What are the pros and cons of putting the system databases in full recovery mode
I am asked by my manager to keep everything simple and uniform.We have all the user databases in Full recovery mode and he wants all the system databases as well to be full recovery mode.
I would like to get the points where in i can argue that, there is no point in having the system databases in full recovery mode.Unfortunately i dont see anything related to this in BOL or internet.
When we do a full database backup manually, we are seeing the trn file reflect the current date/time, but we are not seeing the mdf reflect the new date/time. And we are not seeing the transaction log file decrease in size. the recovery mode is set to full, do we need to change to simple to see both the mdf being backup'ed?
I have two instances (Source and Destination) on the same server, i did a full backup of a database on the source server, i did a restore on the destination using the NORECOVERY mode, now the database on the destination as green arrow saying "restoring". From the source database i set up the mirroring, i'm using port 5022 on source and 5023 on destination, everything seems to connect fine but when i start mirroring i get the error message "Database mirroring cannot be enabled because the database is not full recovery error: 1465" but when i look at the property of the db on the source the recovery model shows full as so the destination?
I have a stored proc that runs through my databases doing transaction logs. Currently it uses database names but this keeps being changed as a database will be added without me knowing. Next thing the transaction log job is goosed.
I really need something along the lines of select db from sys???? where mode = 'Full'
Pages 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.
We have 3 replica AG setup. 2 replicas are in sync/automatic failover, the other(DR Server, different subnet) in asynchronous/manual mode…All these replicas were on sql server 2012, Recently we upgraded DR server to 2014. Since then we have a problem, the AG databases in 2014 instance went into ‘Synchronizing/ in recovery’ state…The SQL server error log has message, the recovery couldn’t start for the database ‘XYZ’…We tried to create a new database and add it to AG , it works for fine for other two 2012 replicas, but on 2014 we see the same issue
If you are doing a disaster recovery of an entire SQL 2005 cluster, can you just install SQL server and restore the system database to get the configuration?
On SQL 2000, if I have a large transaction log for my database and I manage to fill it with a single large transaction but it is not set to autogrow, what happens?
We have 300+ databases on one sinlge server (SQL 2005). If I need to change recovery mode from full to simple for all of them, is there any way to do so? Please advice.
I have a db running under simple recovery mode. I am really pressed at disk space, and we have a long running script that keeps failing with "no space left on the device" error. I noticed the log file is very large. I plan to set the max log file size but at the same time I want to know that the database is in the log-truncate mode - perhaps from the database itself. Is there any metadata that could tell me this?
I have several databases that perform daily backups. Ever since I installed SP2, the backup jobs are failing. The logs state that it's because the database recovery mode cannot be SIMPLE, but need to be either FULL or Bulk-Logged.
Can anyone tell me if this is true, and that I do have to change my recovery mode?
Here's the error:
NEW COMPONENT OUTPUT Microsoft(R) Server Maintenance Utility (Unicode) Version 9.0.3042 Report was generated on "ICIS-SQL-SERVER". Maintenance Plan: DB Backup Duration: 00:08:05 Status: Warning: One or more tasks failed.. Details: Back Up Database (Transaction Log) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All user databases Type: Transaction Log Append existing Task start: 2007-03-10T05:08:09. Task end: 2007-03-10T05:08:09. Failed:(-1073548784) Executing the query "BACKUP LOG [hl7 db_SamirTesting] TO DISK = N'D:\mssql\backup\hl7 db_SamirTesting\hl7 db_SamirTesting_backup_200703100508.trn' WITH NOFORMAT, NOINIT, NAME = N'hl7 db_SamirTesting_backup_20070310050809', SKIP, REWIND, NOUNLOAD, STATS = 10 " failed with the following error: "The statement BACKUP LOG is not allowed while the recovery model is SIMPLE. Use BACKUP DATABASE or change the recovery model using ALTER DATABASE. BACKUP LOG is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Command:BACKUP LOG [hl7 db_SamirTesting] TO DISK = N''D:mssqlackuphl7 db_SamirTestinghl7 db_SamirTesting_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_SamirTesting_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP LOG [dg_efilm_153] TO DISK = N''D:mssqlackupdg_efilm_153dg_efilm_153_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''dg_efilm_153_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP LOG [hl7 db] TO DISK = N''D:mssqlackuphl7 dbhl7 db_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10
Back Up Database (Transaction Log) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All user databases Type: Transaction Log Append existing Task start: 2007-03-10T05:08:09. Task end: 2007-03-10T05:08:09. Failed:(-1073548784) Executing the query "BACKUP LOG [dg_efilm_153] TO DISK = N'D:\mssql\backup\dg_efilm_153\dg_efilm_153_backup_200703100508.trn' WITH NOFORMAT, NOINIT, NAME = N'dg_efilm_153_backup_20070310050809', SKIP, REWIND, NOUNLOAD, STATS = 10 " failed with the following error: "The statement BACKUP LOG is not allowed while the recovery model is SIMPLE. Use BACKUP DATABASE or change the recovery model using ALTER DATABASE. BACKUP LOG is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Command:BACKUP LOG [hl7 db_SamirTesting] TO DISK = N''D:mssqlackuphl7 db_SamirTestinghl7 db_SamirTesting_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_SamirTesting_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP LOG [dg_efilm_153] TO DISK = N''D:mssqlackupdg_efilm_153dg_efilm_153_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''dg_efilm_153_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP LOG [hl7 db] TO DISK = N''D:mssqlackuphl7 dbhl7 db_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10
Back Up Database (Transaction Log) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All user databases Type: Transaction Log Append existing Task start: 2007-03-10T05:08:09. Task end: 2007-03-10T05:08:09. Failed:(-1073548784) Executing the query "BACKUP LOG [hl7 db] TO DISK = N'D:\mssql\backup\hl7 db\hl7 db_backup_200703100508.trn' WITH NOFORMAT, NOINIT, NAME = N'hl7 db_backup_20070310050809', SKIP, REWIND, NOUNLOAD, STATS = 10 " failed with the following error: "The statement BACKUP LOG is not allowed while the recovery model is SIMPLE. Use BACKUP DATABASE or change the recovery model using ALTER DATABASE. BACKUP LOG is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Command:BACKUP LOG [hl7 db_SamirTesting] TO DISK = N''D:mssqlackuphl7 db_SamirTestinghl7 db_SamirTesting_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_SamirTesting_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP LOG [dg_efilm_153] TO DISK = N''D:mssqlackupdg_efilm_153dg_efilm_153_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''dg_efilm_153_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP LOG [hl7 db] TO DISK = N''D:mssqlackuphl7 dbhl7 db_backup_200703100508.trn'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_backup_20070310050809'', SKIP, REWIND, NOUNLOAD, STATS = 10
Back Up Database (Transaction Log) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All user databases Type: Transaction Log Append existing Task start: 2007-03-10T05:08:08. Task end: 2007-03-10T05:08:09. Failed:(0) Database 'hl7 db_SamirTesting' will not be backed up because it does not have its recovery model set to Full or BulkLogged.
Back Up Database (Transaction Log) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All user databases Type: Transaction Log Append existing Task start: 2007-03-10T05:08:08. Task end: 2007-03-10T05:08:09. Failed:(0) Database 'dg_efilm_153' will not be backed up because it does not have its recovery model set to Full or BulkLogged.
Back Up Database (Transaction Log) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All user databases Type: Transaction Log Append existing Task start: 2007-03-10T05:08:08. Task end: 2007-03-10T05:08:09. Failed:(0) Database 'hl7 db' will not be backed up because it does not have its recovery model set to Full or BulkLogged.
Back Up Database (Full) (ICIS-SQL-SERVER) Backup Database on Target server connection Databases that have a compatibility level of 70 (SQL Server version 7.0) will be skipped. Databases: All databases Type: Full Append existing Task start: 2007-03-10T05:00:06. Task end: 2007-03-10T05:08:08. Success Command:EXECUTE master.dbo.xp_create_subdir N''D:mssqlackupmaster'' GO EXECUTE master.dbo.xp_create_subdir N''D:mssqlackupmodel'' GO EXECUTE master.dbo.xp_create_subdir N''D:mssqlackupmsdb'' GO EXECUTE master.dbo.xp_create_subdir N''D:mssqlackuphl7 db_SamirTesting'' GO EXECUTE master.dbo.xp_create_subdir N''D:mssqlackupdg_efilm_153'' GO EXECUTE master.dbo.xp_create_subdir N''D:mssqlackuphl7 db'' GO BACKUP DATABASE [master] TO DISK = N''D:mssqlackupmastermaster_backup_200703100500.bak'' WITH NOFORMAT, NOINIT, NAME = N''master_backup_20070310050006'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP DATABASE [model] TO DISK = N''D:mssqlackupmodelmodel_backup_200703100500.bak'' WITH NOFORMAT, NOINIT, NAME = N''model_backup_20070310050006'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP DATABASE [msdb] TO DISK = N''D:mssqlackupmsdbmsdb_backup_200703100500.bak'' WITH NOFORMAT, NOINIT, NAME = N''msdb_backup_20070310050006'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP DATABASE [hl7 db_SamirTesting] TO DISK = N''D:mssqlackuphl7 db_SamirTestinghl7 db_SamirTesting_backup_200703100500.bak'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_SamirTesting_backup_20070310050006'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP DATABASE [dg_efilm_153] TO DISK = N''D:mssqlackupdg_efilm_153dg_efilm_153_backup_200703100500.bak'' WITH NOFORMAT, NOINIT, NAME = N''dg_efilm_153_backup_20070310050006'', SKIP, REWIND, NOUNLOAD, STATS = 10 GO BACKUP DATABASE [hl7 db] TO DISK = N''D:mssqlackuphl7 dbhl7 db_backup_200703100500.bak'' WITH NOFORMAT, NOINIT, NAME = N''hl7 db_backup_20070310050006'', SKIP, REWIND, NOUNLOAD, STATS = 10
What is the impact of changing the recovery mode of a database from Full to simple? The client I am at has set their database to full recovery mode, set their log files to grow automatically. But I don't think they have ever done a backup of their transaction log (it has grown to over 19Gig, where the data portion of the database is only around 400M).
What is the impact of truncating the transaction log now? After truncating it, i would like to shrink the file to a managable number and change the recovery mode to simple (they don't need transaction log backups)
By default, distribution database is set to simple recovery mode. Why ? Should this be changed to full ? how often should transaction logs be taken ? What is the recommendation ?
1st question I have to ask is: Is Emergency Mode the same as Bypass Recovery Mode?
2nd: I have a SQL2005 Database that was suspect this morning. I put the database in Emergency Mode: alter database {dbname} set emergency.
I did a dbcc checkdb on the database and found some corrupt indexes. I attempted to do a dbreindex on the table and got the error: Could not run BEGIN TRANSACTION in database '{dbname}' because the database is in bypass recovery mode.
How can I put the database in single_user mode and to a point where I can reindex the 1 table that is causing the problems. I would even be willing to drop the indexes and re-create.
Any suggestions or help would be appreciated! Thanks in advance.
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?
My understanding is that the log file is not supposed to grow if the database is under simple recovery mode.I am in a situation where the log grows if do any inserts that involve millions of rows.How do i make sure that it does not grow?
I have a small, ~10GB SQL 2008 R2 database, that was setup with simple recovery. We do full backup each night at midnight when no one is using the database. Is there any problems with doing differential backups during the day when users may be writing to the database? Could I even do hourly differential backups while users are using the database? I'm conflicted about switching over to full recovery mode and using transaction logs to have the ability restore data between backups. If I can do a couple daily differential backups while users are using the database during the day, in addition to our nightly full backups, than I live with simple recovery mode.
Wondering whether I can have following included in a script file:
1. set the current single user db from Full to Simple recovery mode. 2. Checkpoint and shrink the transaction log file (release all unused space) 3. set the current single user db from Simple recovery to Full recover mode.
Hi, I run 2 steps viz with NORECOVERY and with RECOVERY in sequence as SQP jobs. The 2nd step fails some times. When it starts failing, I run full backup of the production server again and the 2nd step starts succeding. Unless I run the full backup the 2nd step keeps on failing.
What are the conditions which generate for [SQLSTATE 42000] (Error 3013) and how to tackle this problem.?
The 2 steps are :- 1.RESTORE DATABASE ARSYSTEM FROM DISK = 'E:SQL backup from productionsql_full_backup' WITH Replace , MOVE 'arsystem' TO 'd:ardataarsystem.mdf' , MOVE 'arsystem_log' TO 'D:ARLOGARsystem' , NORECOVERY GO
2.RESTORE DATABASE ARSYSTEM FROM DISK = 'E:SQL backup from productionSQL daily diff back up' WITH Recovery
The status of the 2 steps is : 1 Executed as user: BPOTESTREMEDY emedybackup. Processed 104480 pages for database 'ARSYSTEM', file 'ARSystem' on file 1. [SQLSTATE 01000] (Message 4035) Processed 1 pages for database 'ARSYSTEM', file 'ARSystem_log' on file 1. [SQLSTATE 01000] (Message 4035) RESTORE DATABASE successfully processed 104481 pages in 49.452 seconds (17.307 MB/sec). [SQLSTATE 01000] (Message 3014)
2. Cannot apply the backup on device 'E:SQL backup from productionSQL daily diff back up' to database 'ARSYSTEM'. [SQLSTATE 42000] (Error 3136) RESTORE DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.
Which system table is this information held in, i restored over 100 databases and want all of them to be simple mode. I manually set it each time after each restore, but i want to confirm but i cannot find the sys table to do a select on. I looked at sys.sysdatabases
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
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.
I need to change the authentication mode from 'windows' to mixed, its a 4-node participating in always-on... Will this brake/impact alwayson in any way? I know I have to restart the sql instance.
I have a database that is set to Full recovery model, I would like to switch to simple. I must perform some procedure before doing so? The size of the transaction log is very high in this database, I would like to decrease it before moving to simple, have a problem doing that?
Pardon me and my ignorance for asking this question. I just want to understand the backup architecture more clearly. According to BOL (both in SQL 2k and SQL 2k5) in simple recovery mode trasaction log backup is not possible since the log is truncated on checkpoint which is true. Also we know that FULL backup backups both the db and transaction log as well.
My question is what happens when a database is in simple recovery mode and a full backup is done. since the tran log cannot be backed up does only the db backup is done when a full backup is done?. What exactly happens behind the scenarios?. Is it that only the active log gets backed up when a full backup is done in simple recovery mode?. I am trying to understand how a full backup in simple recovery mode behaves without contradicting the full backup architecture and that the veracity of the statement (both db and tran log backup in full backup mode) holds true for a simple recovery scenario.
MVPs/ MS Experts if you could Please explain it in detail, I would really appreciate it.