODBC to any available data source, including MS Access over Jet. I would love it if the solution to this were compatible (i.e., not involve any Transact SQL or other vendor-specific tricks).
I thank you in advance for your assistance!

Kamen

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Need help, I am managing a Data Warehouse (80 G.B Database Size), I purge older than 6 months data from a table which has more than 140 Million rows on daily basis. The daily data load performance is degrading. The table has no clustered indexes (only non-clustered indexes).

Tried dropping and rebuilding the non-clustered indexes, didn't work.

One way to solve the problem is drop the non-clustered index, bcp out the data, truncate the table and bcp in the data and rebuild the non-clustered indexes. This is too risky and taking 14 hours to bcp out the data.

This was not the issue in SQL Server 6.5, because SQL 6.5 always insert new record indexes at the end of the heap link (heap = non-clustered indexes without clustered index). In contrast, SQL Server 7.0 first checks for available space in existing pages by using percent free space pages (this is where it is killing the performance ).

Thanks for your help!

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Mar 6, 2008

I built an SSIS package to pull a large amount data (over 4 million records) from our legacy system into a SQL server for analysis. As it stands the package takes somethign like 30+ hours to run. I would really like to trim down the time it is taking. The process runs monthly.

We're connecting to a cache database via an ODBC connection and dumping to an OLEDB connection to the SQL server. Is there something I can change in the rows per batch, maximum commit size to improve performance. It looks like the ODBC connection returns chunks of about 3000 rows at a time.

Is anyone familiar with cache that might know where I can get the best performing ODBC driver from?

What about the table that I'm dumping the data to? I assume no (or very few) indexes is the way to go for speed of dropping the data into the table.

I don't feel that 30 hours is an acceptable amount of time for this process to run. Am I off base here?

Any tips would be appreciated.

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For Deleting Duplicate Rows Subquery Or Cueser Is Better In Performance????????????

Sep 26, 2006

For deleting duplicate rows, i can use cursor and subquery.

cursor code

Declare dup_cursor cursor for
select acctnumber from LinkUrnABSADMBAR
group by acctnumber
having count(*) > 1

Open dup_cursor

Fetch Next from dup_cursor INTO @acctnumber

While (@@Fetch_Status = 0)
Begin

Delete from LinkUrnABSADMBAR
where acctnumber = @acctnumber

Fetch Next from dup_cursor INTO @acctnumber
End

Close dup_cursor
Deallocate dup_cursor

Subquery code

delete from galupload2000..test where id in (select id from galupload2000..test group by id having count(*) >1)

My question is which one is Better in performance????????????

Thanks

Sandipan

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Insert Rows With SQLServerce V3.5 Is Very Slow Can Anyone Help Insert Performance Poor

Feb 22, 2008

Hi All

I decided to change over from Microsoft Access Database file to the New SQLServerCe Compact edition. Although the reading of data from the database is greatly improved, the inserting of the new rows is extremely slow.

I was getting between 60 to 70 rows per sec using OLEDB and an Access Database but now only getting 14 to 27 rows per sec using SQLServerCe.

I have tried the below code changes and nothing seams to increase the speed, any help as I would prefer to use SQLServerCe as the database is much smaller and I��m use to SQL Commands.

Details:
VB2008 Pro
.NET Frameworks 2.0
SQL Compact Edition V3.5
Encryption = Engine Default
Database Size = 128Mb (But needs to be changes to 999Mbs)

Where Backup_On_Next_Run, OverWriteQuick, CompressAns are Booleans, all other column sizes are nvarchar and size 10 to 30 expect for Full Folder Address size 260

TRY1

Direct Insert Using Data Adapter.

Me.BackupDatabaseTableAdapter1.Insert(Group_Name1, Full_Folder_Address1, File1, File_Size_KB1, Schedule_To_Run1, Backup_Time1, Last_Run1, Result1, Last_Modfied1, Last_Modfied1, Backup_On_Next_Run1, Total_Backup_Times1, Server_File_Number1, Server_Number1, File_Break_Down1, No_Of_Servers1, Full_File_Address1, OverWriteQuick, CompressAns)

14 to 20 rows per second (Was 60 to 70 when using OLEDB Access)

TRY 2

Using Record Sets

Private Sub InsertRecordsIntoSQLServerce(ByVal Group_Name1 As String, ByVal Full_Folder_Address1 As String, ByVal File1 As String, ByVal File_Size_KB1 As String, ByVal Schedule_To_Run1 As String, ByVal Backup_Time1 As String, ByVal Last_Run1 As String, ByVal Result1 As String, ByVal Last_Modfied1 As String, ByVal Latest_Modfied1 As String, ByVal Backup_On_Next_Run1 As Boolean, ByVal Total_Backup_Times1 As String, ByVal Server_File_Number1 As String, ByVal Server_Number1 As String, ByVal File_Break_Down1 As String, ByVal No_Of_Servers1 As String, ByVal Full_File_Address1 As String, ByVal OverWriteQuick As Boolean, ByVal CompressAns As Boolean)

Dim conn As SqlCeConnection = Nothing
Dim CommandText1 As String = "INSERT INTO BackupDatabase (Group_Name, Full_Full_Folder_Adress, File1,File_Size_KB, Schedule_To_Run, Backup_Time, Last_Run, Result, Last_Modfied, Latest_Modfied, Backup_On_Next_Run, Total_Backup_Times, Server_File_Number, Server_Number, File_Break_Down, No_Of_Servers, Full_File_Address, OverWrite, Compressed) VALUES ('" & Group_Name1 & "', '" & Full_Folder_Address1 & "', '" & File1 & "', '" & File_Size_KB1 & "', '" & Schedule_To_Run1 & "', '" & Backup_Time1 & "', '" & Last_Run1 & "', '" & Result1 & "', '" & Last_Modfied1 & "', '" & Latest_Modfied1 & "', '" & CStr(Backup_On_Next_Run1) & "', '" & Total_Backup_Times1 & "', '" & Server_File_Number1 & "', '" & Server_Number1 & "', '" & File_Break_Down1 & "', '" & No_Of_Servers1 & "', '" & Full_File_Address1 & "', '" & CStr(OverWriteQuick) & "', '" & CStr(CompressAns) & "')"
Try
conn = New SqlCeConnection(strConn)
conn.Open()

Dim cmd As SqlCeCommand = conn.CreateCommand()

cmd.CommandText = "SELECT * FROM BackupDatabase"
cmd.ExecuteNonQuery()
Dim rs As SqlCeResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable Or ResultSetOptions.Scrollable)

Dim rec As SqlCeUpdatableRecord = rs.CreateRecord()

rec.SetString(1, Group_Name1)
rec.SetString(2, Full_Folder_Address1)
rec.SetString(3, File1)
rec.SetSqlString(4, File_Size_KB1)
rec.SetSqlString(5, Schedule_To_Run1)
rec.SetSqlString(6, Backup_Time1)
rec.SetSqlString(7, Last_Run1)
rec.SetSqlString(8, Result1)
rec.SetSqlString(9, Last_Modfied1)
rec.SetSqlString(10, Latest_Modfied1)
rec.SetSqlBoolean(11, Backup_On_Next_Run1)
rec.SetSqlString(12, Total_Backup_Times1)
rec.SetSqlString(13, Server_File_Number1)
rec.SetSqlString(14, Server_Number1)
rec.SetSqlString(15, File_Break_Down1)
rec.SetSqlString(16, No_Of_Servers1)
rec.SetSqlString(17, Full_File_Address1)
rec.SetSqlBoolean(18, OverWriteQuick)
rec.SetSqlBoolean(19, CompressAns)
rs.Insert(rec)
Catch e As Exception
MessageBox.Show(e.Message)
Finally
conn.Close()
End Try
End Sub

��20 to 24 rows per sec

TRY 3

Using SQL Commands Direct

Private Sub InsertRecordsIntoSQLServerce(ByVal Group_Name1 As String, ByVal Full_Folder_Address1 As String, ByVal File1 As String, ByVal File_Size_KB1 As String, ByVal Schedule_To_Run1 As String, ByVal Backup_Time1 As String, ByVal Last_Run1 As String, ByVal Result1 As String, ByVal Last_Modfied1 As String, ByVal Latest_Modfied1 As String, ByVal Backup_On_Next_Run1 As Boolean, ByVal Total_Backup_Times1 As String, ByVal Server_File_Number1 As String, ByVal Server_Number1 As String, ByVal File_Break_Down1 As String, ByVal No_Of_Servers1 As String, ByVal Full_File_Address1 As String, ByVal OverWriteQuick As Boolean, ByVal CompressAns As Boolean)

Dim conn As SqlCeConnection = Nothing
Dim CommandText1 As String = "INSERT INTO BackupDatabase (Group_Name, Full_Full_Folder_Adress, File1,File_Size_KB, Schedule_To_Run, Backup_Time, Last_Run, Result, Last_Modfied, Latest_Modfied, Backup_On_Next_Run, Total_Backup_Times, Server_File_Number, Server_Number, File_Break_Down, No_Of_Servers, Full_File_Address, OverWrite, Compressed) VALUES ('" & Group_Name1 & "', '" & Full_Folder_Address1 & "', '" & File1 & "', '" & File_Size_KB1 & "', '" & Schedule_To_Run1 & "', '" & Backup_Time1 & "', '" & Last_Run1 & "', '" & Result1 & "', '" & Last_Modfied1 & "', '" & Latest_Modfied1 & "', '" & CStr(Backup_On_Next_Run1) & "', '" & Total_Backup_Times1 & "', '" & Server_File_Number1 & "', '" & Server_Number1 & "', '" & File_Break_Down1 & "', '" & No_Of_Servers1 & "', '" & Full_File_Address1 & "', '" & CStr(OverWriteQuick) & "', '" & CStr(CompressAns) & "')"

Try
conn = New SqlCeConnection(strConn)
conn.Open()

Dim cmd As SqlCeCommand = conn.CreateCommand()
cmd.CommandText = CommandText1
'cmd.CommandText = "INSERT INTO BackupDatabase (��"
cmd.ExecuteNonQuery()

Catch e As Exception
MessageBox.Show(e.Message)
Finally
conn.Close()
End Try
End Sub

�� 25 to 30 but mostly holds around 27 rows per sec I

Is this the best you can get or is there a better way. Any help would be greatly appericated

Kind Regards

John Galvin

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Aug 17, 2004

Hi,
I'm trying to set the value of the variable @prvYearMonth thru this sp. In the query analyzer I execute the following code to the see the results of my 'CabsSchedule_GetPrevYearMonth' SP, but the only see "The Command(s) completed successfully in the result. What am I missing??

Thanks in advance

CREATE PROCEDURE CabsSchedule_GetPrevYearMonth
(
@prvYearMonth int OUTPUT
)

AS
BEGIN
SET @prvYearMonth = (SELECT MAX(YearMonth) FROM CabsSchedule)
END
GO

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Jul 1, 2004

I have the following

SELECT @cLastBarcode
SELECT @tmpCount = RIGHT(@cLastBarcode, 4)
SELECT @tmpCount

SELECT @cLastBarcode returns '14001DT0010006'

BUT

SELECT @tmpCount returns nothing. The RIGHT(....) function does not render any results. I am expecting '0006'.

I read that the data type must be compatible with varchar. The @cLastBarcode was declare as char(25). I have even tried casting the @cLastBarcode char string to type varchar.

Any hints?

Mike B

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Dec 31, 2007

I did a trace on a production DB for many hours, and got more than 7 million of "RPC:Completed" and "SQL:BatchCompleted" trace records. Then I grouped them and obtained only 545 different events (just EXECs and SELECTs), and save them into a new workload file.

To test the workload file, I run DTA just for 30 minutes over a restored database on a test server, and got the following:
Date 28-12-2007
Time 18:29:31
Server SQL2K5
Database(s) to tune [DBProd]
Workload file C:Tempfiltered.trc
Maximum tuning time 31 Minutes
Time taken for tuning 31 Minutes
Expected percentage improvement 20.52
Maximum space for recommendation (MB) 12874
Space used currently (MB) 7534
Space used by recommendation (MB) 8116
Number of events in workload 545
Number of events tuned 80
Number of statements tuned 145
Percent SELECT statements in the tuned set 77
Percent INSERT statements in the tuned set 13
Percent UPDATE statements in the tuned set 8
Number of indexes recommended to be created 15
Number of statistics recommended to be created 50
Please note that only 80 of the 545 events were tuned and 20% of improvement is expected if 15 indexes and 50 statistics are created.

Then, I run the same analysis for an unlimited amount of time... After the whole weekend, DTA was still running and I had to stop it. The result was:
Date 31-12-2007
Time 10:03:09
Server SQL2K5
Database(s) to tune [DBProd]
Workload file C:Tempfiltered.trc
Maximum tuning time Unlimited
Time taken for tuning 2 Days 13 Hours 44 Minutes
Expected percentage improvement 0.00
Maximum space for recommendation (MB) 12874
Space used currently (MB) 7534
Space used by recommendation (MB) 7534
Number of events in workload 545
Number of events tuned 545
Number of statements tuned 1064
Percent SELECT statements in the tuned set 71
Percent INSERT statements in the tuned set 21
Percent DELETE statements in the tuned set 1
Percent UPDATE statements in the tuned set 5
This time DTA processed all the events, but no improvement is expected! Neither indexes/statistics creation recomendation.

It does not seem that Tuning Advisor crashed... Usage reports are fine and make sense to me.

What's happening here? It looks like DTA applied the recomendations and iterated, but no new objects where found in DB.

I guess that recomendations from the first try with only 80 events were invalidated by the remaining from the long run.

I couldn't google an answer for this. Help!!!

Thanks in advance.

++Vitoco

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SQL CLR Udf Returns 0 Instead Of Expected Value

Dec 12, 2007

My first foray into the SQL CLR world is a simple function to return the size of a specified file.
I created the function in VS2005, where it works as expected.
Running the function in SSMS, however, returns a value of zero, regardless of the file it is pointed at.

Here's the class member code:

Public Shared Function GetFileSize(ByVal strTargetFolder As String, ByVal strTargetFile As String) As Long

' Returns the size of the specified file.

' Parameters: strTargetFolder = path to target file, strTargetFile = target file name.

Dim lngFileSize As Long

Dim objFileInfo As FileInfo

' Confirm file exists.

If Not File.Exists(strTargetFolder & "" & strTargetFile) Then

Return -1

End If

Try

objFileInfo = My.Computer.FileSystem.GetFileInfo(strTargetFolder & "" & strTargetFile)

lngFileSize = objFileInfo.Length

Catch

' TODO: add error handling; system folders cause error during processed.

End Try

Return lngFileSize

End Function

In SSMS (sp2), here's my assembly steps (this is my local dev machine; I have admin rights):

sp_configure 'clr enabled', 1

GO

RECONFIGURE

GO

-- For file system access, set the database TRUSTWORTHY property.

ALTER DATABASE dba_use

SET TRUSTWORTHY ON

CREATE ASSEMBLY GetFolderInfo

FROM 'C:ProjectsGetFolderInfoGetFolderInfoinDebugGetFolderInfo.dll'

WITH PERMISSION_SET = UNSAFE

Here's the udf declaration:

CREATE FUNCTION dbo.udfGetFileSize( @strTargetFolder nvarchar(200), @strTargetFile nvarchar(50) )

RETURNS bigint

AS EXTERNAL NAME

GetFolderInfo.[GetFolderInfo.clsFolderInfo].GetFileSize

And the function call - note the target file is on a remote server. Actual file name differs slightly:

SELECT dbo.udfGetFileSize('\SomeServerName$MSSQL2000MSSQLData', 'SomeDBName_Data.MDF')

This always returns zero with no error displayed. Running Profiler was little help and there's not much in the Event Log.
The function returns correct values in VS2005.
The assembly is created with UNSAFE because using EXTERNAL_ACCESS resulted in a security error that prevented the assembly from being created, let alone running. Security is, I suspect, at the root of this issue as well, but I'm not sure what or where to look to verify this.

Any assistance is greatly appreciated.

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Is This Expected Behavior?

Aug 8, 2007

I posted this at the asp.net forums but somone suggested I post it here. So:

Try this in sql server:

select COALESCE(a1, char(254)) as c1 from

(select 'Z' as a1 union select 'Ya' as a1 union select 'Y' as a1 union select 'W' as a1) as b1

group by a1

with rollup order by c1

select COALESCE(a1, char(255)) as c1 from

(select 'Z' as a1 union select 'Ya' as a1 union select 'Y' as a1 union select 'W' as a1) as b1

group by a1

with rollup order by c1

The only difference is that the first one uses 254 and the second one uses 255. The first sorts like this:

W
Y
Ya
Z
þ

The second one sorts like this:

W
Y
ÿ
Ya
Z

Is this expected behavior?

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Feb 17, 2005

Hi All,
I am kindly seeking for help.
I have a table(MyTable) which is defined as (date datetime, ID char (10), and R, P,M,D&Y are all float) and the layout is as following:
Date ID R P M D... Y
1/1/90 A 1 2 3 4... 5
1/2/90 A 2 3 4 5... 1
...
2/11/05 A 3 4 5 6... 2
1/1/90 B 1 2 3 4... 5
1/2/90 B 2 3 4 5... 1
...
2/11/05 B 3 4 5 6... 2
...
The expected query results look like: ( this results from Date, ID and R fields)
Date A B
1/1/90 1 1
1/2/90 2 2
...
2/11/05 3 3

The SQL I wrote:
select date, ID,
A=sum(case when ID=A then R else 0 end),
B=sum(case when id=B then R else 0 end)
from MyTable
Group by date

I would also like to get another set of results with the same format but from date,ID and P fields:
Date A B
1/1/90 2 2
1/2/90 3 3
...
2/11/05 4 4

select date, ID,
A=sum(case when ID=A then P else 0 end),
B=sum(case when id=B then P else 0 end)
from MyTable
Group by date

The problem with that is if I have thousands of ID in MyTable I have to "hard code" thousands times and the same problem with the fields/columns. Is there any easier way to do this?
I also would like to insert the results into a table/view which will be refreshed whenever MyTable gets updated.

Any suggestion/comments are highly appreciated!
shiparsons

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Sproc Not Executing As Expected

Oct 24, 2005

I use the following sproc to populate a table that is used as the base recordset for a report.

For some reason, when the sproc is run from a scheduled job, it doesn't repopulate the table. It does, however, truncate the table. If I run it manually from query analyzer, it works fine.

I've checked all the permissions on all the object touched by the sproc, and everything looks right there. Is there another problem I should be looking for?

SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS OFF
GO

setuser N'mcorron'
GO

CREATE PROCEDURE mcorron.CreateDiscOrders
AS
/*
Creates table for Orders with disc items Actuate report
*/
SET NOCOUNT ON
SET ANSI_WARNINGS OFF

TRUNCATE TABLE dbo.rptDiscOrders

INSERT INTO dbo.rptDiscOrders
SELECT *
FROM (SELECT ORD.product as prod_XREF, ORD.ORDER_NUMB, ORD.CustName, ord.units as ordunits, INV.Product,
INV.Units
FROM (SELECT TOP 100 PERCENT f.PARENT_SITE, f.SITE, dbo.vwCustBillTo.CustName, o.ORDER_NUMB, p.Prod_Xref, o.PRODUCT,
o.ORDER_TONS * 2000 / m.part_wt AS UNITS
FROM dbo.Lawn_Orders o INNER JOIN
dbo.PRODUCT_XREF p ON o.PRODUCT = p.Product INNER JOIN
dbo.FACILITY_MASTER f ON o.WHSE = f.SITE INNER JOIN
dbo.Lawn_PartMstr m ON o.PRODUCT = m.part_code INNER JOIN
dbo.vwCustBillTo ON o.BILLTO = dbo.vwCustBillTo.BillToNum
WHERE (o.SHIP_DATE < DATEADD(d, 30, GETDATE())) and prod_xref not like 'dead%') ORD INNER JOIN
(SELECT f.PARENT_SITE, x.Prod_Xref, i. Product, SUM(i.Qty) AS Units
FROM dbo.Lawn_Inventory i INNER JOIN
dbo.FACILITY_MASTER f ON i.Whse = f.SITE INNER JOIN
dbo.PRODUCT_XREF x ON i. Product = x. Product
WHERE (f.WHSE_TYPE = 'ship')
GROUP BY f.PARENT_SITE, x.Prod_Xref, i. Product) INV ON ORD.PARENT_SITE = INV.PARENT_SITE AND ORD.Prod_Xref = INV.Prod_Xref)
ordinv
WHERE (Prod_Xref <> Product)
GO
setuser
GO

SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO

Thanks

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Encrypt Not Working As Expected

Oct 18, 2007

Do you see anything wrong with this? The first select works and finds rows the second one does not. I have opened the Key since the first query does find rows.

select *

from [dbo].[dmTable]

WHERE cast(decryptByKey(field) as varchar(50)) = 'Value'

select *

from [dbo].[dmTable]

where field = EncryptByKey(Key_GUID('CLTCadminKey'),'Value')

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