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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How to find what frequent and/or large transaction have taken place in MS SQL Server?

Each day is experiencing about 1GB sum total of all the transaction log backups that day, while at the end of that week the Full DB backup is about 180MB. For a business database for buying/selling ...
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48 views

Log Sequence Numbers in Full BackUp and Log Backup

My full back-up starts daily at 02:00 AM. It takes about 3 hours. I also take T-Log back-ups every 15 minutes (at 15,30,45 and 00 hours). I can verify the LSN sequences of T-log backups when I ...
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1answer
320 views

Issue shrinking dev sql server DB's log file

I have a development db that's running on sql 2014 in 2012 compatibility that I'm having an issue with trying to shrink the log file. The mdf is 60+gb and the log is 80+gb but since it's dev like ...
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1answer
558 views

SQL Server Troubleshooting Replication and Long-Running fn_dblog query

I am trying to get (pull) Transactional Replication working again for a subscriber. Currently, in Replication Monitor I am seeing messages in the Publisher to Distributor tab and the Distributor to ...
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1answer
2k views

TempDB Log Space and ACTIVE_TRANSACTION

Our monitoring solution (SCOM) is currently flagging that the tempdb log is running out of space. However we have auto grow set to 1GB chunks for the log and we have 25GB of space left on the drive. ...
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1answer
67 views

What is the best storing device for DB transaction log?

I'm using MySQL with InnoDB storing engine. Transactional log is placed to dedicated HDD. Still as it is HDD atopsar shows big load (>50%) to this HDD because of big amount of small IOs (about 50 ...
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1answer
2k views

DBCC loginfo contains thousands of VLF entries with status 2

I've inherited this huge SQL Server 2000 prod database and suddenly the transaction log ran out of space. The transaction log gets backed up every hour but I think over the weekend some existing jobs ...
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1answer
24 views

DB2 ROLLFORWARD option “TO END OF LOGS” - does it read archive logs?

I read about ROLLFORWARD option on link http://www-01.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.admin.cmd.doc/doc/r0001978.html?cp=SSEPGG_9.7.0%2F3-6-2-4-106 but I could not find ...
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27 views

DB2 Transaction Logs - can they be COPY-PASTE on another Disaster Recovery Server?

We have Server1 with Online Backup1, Archive Logs 1,2,3 for example and Transaction Logs from 1 to 10. We are interested in next scenario: If Server1 fails completely and we want to move everything ...
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1answer
59 views

DB2 big strange problem - database is returned to CIRCULAR mode but archive logs keep coming to old archive location

my DB2 database (v 9.7) is in Circular mode. Current Logging Type:Circular (USEREXIT) = OFF (LOGRETAIN) = OFF (LOGARCHMETH1) = OFF (LOGARCHMETH2) = OFF (LOGPRIMARY) = 10 (LOGSECOND) = 10 Path to log ...
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83 views

Too much IO to MySQL InnoDB log files

I am using MySQL version: 5.5.38 I have dedicated HDD to InnoDB log files using innodb-log-group-home-dir option. atopsar -d 30 shows big load (>50%) to this HDD The thing is that I have only 75 ...
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Why does shrinking the transaction log generate lots of log (LOP_SHRINK_NOOP) and not shrink the log?

I just tried shrinking an overly big log file (FULL recovery model). This operation is not expected to always succeed and indeed the log was not shrunk. But I observed that a lot of new log was ...
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0answers
72 views

Breaking up large transaction - worth it?

I'm in charge of monitoring the performance of an industrial chemistry process. Every hour, a process gathers 50 million rows from various subsystems and feed into the central database. The whole ...
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0answers
76 views

Alternatives to log shipping / Replicate a local SQL Server database on a remote DB accesible only by IP

I'm trying to replicate a local SQL Server 2008R2 DB to a remote DB instance accessible only by IP (specifically, a RackSpace cloud site DB). I believe log shipping is ideal, since the remote only ...
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0answers
5k views

Transaction log full due to log_backup

I am testing how certain operations are logged under different recovery models.Below are steps i have did till now 1.create database in full recovery model 2.take backup 3.create a table and insert ...
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384 views

Log shipping on secondary server

Log shipping fails with the below error. Sql agent on secondary server has access to the folder and files in security. It is not a firewall issue. I created the jobs using the LS scripts as it fails ...
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34 views

Partitioning large table requires lots of extra disk space: does switching recovery model help?

We are in the process of implementing partitioning on a SQL Server 2012 database. It worked fine in our environment, but in the client environment we ran out of disk space. The entire database was ...
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30 views

Tran Log file growing even after log backups and Log shipping configured

I have log shipping configured for a database in sql server 2005 with below details: A) Database X hosted on primary: Log backup every 1 hour as scheduled in LS Backup job: Data file: 40 GB and Log ...
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24 views

Controlling SQL Backups From Two Machines

I'm far from a DBA, and don't really have a great understanding of backup chains, but I was asked the following question by a network administrator, and wanted to be sure that my answer was correct. ...
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62 views

Availability Groups, Log File Backups and Recovering the Secondary

I am currently working on ironing out some kinks in a testing setup for our large (1.5TB+) database in an Availability group and have a few things I need some help with. Setup I have a two node ...
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278 views

Log full and an Active_transaction on database

I have limited access to this server eg I cannot SELECT * FROM sys.dm_tran_session_transactions for example I, perhaps foolishly, ran this query to insert some test data... begin transaction update ...
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86 views

Maintenance Plan Transaction Log Backup

I have a backup device set for my transaction log so the sets are contained in 1 file. I have this set to append, is this correct or should it be overwrite in the plan? After the full backup is taken ...
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Lock rows for long running transactions

I have a question table from which agents try to answer 5 questions at a time. Obviously, I want to avoid agent collision i.e. if an agent is answering a question, other agents can not work on it. Is ...