Reset Database Files From Read-only To Read-write
Jan 18, 2008
I have two database files, one .mdf and one .ndf. The creator of these files has marked them readonly. I want to "attach" these files to a new database, but cannot do so because they are read-only. I get this message:
Server: Msg 3415, Level 16, State 2, Line 1
Database 'TestSprintLD2' is read-only or has read-only files and must be made writable before it can be upgraded.
What command(s) are needed to make these files read_write?
thanks
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Mar 24, 2015
How to identify whether the files are in read write or read only?
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Jan 12, 2012
i attached adventure works in sql server 2008 and it showing as read only ,make it read write or remove read only tag from database.
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Aug 26, 2015
I'm trying to do Sharepoint DR with Log Shipping and every thing configured except one thing which is switch the WSS_Content (Standby /Read-Only) DB to be ready and Write.
I tried from
GUI or ALTER DATABASE [WSS_Content] SET
READ_WRITE WITH NO_WAIT
but I received the below error:
Database WSS_Content is in Warm Standby
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Aug 15, 2014
Can a user of db owner role of a database change the databse option to read only and read-write?If not what permission I need to grant to the user?
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Sep 21, 2007
I'm contemplating a sql server archive strategy that rolls really old data off any sort of dbms and onto low cost media like dvds in a non relational archive format. I dont want to ever worry about these archives spanning different versions of sql when i go to retrieve a range of data that happens to span sql versions (eg one disc was sourced from 2005 another by 2008 but my report needs a union of both).
So I'm thinking about neutral/efficient formats for these archives and a live homegrown catalog that can determine exactly what disc(s) need to be mounted based on passed from and to date parameters...all so that the data that might span discs (and versions and maybe even schemas) can be merged and loaded into my sql version d'jour's "throw away" archive database for a one time report or other unplanned activity.
I remember raw data types being very convenient as an ETL format for our customers who have ssis, but wouldn't want our sqlexpress customers to be left without the archiving capability. Do the "things" that read and write raw data files really originate in some special T-SQL command that all sql editions can use, or is it strictly an ssis thing?
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Oct 6, 2015
How do I determine the read/write frequency on a database table? I am trying to do this on a 2012 and 2008 R2 servers.
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Aug 3, 2006
Hi to all DBAs,
I would like to ask if there will be a write and concurrency issue if i would create an online application with just one user connecting to the database, just like most open source php/mysql that can be downloaded
i.e
Setup 1. I will grant a single user that will connect to a database and will be set to a config.inc.php file and then create a table users (userid, username, password) and this table will be used for the application authentication and access control.
Setup 2. or is it much better to grant users that will connect to the database and have the table users for access control of the application?
to further illustrate my query:
Setup 1 would be:
###################Table: Users
user a@ipadd --> db1 --> userid mary --> myOnlineApp
user a@ipadd --> db1 --> userid john --> myOnlineApp
user a@ipadd --> db1 --> userid paul --> myOnlineApp
and Setup 2 would be:
#####################Table: Users
user mary@ipadd --> db1 --> userid mary --> myOnlineApp
user john@ipadd --> db1 --> userid john --> myOnlineApp
user paul@ipadd --> db1 --> userid paul --> myOnlineApp
will Setup 1 be enough if I will use SQL Server as database?
or Setup 2 is better user/database architecture?
This application will be online enrollment for a school with 16,000 students
very much appreciated for the feedbacks and suggestions
^_^x
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Jun 27, 2014
i have a database which get refreshed every day from client's data . and we need to pull heavy data from them every day as reports . so only selects happens on that database.
we do daily population of some table in some other databases from this daily refreshed DB.
will read uncommitted or NOLOCK with select queries to retrieve data faster.
there will be no dirty read as there are NO DML operation in that database so for SELECT which happens concurrently on these tables , will NOLOCK work?
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May 6, 2015
I have a requirement to
a. Read data from Different CSV files.
b. insert and update data to Data base in multiple table using joins.
This execution runs for 1-2 hours.I can use C# with Ado.net, but only concern I see is if in between execution fails due to some connection or other error. All insert data has to be cleaned up again.I feel writing and Store procedure inside transaction, which will take path's for CSV file as input and insert data in database. using transaction we will have flexibility rollback to original state.
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Apr 4, 2004
Pls help guys
I need to know whether its possible to read or write in to XML documents from SQLServer directly using stored procedures.
I basically need to created a number of XML documents on a nightly basis.,..........also i need to read a no of XML docs to SQLServer...
Is it wise to use stored procedures for this?
Or are there performance issues.........and do u suggest doing in in .NET
Your comments are appreciated..
Regards
Benny
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Apr 15, 2008
I have a query that runs for 10 sec on one database( A) and 5 min on another database(B) even though two database have identical scheam, tables, index and statistics..
I ran a profiler and got the below information
CPU READ Write
Database A: 92051 711956 8774
Database B: 91812 7621589 315822
A query runs on database has a significant larger read and write.. I don;t understand why this is happening? even though these two database have the same structure?? it has the same execution plan as well..
How can i solve this issue?
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Nov 17, 2011
Any easy way for a batch file or automated process to read from one db and table and what ever entry is missing out of another database + table it writes those missing entries to.
This is a simple table in one db that is filled with usernames, I want to see if there are missing usernames in another db and table and write those entries.
db1.usr_table.usr_name = jdoenew
If jdoenew is missing in the 2nd db I will need to write entries like:
db1.usr_table.usr_name = jdoenew
db1.usr_table.password = tmppassword
db1.usr_table.active = 1
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Oct 17, 2001
Hi, we're trying to read from a table and write back to the same table and are having a lot of trouble with blocking. What could we do to prevent our application from hanging due to blocking of this type?
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May 31, 2004
Hi ..
I want to Write in files or read from files
for example i have My_File.txt . i need a syntax and i want to call this syntax in my Store procedure and this syntax write forexample " Hello Word " in My_File.txt .
and i want another syntax that read from My_File.txt forexample "Word" from My_File.txt . what are those syntaxes do that ??
thanks
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Apr 21, 2006
Hello,
We currently run sql 2005 server and also sql express in our dev environments. We use sql express as an offline store (smart client). We have a similar/exact schema on the sql 2005 server and also the express.
We use the auto attach feature to connect to the express version of the database. Both the developer machines and the one that is running the sql 2005 server have exactly the same hardware configuration. The only difference may be that the server box is not running the VS.Net environment. The disk space etc is pretty much the same. Actually we run another database server(DB2) on the 2005 server machine.
We have observed that sql express is much slower and queries execute much slower aswell. For example, this may not be a totally scientific way of checking but a long running query on the server took only 2 minutes while on express it took longer than 9 minutes. The schema and data etc are the same.
Is there something we need to look into as far as read write speed/performance goes ?
TIA,
Avinash
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Aug 3, 2007
Hi,
I am using a Script Component and I have a Read/Write Variable varStatusCase (as assigned in the Custom Properties of my Script Component). I used this inside my script to get a specific value. However, when I ran it I get this error:
The collection of variables locked for read and write access is not available outside of PostExecute.
How do I repair this?
Thanks,
cherriesh
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Nov 20, 2007
Okay, maybe I'm getting ahead of myself.
Using SQL Server Express, VWD and .net 2.0 I've figured out how to drop a Table Column Constraint or Default Value/Binding and then Create it again using a stored procedure. What I can't figure out is how to retrieve that column's constraint value and write it to, say a label, in an aspx page, simply for reference. Is it possible? In this case the Data Type of the column is money.
I'm using it to perform a calculation to a column with a value that the user inserts into another column. (Column1(user input) minus Column2(with Default Value) = Column3(Difference). I just want to read Column2's Default Value for reference so I know whether to change it or not.
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May 28, 2008
Hi,
I was reading that many of these high traffic websites actually have 2 databases, 1 database is used ONLY for reads, while the other is for writes.
How does one go about creating such a setup? How does the database where writes are allowed replicated the data to the read only database server?
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Jul 23, 2005
Hi,I would like to use database locking mechanism to control access to anexternal resource (like file system).What I need is1. an exclusive (write) lock conflicting with any access to theresource (both for read and write)2. non-exlusive (read) lock conflicting with writes onlyHow this could be done?I'd appreciate any reply.Vadim
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Jan 29, 2008
Dear All,
I am looking for a sample code to do read/write operation on SQLCE 3.0 using VC++. For SQLCE 2.0 I have used ATL Consumer template and works well.
Thanks in Advance.
Param
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Aug 2, 2007
Hello Guys,
in SSIS I want to get a set of data and do some modifications on it before I insert it into the destinatipn. So far so good. Some of the modifications will include comparisions between two columns and if certain field is NULL then I want to get the value from the other one I was comparing to. When using conditional splits, I only get the rows to be redirected so that I can do whatever next. However, I want like use the variables as a storage so that I can put the value of one of the two columns in this variable which will be actually loaded into the destination finally. Any help?
Thanks
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Jun 25, 2007
I need to create a flat file as word document, may i know how to write text from stored procedure if a file is already exist then the text will append, how to do it ?
Thank you.
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Feb 6, 2008
I use excel as an interface to write query to retrieve data from a database in network drive. My problem is everyone can open and edit my query. Of course, the univeral database access user name and password will ask but everyone know this.
How can I put password to prevent any query modification?
Thanks
Daniel
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Jul 14, 2007
Is there a way to get the last read/write time of a table?
I want to have a few tables, but only allow them to exist if they have been used in the last 30 days. I want to set up a "purge" job to clear out any tables that have not been used in 30 days.
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Mar 28, 2004
Hi All,
I need some help from you experts.
I need to develop something that reads from xml files and writes in to sqlserver, also it should read from SQLServer and writes to xml.
I should be able to give this as a job to exectue daily ,etc.
Can we do this using stored procedures in SQLServer.
Pls paste some sample code, if any or direct me to any url with better info.
Thanks in advance
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Apr 10, 2008
Hello,
Any help here much appreciated.
I am using sql server 2000 to perform address cleansing. there is a point in my scripting when a table i pass values to becomes read/write.
i suspect this is when i run a cursor through the table.
Is anyone able to confirm for me whether running a cursor changes a table's properties?
Many thanks.
Tim
Ps as the table seems to be read/write it is harder to tell if NULLs are in the table and this is messing with joins I have further down the track.
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Nov 1, 2007
I want to write a variable say testVar in PostExecute of my script. I also want to read the same variable at the start of my script block.
How to specify this variable in the script transformation editor
ReadOnlyVariables = ????
WriteOnlyVariables = ???
If i just define
WriteOnlyVariables = testVar
will it work . I mean i cannot use testVar in both read & write
Any suggestions...
Thanks
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Jul 20, 2005
Hello,I'm relatively new to the database world so please forgive me inadvance for my ignorance. I have recently been tasked at my job withfinding a tool that will perform the following tasks: 1) extractschemas from a db, 2) produce a difference report between schemas fromtwo databases, and 3) synchronize two schemas. The purpose is forproduct upgrades during which an existing database schema will need tobe synchronized with a baseline schema.The tool must support the following database vendors (versions givenin parenthesis): Oracle (8i/9i), Sybase (12.x), Informix (9.x), MSS2000, and IBM DB2 (7/8).I have spent the last several days downloading and researching avariety of tools such as Aqua Data Studio, DbVisualizer, DBExplorer,DBDiff, and AdeptSQL. I thought it would be a good idea to post amessage to a few database newsgroups and ask for any recommendationsdatabase developers may have.So if anyone has any recommendations on such a tool or softwarepackage, I would greatly appreciate any information.Thanks!Chad Smith
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Jul 19, 2006
Any idea to copy a standby/readonly database. We a have a standby/readonly DB from logshipping for hot standby and we would like to make a copy of this standby/readonly DB into a read/write DB in the same server for daily testing. Thanks in advance!
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Nov 23, 2005
One of the packages we've created a while ago is now, suddenly, giving us a strange error:
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Oct 19, 2006
I was wondering if it is possible to read image data from a database in .net compact framework. Since cf does not have image.fromstream(memstream) to work with, I don't know how else to read the image from the database and then place it into a picturebox.
Here is the code I have been trying out:
Dim Img As Image
'
Dim conn As New SqlCeConnection("Data Source = My Documents est2.sdf")
conn.Open()
Dim sql As String = "SELECT * FROM Dater"
Dim cmd As New SqlCeCommand(sql, conn)
Dim reader As SqlCeDataReader = _
cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
While reader.Read()
TextBox1.Text = reader.Item("name")
Dim b(reader.GetBytes(1, 0, Nothing, 0, Integer.MaxValue) - 1) As Byte
reader.GetBytes(1, 0, b, 0, b.Length)
Dim ms As New System.IO.MemoryStream(b)
Dim bmp As New Bitmap(ms) <-Error: Value does not fall within expected range
Img = bmp
End While
PictureBox2.Image = Img
I get an error ,Value does not fall within expected range.
Does this mean the image was not save correctly in the database?
Thanks for any help
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Feb 6, 2007
Hi,I have a web app, that runs fine, except for one particular section that uses a class called by an event in the code behind. The class resides as a dll in the bin folder. We had no problems during testing, when only one user was running this dll. Problems soon occurred when multiple users tried running it. Here's the error & stack: 06/02/2007 09:25:26 ==> cburns ==> There is already an open DataReader associated with this Command which must be closed first. at System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) at System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command) at System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader() at ESP.Validator.Data.DatabaseEvents.DatabaseEventManager.Read(IEventable eventObject, Int16 eventType, DateTime earliestDate, DateTime latestDate) in C:My PathValidatorValidator.NETDataDatabaseEventsDatabaseEventManager.cs:line 92 at ESP.Validator.Data.Translink.CATCard.GetDespatchDate() in C:My PathProjectsValidatorValidator.NETDataTranslinkCATCard.cs:line 94 at ESP.Validator.Data.Translink.ExistingSchemeEntitlement.ReadCards() in C:My PathProjectsValidatorValidator.NETDataTranslinkExistingSchemeEntitlement.cs:line 215 at ESP.Validator.Data.Translink.ExistingSchemeEntitlement.Read() in C:My PathProjectsValidatorValidator.NETDataTranslinkExistingSchemeEntitlement.cs:line 147 at ESP.Validator.Data.Translink.TranslinkApplicant.ReadEntitlements() in C:My PathProjectsValidatorValidator.NETDataTranslinkTranslinkApplicant.cs:line 369 at ESP.Validator.Data.Translink.TranslinkApplicant.Read() in C:My PathProjectsValidatorValidator.NETDataTranslinkTranslinkApplicant.cs:line 353 at ESP.Validator.Data.Translink.PrePrintedLetter.Read() in C:My PathProjectsValidatorValidator.NETDataTranslinkPrePrintedLetter.cs:line 282 at ESP.Validator.ValidationProcessor.Read(ValidationSubject subject) in C:My PathProjectsValidatorValidator.NETValidationProcessor.cs:line 82 at clear_applications_scan_applications.ProcessValidation() It seems the data reader is getting reused. We have ensured after each read the reader is closed. Though all users are using the same connection string. Could it be a connection pool problem, with the connection being overwritten during execution? Should i edit it according to the users logon?I am really at a loss for ideas, and I don't mind admitting I am a bit out of my depth with this one!! Any ideas/suggestions would be greatly appreciated. Thanks
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