DB Engine :: Snapshots Remains In Database After Last CheckDB
Sep 5, 2015
Our last CheckDB failed on the 02/09. We were having problems with our SAN then and that got sorted out. The databases that it failed still has the snapshot showing in SQL Management Studio, screenshot exemple below (server name blanked out)
I reran CheckDB on the 04/09 on all the databases and the same databases that failed on the 02/09 failed again. I noticed in the log file, it tried to use the same snapshot file created on  02/09 to run CheckBD
I ran CheckDB manually on the databases that failed "DBCC CheckDB (WSS_Content_ce) with all_errormsgs"Â and did not get any errors back.Â
How do I remove the snapshot databases? We had a problem on 02/09 so the snapshot copy obvisouly has problems. I'd like to remove these snapshots and rerun a CheckDB on all the databases to ensure all is ok.
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Feb 23, 2007
SP2 refuses to install for the Database Engine because €œthe previous upgrade did not complete€?, i.e. it detects a suspended installation. The same thing happened to me when I installed SP1. I then remember opening the maintenance dialog and completing the setup, after which SP1 installed just fine.
When I try to do the same thing this time, I€™m presented with the €?complete the suspended installation€? option, which when I run it reports the installation completed successfully. However, in reality the installation still remains in suspended mode for whatever reason. If I reboot and open the maintenance dialog, I€™m still presented with the €?complete the suspended installation€? option. I€™ve even tried to run it more than once, but it doesn€™t help. Needless to say, SP2 still refuses to install.
I don't know why the installation is in a suspended state. I know every part of SP1 installed successfully in the end, and the computer never crashed during the installation. I've been using it every day since then, without any problems. All other parts of SP2 did install successfully.
I created a feedback entry on Microsoft Connect, where you can find the log files created by Windows Installer. The URL is:
https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=259606
Any ideas what I can do to resolve this problem?
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May 16, 2015
How to accurately track how much memory was granted to a DBCC checkdb during it's execution?Â
I'd like to do this without continuously querying dm_exec_query_memory_grants, if at all possible - but if that's the only option.
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Nov 8, 2015
I recently installed a trial version of Sql12k on my laptop. Since 1st of November I've been creating tables without problems (15) and different schemas.I would like to emphasize that both mdf and ldf files are allocated in my USB3 portable disk. is that a problems for Sql12K? SSMS had stuck just for 20 sec or so. Then, system itself kill the task. A huge surprise when I restarted again... all the databases including the last one.. without objects. I mean, user databases...
Where are my logins? Where are my tables and schemas? Jesus christ.Sql logs inform the following (in all the moment my USB hardisk was properly connected)
11/08/2015 16:00:30,spid19s,Unknown,The operating system returned error 21(El dispositivo no está listo.) to SQL Server during a read at offset 0x000000 00140000 in file 'f:enriccopia_de_bbbb.mdf'. Additional messages in the SQL Server error log and system event log may provide more detail. This is a severe system-level error condition that threatens database integrity and must be corrected immediately. Complete a full database consistency
[code]....
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Feb 12, 2007
Hi,
I'm developing a Data Mart and i'm experiencing a performance gap between my fact table and its snapshot.
I create snapshot with the istruction:
CREATE DATABASE DB_SNAP ON
( NAME = DB_SNAP_Data, FILENAME =
'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataDB_SNAP_Data.ss' )
AS SNAPSHOT OF DB;
And it works. But executing queries on the snapshot result very "low".
Can anyone tell me why?
Tanks.
F.
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Apr 16, 2007
Hi. I'm evaluating performance features between Enterprise Edition and Standard Edition. I've heard that Database Snapshots are only available in Enterprise Edition, but cannot find anything that proves/disproves this.
Does anyone currently use Database Snapshots in Standard Edition SQL Server 2005? (Not talking about the Replication Database Snapshots.)
Quick script to try on a Standard Edition SQL Server:
CREATE DATABASE AdventureWorks_dbss1800 ON
( NAME = AdventureWorks_Data, FILENAME =
'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataAdventureWorks_data_1800.ss' )
AS SNAPSHOT OF AdventureWorks;
Thanks!
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Mar 8, 2007
Hello, My question is simply: according to BOL, a DB snapshot taken from a Mirror is read-only. Say I wanted a temporary (disposable) read-write DB created from the snapshot. Is there a way to generate a writable temp DB (that's not tempdb) from the snapshot? Thanks,AK
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Jul 2, 2007
So I've got this vendor-supplied database for a third-party application. Let's just say the database name rhymes with "MQManage".
For some reason the vendor elected to set up the database with Auto Shrink turned on (eeww) and to set up a job that runs DBCC CHECKDB() every 15 minutes (eeww). I'm working on resolving both of those issues right now. In the meantime, I'm getting sporadic messages from Microsoft Operations Manager (MOM) telling me that the database is suspect. The really odd thing is that there is nothing in the SQL Server error log, Windows event log, or anywhere I can find that says the database went suspect. The database isn't suspect, and there was no operator intervention.
So something is causing MOM to get a false positive here. Just on this one database on this one server.
Thoughts?
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Jan 30, 2007
Hi all
I have a database that is being restored to another instance of SQL server 2000 sp4 by attatching the mdf and ldf files. I then run EXEC sp_change_users_login to sync the users. When I try to run some delete commands on the new restored database I get 'Fatal error 8908'
I then run a DBCC CHECKDB on the database and told to run it again with REPAIR_ALLOW_DATA_LOSS
I have noticed that when I create a new databse and restore a .bak over this the delete commands work.
Am I correct in thinking that I can get rid of the corruption on the original database by creating a new database then restoring a valid .bak backup on this new database.
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Oct 17, 2007
I've read the bad news in other post but hopefully I misunderstood them. We have a database on an old sql 2000 server which had a data drive failure. The last backup is a year old. They told me they stopped doing backups because nothing was going to change. Well, changes were made to structures and stored procedures on the production (only) server and they want to try to recover the database. Should I bother opening a support call with MS? I'm embarred to even post the question but you never know. The database is currently in emergency mode. I can't see any of the user tables or stored procedures in Mangement Studio.
Msg 8966, Level 16, State 1, Line 1
Could not read and latch page (1:17913) with latch type SH. sysobjects failed.
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Jul 23, 2007
I have an SQL Job whose sole step is to run an SSIS Package via the File System mode. The .dtsx file itself is located on the server where SQL resides.
The SSIS task looks inside a specific directory and if a qualifying file exists, archives the file, unzips the file, rename the contents and, eventually, processess the files.
Invariably, if i Stop the Job before it has completed successfully, i notice that the underlying file (in this case, a .zip file) remains 'in use'. If i try and move the file or rename the file, the OS says "no can do; the file is in use".
but no matter where i look on the network when I go to Manage (right-clicking on My Computer), i cannot fine any reference under Shared Folders | Open Files to "close" the file.
can anyone shed some light on this? ie, how to close, etc.
thx very much.
seth j hersh
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Dec 14, 2000
According to the books online:
In earlier versions of SQL Server, it was recommended that DBCC statements be made a regular part of a database backup strategy.
It was recommended that databases be checked before being backed up. In SQL Server 7.0, this is no longer necessary.
Are integrity checks really no longer necessary in SQL Server 7? I have a third-party book in which the author states that he still does them
anyway. Should I continue to do DBCC CHECKDB?
Also, I am using database maintenance plans for several SQL Servers. When the integrity checks are performed will it log any errors
in the output log generated during the execution of the maintenance plan? The logs I receive look like the following:
[2] Database CPMCC_GL: Check Data and Index Linkage...
** Execution Time: 0 hrs, 39 mins, 54 secs **
If an error is detected would it be recorded here, or is this just a log to let me know that the checks were performed?
Tony
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Jul 8, 1999
Hi
Our supplyer of application we use say that dbcc checkdb or dbcc newalloc can
give corrupt database (use version 6.5). I wonders about this statement. Are ther some how have explanation about this
Kent vahlen
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Mar 29, 2007
Let me start off by saying that under normal circumstance I would just restore from the last good backup. However in this case it appears as though the last good backup was sometime last August ... arg! After much yelling at the person responsible I've been attempting to get my blood pressure below 200 and see what data is recoverable.
First off, this was a RAID5 system that failed 1 drive. Secondly, before we got someone in there to replace said drive it failed a second drive and the system went down. We managed to massage the system back online but it appears that there is some corruption as a result which is no surprise.
I've done DB repairs in the past and it hasn't been too bad, but this time it is looking a little gnarly.
I've kicked everyone off the server and tried starting SQLServer several different ways.
I tried starting the service normally and then flagging the bad DB into single user mode with "ALTER DATABASE foo SET SINGLE_USER". I then did a select * from sysdatabases to make sure it took, which it did. I also tried starting the whole SQLServer in single user mode from the command line, "SQLServr -m".
I can run "DBCC CHECKDB('foo')" and I get a long ugly list of allocation errors. I posted it to a link as the 1349 lines returned is a little long:
http://chrisnet.net/sqlbad/dbcc_checkdb.txt
But when I attempt to bite the bullet and destroy data in an attempt to put things back together with:
"DBCC CHECKDB('foo', REPAIR_ALLOW_DATA_LOSS) WITH ALL_ERRORMSGS"
I get:
Server: Msg 7919, Level 16, State 2, Line 1
Repair statement not processed. Database needs to be in single user mode.
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
But yet the database is in single user mode, according to everything I check check on. Is this just SQL's way of telling me the corruption is too severe to be repaired? No output is displayed in the shell cmd window like it is for a successful DBCC either (when running sqlservr -m).
Ideas? Or do I put a bullet through it's brain?
-Chris
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Jul 26, 2007
When I try to delete a job from Enterprise Manager Console I get the following error:
Erro 644: Could not find the index entry for RID '163bd10000010000' in index page (1:553), index ID 0 database 'msdb'
Oh and this is on MSDE.
Here is my complete output of DBCC CHECKDB
DBCC results for 'msdb'.
DBCC results for 'sysobjects'.
There are 280 rows in 6 pages for object 'sysobjects'.
DBCC results for 'sysindexes'.
There are 143 rows in 6 pages for object 'sysindexes'.
DBCC results for 'syscolumns'.
There are 1567 rows in 26 pages for object 'syscolumns'.
DBCC results for 'systypes'.
There are 26 rows in 1 pages for object 'systypes'.
DBCC results for 'syscomments'.
There are 357 rows in 108 pages for object 'syscomments'.
DBCC results for 'sysfiles1'.
There are 2 rows in 1 pages for object 'sysfiles1'.
DBCC results for 'syspermissions'.
There are 116 rows in 1 pages for object 'syspermissions'.
DBCC results for 'sysusers'.
There are 13 rows in 1 pages for object 'sysusers'.
DBCC results for 'sysproperties'.
There are 0 rows in 0 pages for object 'sysproperties'.
DBCC results for 'sysdepends'.
There are 1635 rows in 8 pages for object 'sysdepends'.
DBCC results for 'sysreferences'.
There are 12 rows in 1 pages for object 'sysreferences'.
DBCC results for 'sysfulltextcatalogs'.
There are 0 rows in 0 pages for object 'sysfulltextcatalogs'.
DBCC results for 'sysfulltextnotify'.
There are 0 rows in 0 pages for object 'sysfulltextnotify'.
DBCC results for 'sysfilegroups'.
There are 1 rows in 1 pages for object 'sysfilegroups'.
DBCC results for 'backupset'.
There are 1045 rows in 44 pages for object 'backupset'.
DBCC results for 'sysjobschedules'.
There are 7 rows in 1 pages for object 'sysjobschedules'.
DBCC results for 'syscategories'.
There are 19 rows in 1 pages for object 'syscategories'.
DBCC results for 'systargetservers'.
There are 0 rows in 0 pages for object 'systargetservers'.
DBCC results for 'backupfile'.
There are 1451 rows in 24 pages for object 'backupfile'.
DBCC results for 'systargetservergroups'.
There are 0 rows in 0 pages for object 'systargetservergroups'.
DBCC results for 'systargetservergroupmembers'.
There are 0 rows in 0 pages for object 'systargetservergroupmembers'.
DBCC results for 'restorehistory'.
There are 1 rows in 1 pages for object 'restorehistory'.
DBCC results for 'sysalerts'.
There are 9 rows in 1 pages for object 'sysalerts'.
DBCC results for 'sysoperators'.
There are 0 rows in 0 pages for object 'sysoperators'.
DBCC results for 'sysnotifications'.
There are 0 rows in 0 pages for object 'sysnotifications'.
DBCC results for 'restorefile'.
There are 2 rows in 1 pages for object 'restorefile'.
DBCC results for 'systaskids'.
There are 0 rows in 0 pages for object 'systaskids'.
DBCC results for 'syscachedcredentials'.
There are 0 rows in 0 pages for object 'syscachedcredentials'.
DBCC results for 'restorefilegroup'.
There are 1 rows in 1 pages for object 'restorefilegroup'.
DBCC results for 'logmarkhistory'.
There are 0 rows in 0 pages for object 'logmarkhistory'.
DBCC results for 'sysdtscategories'.
There are 3 rows in 1 pages for object 'sysdtscategories'.
DBCC results for 'sysdtspackages'.
There are 0 rows in 0 pages for object 'sysdtspackages'.
DBCC results for 'sysdtspackagelog'.
There are 0 rows in 0 pages for object 'sysdtspackagelog'.
DBCC results for 'sysdtssteplog'.
Server: Msg 8935, Level 16, State 1, Line 1
Table error: Object ID 2073058421, index ID 1. The previous link (1:343) on page (1:371) does not match the previous page (1:382) that the parent (1:300), slot 32 expects for this page.
Server: Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 2073058421, index ID 1. Page (1:371) is missing a reference from previous page (1:343). Possible chain linkage problem.
There are 0 rows in 0 pages for object 'sysdtssteplog'.
DBCC results for 'sysdtstasklog'.
There are 0 rows in 0 pages for object 'sysdtstasklog'.
DBCC results for 'sysdbmaintplans'.
There are 4 rows in 1 pages for object 'sysdbmaintplans'.
DBCC results for 'sysdbmaintplan_jobs'.
There are 4 rows in 1 pages for object 'sysdbmaintplan_jobs'.
DBCC results for 'sysdbmaintplan_databases'.
There are 12 rows in 1 pages for object 'sysdbmaintplan_databases'.
DBCC results for 'sysdbmaintplan_history'.
There are 724 rows in 23 pages for object 'sysdbmaintplan_history'.
DBCC results for 'log_shipping_primaries'.
There are 0 rows in 0 pages for object 'log_shipping_primaries'.
DBCC results for 'log_shipping_secondaries'.
There are 0 rows in 0 pages for object 'log_shipping_secondaries'.
DBCC results for 'mswebtasks'.
There are 0 rows in 0 pages for object 'mswebtasks'.
DBCC results for 'sqlagent_info'.
There are 0 rows in 0 pages for object 'sqlagent_info'.
DBCC results for 'sysdownloadlist'.
There are 0 rows in 0 pages for object 'sysdownloadlist'.
DBCC results for 'backupmediaset'.
There are 1045 rows in 11 pages for object 'backupmediaset'.
DBCC results for 'sysjobhistory'.
Server: Msg 8935, Level 16, State 1, Line 1
Table error: Object ID 2073058421, index ID 1. The previous link (1:382) on page (1:564) does not match the previous page (1:371) that the parent (1:300), slot 33 expects for this page.
There are 626 rows in 208 pages for object 'sysjobhistory'.
CHECKDB found 0 allocation errors and 3 consistency errors in table 'sysjobhistory' (object ID 2073058421).
DBCC results for 'sysjobs'.
There are 7 rows in 1 pages for object 'sysjobs'.
DBCC results for 'backupmediafamily'.
There are 1045 rows in 20 pages for object 'backupmediafamily'.
DBCC results for 'sysjobservers'.
There are 7 rows in 1 pages for object 'sysjobservers'.
DBCC results for 'sysjobsteps'.
There are 9 rows in 1 pages for object 'sysjobsteps'.
CHECKDB found 0 allocation errors and 3 consistency errors in database 'msdb'.
repair_rebuild is the minimum repair level for the errors found by DBCC CHECKDB (msdb ).
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
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Aug 30, 2007
I am trying to open reports through an existing application. When I click the button to run the report, the new window opens, appears to be trying to load (the windows logo in the top corner is flowing, the hourglass is present), and then stops. I am left with a blank window, no report, and no error message.
I am able to view and run the reports through the Report Server. Other users are able to run the reports through the application.
Any ideas?
Thanks,
Michelle
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Dec 8, 2014
I have huge database on prod. One time I tried to run DBCC CHECKDB, it took more than a day. My question is can I created a snapshot of the prod database on the same server and run DBCC CHECKDB on the Snapshot DB? will doing this interfere production database? I don’t have option to make copy of the database on a test server and run it there.
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Apr 13, 2007
Hi all,
we've been having this ancient database with old accounting data running in suspect mode since as long as I can remember (I started working here a year ago), and finally I had some time on my hands so I thought I'd try to get it online again. However I'm running in to problems:
DBCC CHECKDB (myDBName) gives this error:
Msg 926, Level 14, State 1, Line 1
Database 'myDBName' cannot be opened. It has been marked SUSPECT by recovery. See the SQL Server errorlog for more information.
Running sp_helpdb only does not display the suspect database and sp_helpdb 'myDBName' gives this error even though I'm a system administrator:
No permission to access database 'myDBName'.
It's possible that I might be able to dig up a backup but that would be quite tedious. Is it possible to bring the database to a state where I'm able to do a CHECKDB at least...?
--
Lumbago
"Real programmers don't document, if it was hard to write it should be hard to understand"
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Mar 13, 2015
In order to troubleshoot some deadlocking that I am seeing on SQL Server, I am trying to capture the Deadlock XML by enabling the Events Extraction Settings option 'Save Deadlock XML events separately' and specifying a Deadlock XML results file.
Meanwhile, I am also tracing the Deadlock graph, Lock:Deadlock, and Lock:Deadlock Chain events. Yet the xdl file remains empty even though I am getting hits on the events themselves in the SQL Profiler trace.
Also, I have the following trace flag settings enabled.
TraceFlagStatusGlobalSession
1204110
1222110
Why the xdl file remains empty even though (I think) it should contain some XML for deadlocks that are actually happening?
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Mar 15, 2007
I used the SQL Server 2005 Upgrade Advisor to upgrade from SQL Server 2000 Enterprise to 2005 Standard. The only complaint I got concerned DTS packages, but I had none anyway. When I open SQL Server Management Studio, I can run queries, but they're against tables in the old 2000 databases. The SQL engine and Server agent are version version 8.0. Not surprising that new TSQL statements like 'BACKUP SERVICE MASTER KEY TO FILE' won't work.
Do I have to uninstall my previous version before upgrading?
Thanks.
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Aug 22, 2013
We recently migrated our production server from SQL 2005 (Standard) on Win2003(32-bit) to SQL2012 (Standard; v11.0.3000) on Win2008-R2(64bit). Single-server Dell R510 with 1.2TB storage. Everything went smoothly; the only nagging issue remaining is failure of our maintenance jobs. I tracked the issue down to failure of DBCC CHECKDB. Specifically, the error is:Executed as user: NT SERVICESQLSERVERAGENT. The database could not be exclusively locked to perform the operation. [SQLSTATE 42000] (Error 5030) Check statement aborted. The database could not be checked as a database snapshot could not be created and the database or table could not be lockedI have Googled this issue and read extensively. For instance, informative blogs (albeit dated) such as these by Paul Randal (Managing
CheckDB by default takes an internal DB snapshot to get the consistent, point-in-time view of the DB that it needs. If that snapshot creation fails, then it will try to get an exclusive database lock before proceeding (same as if you had executed DBCC CHECKDB WITH TABLOCK). The root problem is not that the lock could not be obtained, it's that the internal database snapshot could not be created. msdn.microsoft.com/en-us/library/ms188796.aspx details the specific situations when an internal database snapshot is not created and table locking is attempted.Â
 I have verified the SQLSERVERAGENT service account has full permissions on the SQLDATA directory where the databases reside and has full permissions on each database within the directory. Just for giggles, I created a job (run as SQLSERVERAGENT) that creates and then deletes a text file in the SQLDATA directory. It runs fine.
Also testedI get the snapshot creation error when manually running DBCC CHECKDB against any of our databases and when executing under a variety of administrator accounts that are members of the SQL sysadmin role and the Domain Admins security group (the Domain Admins is a member of the local Administrators group that has full permissions on all SQL directories/folders).
Additionally, the databases in question are small (200MB to 6GB) and the disk has plenty of elbow room (978GB free on 1.22TB RAID5 array) to create the internal database snapshots. CHECKDB doesn't surface an error message that is detailed enough to determine the precise cause of the error. Any example successfully running DBCC CHECKDB on the SQL2012 (Standard) on a Win2008 R2 (64-bit) server.
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Dec 2, 2014
I have just finished configuring my first test mirrored environment (High safety mode). I setup the database engine service accounts on each of the servers with domainuser. I inherited a production mirrored environment set up by someone else. On the production servers the database engine service account is NT Authorityuser a local account. I am trying to practice installing Windows updates within a mirrored environment and I not sure how to proceed when the service account is NT Authority user account. should I change the service account to a domainuser?
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Aug 18, 2007
I have MS-Access as data source for one of the reports. I can preview the report fine from BI studio however, it does not work when I deploy it on report server.
The error is :
An error has occurred during report processing.
Cannot create a connection to data source '<data source name>'.
The Microsoft Jet database engine cannot open the file '<UNC location of the MS-Access database>'. It is already opened exclusively by another user, or you need permission to view its data.
MS-Access database is located on a different server.
Any help to solve this? I understand it has something to do with permission both on server where reporting service is running as well as the server where MS-access database is located. Pls help.
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May 14, 2007
Hi, all experts here,
Thank you very much for your kind attention.
I am trying to modify the files path (primary file, log file) of databases, but it looks like I am not able to mofidy their files path directly from the database property dialogue? Would please any experts here give me some ideas on what else can I try to figure it out? Thanks a lot in advance and I am looking forward to hearing from you shortly.
With best regards,
Yours sincerely,
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May 28, 2015
In my environment, there is maintenance plan configured on one of the server and while running DBCC checkdb on a database of size around 200GB, log file usage of tempdb is increasing and causing the maintenance job to fail.
What can I do to make the maintenance job run successfully, size of the tempdb database is only 50GB and recovery model is set to simple. It cannot be increased as the mount point on which it is residing is 50GB.
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Mar 26, 2007
Have 3 reports that runs using a shared schedule to generate historic snapshots. This has be working for months and months but out of nowhere it changed.
So now when ever the schedule runs it will generate the historic snapshot for 1 report but NOT the 2 remaining. As a strange twist the report that is successful changes from time to time...
SQL Server 2000, RS+SP2.
Any ideas?
Thanks
Regards
Jonas
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Jul 13, 2005
We will soon be going to a new ERP system using MS SQL 2000. I'm looking into possible backup strategies. The database size will be about 50 Gigs.
We have a SAN, which the new ERP system will be backed up on. I know a little about a SAN, but I need to make decisions about the types of backups to make. We can have 10 active snapshots, so I could use snapshots during the day as a point in time backup. I could also use the SAN snapshot instead of using a full backup. Would it be safe to use the SAN snapshots instead of the normal SQL Server backups? I’m not sure how long it will take to do a full SQL Server backup because the server is still in testing mode. I’m not getting the big picture about when to use snapshots and when to use regular SQL Server backups.
Is it possible in Windows 2000 Server to stop the transactions and flush the buffers for a few seconds to do a snapshot? From what I understand, the database could be left in a suspect state if you use snapshots to restore a database.
Thanks in advance for any help!
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May 16, 2008
I think I've read some conflicting advice in BOL. Maybe someone can clarify it for me.
Under "Database Mirroring and Database Snapshots" it says:
"You can take advantage of a mirror database that you are maintaining for availability purposes to offload reporting. To use a mirror database for reporting, you can create a database snapshots on the mirror database and direct client connection requests to the most recent snapshot"
To my mind, to enjoy a noteworthy performance gain, that mirror database would need to be on another server.
But then you read under "Database Snapshots":
"Multiple snapshots can exist on a source database and always reside on the same server instance as the database."
So how do you get the snapshot to the mirror?
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Nov 9, 2007
HiWhat would be the quickest way to create a backup and revert programon an sql (2000) database?- Can you create a transaction on a database, regardless of theconnections and thenrollback it all via an external program- Could you monitor the changes with profiler and then reverse those?- If desperate, could you backup the db from a tool and then restoreit? (too slow to be practical?)Not sure how to do this so any offers would be appreciatedta
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May 2, 2006
If multiple snapshots for the same report attempt to generate at the same second, is there something in place to prevent them from conflicting with each other?
Our SSRS 2005 application will use a console app that we are writing to change the default parameters on each report and call the CreateReportHistorySnapshot method. This application will be multi-threaded, so there is a possibility that multiple versions of the same report with different parameters will attempt to run at the same time. We need to be sure that these snapshots will not conflict and return the appropriate SnapshotHistoryID for that report run.
From looking at the History table in the ReportServer database it looks like there are uniqueIDs and other keys that would prevent duplicates, but what if the requests come in at the same time? Is SSRS 2005 smart enough to delay for a second so that there is not a duplicate? Since the way you reference these snapshots in your URL is with the Snapshot Time in UTC format, that only goes out to full seconds (2006-05-02T00:00:00).
Sorry for the length, but I could not think of how to condense this.
Thanks,
Steve
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May 13, 2008
Hopefully not too much of a stupid question.
At the moment, we are using SSRS to report off an Oracle database, if we take a snapshot of the data on the Oracle database and put it within SQL, will we expect an increase in performace/response.
And is it a good idea to keep the snapshot in the same place where SSRS is installed?
Thanks in advance.
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Mar 12, 2008
I want to share one of my doubt about SSRS and report server,
if i use snapshots or cache to my reports in report server, is it going to make increase in performance?
if it is going to make increase in performance,then SQLSERVER DATABASE is going to have any burdens,
means is it going to down the performance of Database?
Pls give me Responce to my Questions....
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Jun 15, 2007
Hi
I am creating a full Merge replication setup between two servers
Is there any way that I can set it up so that I do not have to create a snapshot.
Ie I would gurantee that the data and structutre is EXACTLY the same on both the subscriber and the publisher.
The problem is that my data base is over 4GB and it is quicker for me to get the data from one server to the other by doing a backup and restore.
I am using SQL 2005 with the latest SP
Cheers
Ants
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