My trancaction log is 25GB and my database file is 39GB. I just
switched to the 'Simple' recovery model from the 'Full' recovery model.
When if ever can I expect the size of the transaction log to reduce in
size? Is there anything else that I should do to aide with the
reduction?
Thanks,
Peter
We have the following scenario,
We have our Production server having database on which Few DTS packages execute every night. Most of them have Bulk Insert stored procedures running.
SO we have to set Recovery Model of the database to simple for that period of time, otherwise it will blow up our logs.
Is there any way we can set up log shipping between our production and standby server, but pause it for some time, set recovery model of primary db to simple, execute DTS Bulk Insert Jobs, Bring it Back to Full recovery Model AND finally bring back Log SHipping.
It it possible, if yes how can we achieve this.
If not what could be another DR solution in this scenario.
Thanks Much
Tejinder
We are using a .bat script to restore several client dbs onto our sql server 2000 db. We want to set the client dbs from full recovery to simple. What command should I use in the .bat file to make this change?
.bat file ==
:: Second, restore data from SQL Server backup file to SQL server...
isql -E -S ao3ao3 -Q "RESTORE DATABASE CBSN FROM DISK = 'D:MARS_SYSDATAUPDATESCBSNCBSN.BAK' WITH MOVE 'MEDISUN_BCNV_Data' TO 'D:SQLDATACBSN_data.mdf', MOVE 'MEDISUN_BCNV_Log' TO 'D:SQLDATACBSN_log.ldf',REPLACE;"
We have a fairly large database that we use to store mom alerts and it stopped alerting as it's transaction log became full. I suggested to the owner of the database to set the simple recovery model so the log could automatically be truncated. However, it appears that the database is frequently reaching it's limit (of 3gb) and I'm having to set the limit even higher on a daily basis. Can anyone tell me why this is occuring? I understood that when the log file reaches 70% it should automatically shrink?
Kind Regards
Mike
I have a database that I am trying to recover space from, it consists mostly of unallocated space, but I can’t seem to get that unused space released.
Database size: 40,245.13 MB
DatafileMB: 38,063.63, DataAvailableMB: 37,085.15
LogfileMB: 2181.51
Sysfiles shows:
fileidgroupidsizemaxsizegrowthstatusperfname
114872144-112820SomeDB
202792332684354561010486420SomeDB_log
The DB is in simple recovery mode. There are no open transactions (used dbcc opentran).
The server is running SQL Server 2014 and the DB is in compatibility mode SQL Server 2008 (100). It was upgraded to 2014 a month or two ago.
I have tried to re-size the log to 100mb, but any way I have tried (none gave errors), the log file remains the same size. I have tied to shrink the log file (through the UI and via DBCC commands) without success; no errors, but also no change in file size.
I have checked Log Reuse Waits, just in case, and as expected it showed “NOTHING” (select log_reuse_wait_desc, name from sys.databases)
I tried running a checkpoint, but that did not allow any resize or shrink to work.
I have tied creating large transactions to move the used point in the log file, in case this was the issue. I did this by creating tables that I drop after large inserts. While it shows me that the log space % used increased, the log file still does not allow the space to be reduced.
The following is what I was using for the transactions to get the log used.
BEGIN TRAN
select a.* into testtable from sysobjects a, sysobjects b, sysobjects c
ROLLBACK TRAN
Each insert creates 93,576,664 rows.
Running dbcc SQLPerf(logspace) :
DBLogSize(MB)LogSpaceUsed(%)Status
SomeDB2181.534.204890
Running dbcc loginfo:
RecoveryUnitIdFileIdFileSizeStartOffsetFSeqNoStatusParityCreateLSN
0211437342728192602640
02114373427211437424645701280
Do I just need to continue running large transactions until the log space used gets high enough to get the “end point” in the log to really move? Is there an easier way to accomplish this (I have several DBs that have the almost identical problem), what I am using moves the Log Space Percent Used about a percent on each execution.
DB replication can set db recovery model to simple ,why db mirror can not db recovery model to simple.
DB mirror must be set to full recovery model.
As far as I know, whatever db mirror and db replication ,there is a log reader to read the log in the ldf file DB mirror and DB replication are almost the same principle to replicate the db to another db server.
I have convert all databases to Full from Simple Recovery model.
As per documentation, it looks like simple.
Based on your experiences , do you think of any problem may come while doing this ?
Any impact on application performance after this ?
Is this work perferened to do when no body using system ?
Thanks
On SQL 2000 or SQL20005 will a database's log file automatically be truncated if the database is on simple recovery model?
The reason I ask is that we have a database (simple recovery) that keeps growing its logfile each weekend which causes disc space problems.
I am kinda new to SS but from the reading in BoL I've done was under the impression that for simple recovery model log records are only needed until the transaction has been written to disc and committed, and that SS will handle truncating obsolete records from the log where necessary.
I'm doing DBCC SQLPERF(logspace) which shows this first thing on a Monday morning:
Database Name Log Size (MB) Log Space Used (%)
-------------- --------------- ---------------------
myDB 4841.93 99.19465
Note the size of the log file - the data file is only 700MB!
Issuing a DBCC OPENTRAN doesn't show any open transactions, and a CHECKPOINT doesn't do anything to reduce the log space used (which if there were dirty records in the log still not written to disc this ought to do shouldn't it?).
The database is only written to as a replication subscriber.
Any suggestions what would be causing the log file to fill up?
At the moment I'm resorting to BACKUP LOG myDB WITH TRUNCATE_ONLY and considering scheduling this as an hourly job over the weekend - any reasons why this could be a bad idea?
Many thanks,
Moff
When I create a database, is there a way to make sure that the default recovery model is Full instead of Simple?
View 1 Replies View Related
Hello,
I have a question regarding the backup for the database in Simple Recovery Model.
In this Model, I know we can restore only to the last full backup or can use differential
Backup, if implemented as a part of backup.
But my point of confusion is about the backup of '.ldf' file, should those file should be backed up in the
Maintenance Plan, if yes does it help in reducing the size of Log file?
Do we need the backup of '.ldf' in phase of Restoring?
As I mention my database has Simple Recovery Model, but the size of log file is around 20GB,
Could not understand why as in this Model, normally it automatically truncate the Log file?
Help me to clear my these doubts,
thanks,
Have a database that's in "Simple" recovery mode whose .ldf has grown to 270GB. This database is a data warehouse so "full" is not required. I put it in simple mode a month ago and shrunk the log down and now it's filled up the disk.
What steps can I take to mitigate this in future? I've read that this is caused by long running transactions which fill the log for DR purposes. Should I put the database back into full mode and backup/truncate daily.
The auto-growth is set to 128MB which is very low.
One of our database is in simple recovery model, and usually generating more than 220 GB log file (.ldf) every week. We are shrinking log file many times to release the space.
But as its not advisable I am looking for any other options. I suggested to change the recovery model to Full and start T-log backup, but client dont want to change recovery model.
Is there any way to manage Log file of Simple recovery model to maintain disk space?
Will full backup truncate log file ?
We have a sql 2005 x64 database (datawarehouse related), essentially a work area for us, that we truncate and re-populate via BCP weekly. (We don't backup the database at all) . From the perspective of data-import speed what is the best recovery model to use: Bulk-Logged or Simple? (I have read sql 2005 BOL and don't find it partcularly clear on this point.)
Barkingdog
P.S. Anyone know of an article listing "best practices" for high-speed data import?
Can the deleted records be recovered in Simple Recovery model database? Are the delete logs present there?
View 3 Replies View RelatedHi,
What is the relationship between recovery model and transaction log? How does recovery model affect txn log file size?
How to decide which model should I use?
Thank you
hi,
we have a SQL Server 2000 database which we set to 'SIMPLE' recovery mode at 6pm (due to nightly large data loads). We revert back to 'FULL' recovery mode at 6am.
My understanding was that in 'SIMPLE' recovery mode, the transaction log would not grow because it would automatically be truncated after a checkpoint. However this is not the case. I thought perhaps it could be due to a long running uncomitted transaction, but when I ran 'dbcc opentran', the oldest running transactions doesn't last for more than a couple minutes. I manually run a 'checkpoint' command as well in the hope of forcing the transaction log truncation. I repeat this a couple of times to no avail. When I run 'dbcc sqlperf(logspace)' , I can still see the transaction log growing.
It is not until I run 'backup log db with truncate_only' that the transaction log gets truncated.
I do not understand, why the transaction log does not get automatically truncated in SIMPLE recovery mode?
Andrew
is bulk logged recovery model support point in time recovery
View 9 Replies View RelatedPages on a full recovery model database corrupted, need to ensure data loss is minimal for restore operation am thinking about restoring the latest full backup.
View 4 Replies View Relatedin the process of migrating a big db from server 1 to server 2, we had to roll back the change. I started with taking a full db backup and restoring it on server 2 with norecovery, and then a couple logs with norecovery, and then the last log with recovery.
Is there some way to continue this chain now, I mean to change the db to norecovery, or other way to restore logs.
I dont want to do a new full backup.
If I try to do a log restore now i get the message:
Msg 3117, Level 16, State 4, Line 1
The log or differential backup cannot be restored because no files are ready to rollforward.
Msg 3013, Level 16, State 1, Line 1
RESTORE LOG is terminating abnormally.
SQL Server 2000 SP3.
Prior to SP3 the recovery model was switched to simple during transfer (Copy object task) and changed back to the previouis setting after DTS was complete.
Nice thing because performance was increased and T-Log was keep small.
Now I assume that the recovery model is switched to bulk-logged causing the T-Log to explode, to be onest not in all my databases.
1.Is my interpretation regarding recovery model correct?
2.Does anybody knows the reason of this change?
Any suggestion is really appreciate.
Thank you very much - kind regards.
Hello,
I'm new to MS SQL Server I want to know which recovery model is good, Full or Bulk Logged as I'm doing full backup at 11:00 PM and diffential Backup at 12:30 PM and from 8:00 AM to 6:00 PM 15 min log backups.
Please guide me which recovery model should I choose.
Thanks
Lara
What would be the best Recovery Model for: a database which is 4 gig in size and imports via MSAccess queries and also stored procedures approximately 400,000 meg of data each month (and some other update queries are run against it) and it is also queried off of for totals on weekly basis?
The problem is that the SQL Server box only has 512 meg of memory and the tranlog on this database grows tremendously each import and when update queries are run against it. This tends to slow things down a bit on our other databases. We are getting a new SQL Server box but until then, what would be the best recovery model? I currently have it as Bulk-Logged and allow the tranlog to grow by 10% (with a base of 250 meg). The tranlog grows to up to 5-10 gig and in order to shrink it, I have to change the recovery model to Simple, and then back to Bulk-Logged in order to shrink it (I've tried all the dbcc shrinkdatabase, dbcc shrinkfile, dbcc showcontig, and dbcc checkdb commands as well as BACKUP LOG dbName WITH TRUNCACTE_ONLY and nothing will shrink it unless I change the recovery model to simple.)
I can't understand what is diff between simple & bulk-logged recovery
model
Is it possible to shrink Transaction Log file? If yes, how? Urgent matter please.
Regards,
Is it possible to shrink the size of a transaction log file in SQL 6.5. Normally in SQL 7.0 I use detach and reattach but this is not supported in 6.5. The log file for a 200Mb database is 749Mb with no unused space and no open transaction. Thanks
View 2 Replies View RelatedHi,
I have a t-log on one database which is 400mb when the database size is only 30mb. dbcc shrinkfile does not work and dbcc opentran shows no open transactions. When I tried to do a Backup log with truncate_only the following message displays:
The log was not truncated because records at the beginning of the log are pending replication. Ensure the Log Reader Agent is running or use sp_repldone to mark transactions as distributed.
The database in question is not a publisher and only receives 5 subscribed articles, none of which are changed very often. The database operates 24 x 7.
Does anyone have a solution to this dilemma?
Thank You
How can I reduce the size of transaction log of a database...?pls hel me...
View 2 Replies View RelatedHi Friends,I have tried almost everything but I cant seem to shrink thetransaction log.Executing DBCC SQLPERF(LOGSPACE)gives me this info:Database Log Size (MB) Log Space Used (%) StatusMY_eems 368.49219 16.034182 0I made a complete backup of the database and transaction log and thenexecuted this statement:DBCC SHRINKFILE (MYeems_log, 1)and this is the message I gotCannot shrink log file 2 (ghgeems_Log) because all logical log filesare in use.DbId FileId CurrentSize MinimumSize UsedPages EstimatedPages------ ------ ----------- ----------- ----------- --------------17 2 42880 34561 42880 34560(1 row(s) affected)DBCC execution completed. If DBCC printed error messages, contact yoursystem administrator.How can I get the transaction log to its minimum size?Any help will be appreciated,ThanksA.B
View 5 Replies View Related
I have 4 large sql dbs. All 4 have been trimmed down by deleted recs from the db, then shrinking. 3 out of the 4 shrunk successfully and the log files are much smaller than the data files. On the 4th the data file shrunk to 14G, but the log file stayed at 47G. I have tried truncating and then shrinking, but it never gets any smaller.
Any suggestions on why this particular one will not shrink?
Hello, everyone:
There are some explanations on this topic from books and BOL. Could you offer the real experience? Thanks.
ZYT
does the recovery model also change in a replication enviroment when you change a database from simple to full?
regards
Johan van der Wiel
Johan.vanderWiel@getronics.com
I have seen quite a few people post this type of problem, but I am finding few solutions. Your advice and/or experiences are greatly appreciated.
Here's my scenario:
Environment: Windows NT 4.0 SP 6, SQL 7.0 (set up for Transactional Replication)
Problem: We have several remote dB machines configured for full recovery. On these machines are several dB's that are capturing aprox. 280 data points per second per unit. (Each dB represents one unit, and we have 21 units) No problem here. The problem is the transaction logs, that obviously grow profusely, will not SHRINK after, backups, dbcc commands and TSQL has been issued in failed attempts to shrink the logs. (in other words we've tried everything)
My questions are:
1. Because we are replicating, is it absolutely necessary to configure dB's for FULL recovery? How do I check in 7.0 if the dB is certainly in FULL vs. SIMPLE recovery mode?
2. I work with SQL 2000 and shrinking files is no problem. How can we shrink these log files in SQL 7.0?
It is rather urgent I find a solution as we are running out of hard drive space on our remote machines. Please help :-(
Christine
Hi Everyone,
I have a SQLServer 7.0 conversion db. Data file is 89 mg. The log has grown into 238 mg. Db and log are backuped nightly. Optimization and integrity jobs run weekly. The transaction log keeps growing! Truncate log on checkpoint is on and autoshrink is on.
What else can I do to truncate my log?
LT