Transaction log is a list/history of modification executed by a database management system to guarantee ACID properties over crashes or hardware failures.

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4
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MSDB log file size

We have a SQL Server 2008 cluster with 60 databases. Full backup runs every night, log backup runs every 15 minutes. The MSDB database recovery model is set to simple (default). To be able to see ...
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0answers
27 views

How to shrink the .ldf(log) file of the particular live production database? [duplicate]

I would like to say that as one of my production database (.ldf) log file is growing larger than databse size. The size of database file (.mdf) and their log file (.ldf) is as follows:- 1)database ...
3
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1answer
177 views

Misaligned Log IO Issues and Unmatched LUN sector sizes in AlwaysOn

I'm running into a little bit of a snag on a high log send queue in a 2014 SP1 Asynchronous Mode AlwaysOn Environment with a secondary replica in Azure. For one of our higher transaction volume DB, ...
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1answer
75 views

Log shipping 2008 r2 SP2 server to a 2008 r2 SP3 CLUSTER

We have recently configured one database to be replicated with log shipping in production, using SQL Server 2008 R2. We have up and running more than 150 database replicas without any problems. But ...
2
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3answers
236 views

Backup database by copying the MDF and LDF files

I want to backup a SQL Server database by copying its files manually. Is copying the database.MDF and database.LDF files enough or should I also add more files? It might be not the proper way for ...
1
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1answer
33 views

Corruption in mariadb binlog

I have an installation with mariadb version 10.0.21. I need to backup the binlog file every 5 minutes to TSM, but as the binlog is being written every second, i am afraid of the file getting ...
3
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0answers
49 views

Influence of index rebuild tasks in tempdb on the transaction log?

I have read pretty much about index maintenance and all the pros/cons of reorg, rebuild, online, offline, TEMPDB and timing and right now I am kind of more confused than ever before... The goal is to ...
0
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1answer
149 views

How to automatically shrink a SQL Server transaction log only if it exceeds a certain limit (e.g. 20 GB)

Our database is set to FULL recovery mode and we take a database backup and a log backup every night. On several occasions we have noticed that the transaction log file is not truncated after the log ...
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1answer
24 views

Keeping all SQL Server logs

I can not find my SQL Server logs for all days in the past. In only found for last 4 days. Is it because that I restarted the server and logs are dumped if the hosting server is restarted? How can I ...
1
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1answer
60 views

Really big LOG backups on a DB with Image field

Normally, our log backups has < 10MB size In a big database with a lot of transactions per hour ). But now we have a database, that is storing Images on a Image field. the problem is, the ...
0
votes
1answer
28 views

Index Rebuilding Log File Growth

I would like to start running regular index maintenance on a server that has been running for a while without it. The database is running in FULL recover with log shipping. The problem I am having is ...
4
votes
1answer
71 views

Would SQL in a cluster failover when transaction log for database is full?

I have a Microsoft SQL Cluster with one instance. If one of the databases is full, would SQL in a cluster failover when transaction log for database is full? If it depends on the reason the ...
2
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2answers
96 views

Shrinking log files on development

I've been looking at getting some disk space back on some of our development machines. These are machines that are not being backed up, not being developed on directly, and not being maintained ...
2
votes
1answer
102 views

First log backup after FULL taking lots of space

In the backups I'm doing in my database, the first LOG backup I do after the FULL backup is taking too much space, even more than the full backup. For example: 4:50 AM: FULL BACKUP - .bak 7.2GB ...
0
votes
1answer
82 views

Log file shrink attempts are futile

I have got a question relating to SQL server log files in a production environment, however what I am trying to do is first run some testing on a smaller Test Database (E10Test) before I move on to ...
4
votes
2answers
89 views

How to estimate rate of Trans Log usage

We have a moderately sized database (about 500GB) that we're going to switch from Simple to Full Recovery, with Trans Log backups every 15 minutes. Before we make the switch, I want to get an estimate ...
2
votes
1answer
251 views

how to reinitialize log shipping?

Here is the situation: DB on Server A had the transaction log shipping configured and uses Server B as secondary. It has been working well for a long time. However, we recently detected that one of ...
2
votes
1answer
70 views

Change recovery mode and enforce a transaction log backup?

I am going to do a special data deletion operation - once and during a maintenance with no user access (Sql 2008 r2). The result is a large deletion of millions of blob data from a table by ...
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vote
2answers
344 views

Switching to Simple Recovery - shrinking transaction logs

Standard disclaimer: I am an "involuntary DBA" (a nice phrase I saw in this article) and have done lots and lots and lots and lots and lots of reading on this subject, but am still ...
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0answers
83 views

Transactional Replication issue due to big Transaction Log in sql server 2008 r2

I want an answer of question and that would be highly appreciated Scenario: First of all i am an IT guy from Sports Field and using SQL Server 2008R2. I have 2 production servers server 1 and Server ...
2
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1answer
83 views

Backing up to Nul on an SQL Mirror

I've seen and read a lot of questions about the transaction log and I know that backing it up to nul is usually frowned upon, however my understanding is that this is from a data recovery perspective. ...
5
votes
1answer
67 views

Online clustered index rebuild using more log space than expected

I have a table TableA ID PK BIGINT TrxID BIGINT CardBalance INT AccountBalance INT SP_SPACEUSED 'TableA' output: name rows reserved data index_size unused TableA 904054184 ...
8
votes
3answers
176 views

Poor cardinality estimate disqualifies INSERT from minimal logging?

Why is the second INSERT statement ~5x slower than the first? From the amount of log data generated, I think that the second is not qualifying for minimal logging. However, the documentation in the ...
2
votes
1answer
102 views

How is my database being backed up?

I'm using SQL Server 2008 R2. Someone else set everything up. I encountered an error today: Autogrow of file 'ASPState_log' in database 'ASPState' was cancelled by user or timed out after 1748 ...
2
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0answers
91 views

Log file Zeroing

During the creation of the database, I am getting below mentioned information about log file zeroing and I have highlighted my understanding in bold fonts. 2015-08-23 12:42:36.850 spid51 ...
3
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1answer
91 views

Availability Group log_reuse_wait = Replication

We have a SQL 2014 Availability Group with 3 replicas of our primary database - 2 in our main data center and 1 in our DR center. We did a large index rebuild on the primary which obviously needs to ...
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3answers
409 views

shrink database in always on availability

hi i was using this query for shrinking the database log file USE Tfs_CoE; GO ALTER DATABASE Tfs_CoE SET RECOVERY SIMPLE; GO DBCC SHRINKFILE (Tfs_CoE_Log, 1); GO ALTER DATABASE Tfs_CoE SET RECOVERY ...
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60 views

How to free up disk space on a drive which has BiztalkMsgBoxDB_log file in it

I have been asked to analyze a issue regarding one of the biztalk servers. I was asked to free up space on a particular drive, where I found the only file BiztalkMsgBoxDB_log.bak is taking up close ...
5
votes
1answer
524 views

Can't restore SQL Server db from full backup, log processing fails, database in 'restoring' state

I am trying to set up a database for development purposes on my PC's local SQL Server Developer Edition 12.0.2000.8. I've got a full database backup and separate transaction-log-only backup files ...
2
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2answers
34 views

Random and constant “Log Growths” Alerting, how to make it stop?

I've set up alerting on all my database servers and every once in awhile I'll get the following error, sometimes it goes on and on and on, other times it'll be a few times here and there. The SQL ...
5
votes
2answers
322 views

SQL Server log file used pecentage does not drop after multiple backups

SQL Server 2005 I ran "dbcc SQLPerf(logspace)", then took two log backups, and ran "dbcc SQLPerf(logspace)" again. No change from 48.55% used, even though "dbcc opentran (foo)" says that there are no ...
6
votes
1answer
80 views

Size of individual transactions in log file

is there a way to find out the size of transactions from the transaction log by looking at the log file in SQL Server 2008? I do have an unexpected bloat of my logfile from some maintenance jobs which ...
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2answers
296 views

How are these two SQL Server rollbacks different?

In SQL Server 2008 R2, how are these two rollbacks different: Run an ALTER statement, for a few minutes, and then hit 'Cancel Executing'. It takes a few minutes to rollback completely. Run the same ...
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1answer
42 views

Mysql: How does a rollback operation be performed inside InnoDB

I would like to hear in simple words Please answer me in simple words to the question on the below scenario. ============== Engine: Innodb Trx1 : started and a DML is executed at 10:00 AM and rolled ...
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1answer
18 views

Optimal time interval for scheduling of Transaction Log Backup

I have a database which is currently of size 50 MB. The database is bound to grow by 10 to 15 MB per hour and the data is important. So, I wanted to ask what should be the optimal time interval in ...
2
votes
2answers
149 views

Disk size and log file growth during upgrades

I have four SQL Server databases. Per the maximum load requirements, each database file can be between 1 and 2 TB in size. The HDD is a multi-disk DAS with about 9TB of space. During a database ...
2
votes
3answers
3k views

How can I reduce the Initial Size of a LOG file?

I've inherited a SQL Server 2008r2 database; the Data file was created with an initial size of 1,000 mb, but the Transaction Log has an initial size of 28,016 mb. No backups were being performed. ...
3
votes
1answer
276 views

How to get the daily amount of committed transactions on a given MSSQL database?

The number of transactions for the current connection can be obtained with @@TRANCOUNT. How can you get a daily counter of the globally committed transactions on a given database?
3
votes
3answers
2k views

Restore a large number of transaction logs

I'm using SQL Server 2008 R2, and I need to restore 36 .trn logs to a database. I have restored the first 4 using the restore transaction log functionality in SSMS (right-click database > tasks > ...
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1answer
61 views

Safe delete Transaction Log in SQL Mirroring scenario

We are using SQL Server Mirroring with a witness (High Safety mode) and we see the transaction log on the Principal Server has grown around 20 GB in few weeks. I looked around on SO and google for ...
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0answers
249 views

Could not redo log record on mirror

One of my database mirrors is in the suspended state today and the error log on the mirror shows the following. Could not redo log record (338934:102862:477), for transaction ID (0:848150408), ...
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0answers
17 views

Options for reducing transaction log size when disk space is restricted [duplicate]

I have a very unfortunate situation in which I have some SQL Server (standard edition) databases living on a small (~120gb) disk, and a transaction log which has grown to 50gb+. Unfortunately, the ...
3
votes
1answer
527 views

Unable to shrink log file due to snapshot replication

Our database log (SQL Server 2008 R2) is growing too big, and truncating it via DBCC SHRINKFILE doesn't work (the database is set to simple recovery mode). A bit of background. I released some ...
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1answer
49 views

What transaction logs are for

I'm confused about tranasaction logs for SQL Server. I was under the impression they can be used to roll the database forward. For example say I made a software release on Sunday, I added three new ...
2
votes
0answers
95 views

Transaction log bloat when writing to table on replicated database with parameterized filter

We are observing abnormally large log writes whenever we update a table that is used for parameterized filter in a merge replication. There are a number of join filters as well. When executing a ...
4
votes
1answer
186 views

SQL Server 2012 mirror setup - how to reduce transaction log files [duplicate]

We just upgraded our Windows Server 2003\SQL Server 2005 setup to Windows Server 2012/SQL Server 2012. Both configurations have a mirror with NO witness server. On the old setup the transaction logs ...
0
votes
1answer
56 views

Query trans log or tempdb?

New DBA, all of our databases are SQL 2005. All of our servers run in Simple recovery mode. I work for a school district, where we report student attendance to the state. I run a query to fix ...
0
votes
1answer
370 views

SQL Server Data File/Log File poor performance

I've been asked to look at a database/application server that's "performing slow". No one could really tell me what was performing slow (except for the database backups) so this has been a discovery ...
1
vote
1answer
245 views

fn_dblog not showing up deleted table data

I unintentionally deleted 4 rows from a table. I tried to fetch back the deleted data using a stored procedure (got from internet). However, I was able to see my data in the result of stored ...
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0answers
2k views

INSERT INTO with TABLOCK taking longer than without TABLOCK [closed]

I'm doing something like below to ensure the insert is minimally logged: insert into AnotherDatabase.dbo.HeapTable with (Tablock) ( <column fields ) select <column fields> from ...