Solved

Bulk insert and transactional log

Posted on 2011-03-09
7
699 Views
Last Modified: 2012-05-11
Hello,

When I execute this query, the transactional log is full but the recovery model is simple, how can I modify this for reduce logging

Bulk Insert ETL.dbo.I$_ETL_Stats_ufac
From  'd:\test.bcp'
With (
  MaxErrors=999999999,
  CodePage='ACP',
  FieldTerminator = '~~',
  RowTerminator = '\n'
 )

Thanks

Regards

bibi
0
Comment
Question by:bibi92
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 32

Expert Comment

by:Ephraim Wangoya
ID: 35089339

Check if you have set a maximum size on the transaction log or if you are actually running out of disk space
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 35089370
It means your Transaction Log is too small for the Bulk Insert and it needs to be increased appropriately.
0
 

Author Comment

by:bibi92
ID: 35089437
Hello, I have always check it, I want to know if it's possible to reduce the logging.

Thanks
0
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

 
LVL 15

Accepted Solution

by:
Aaron Shilo earned 500 total points
ID: 35092929
hi

you can reduce logging if database is in BULK_LOGGING mode
0
 

Author Closing Comment

by:bibi92
ID: 35093471
Thanks regards bibi
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 35094530
>>you can reduce logging if database is in BULK_LOGGING mode <<
If by "BULK_LOGGING mode" you are referring to the Bulk-logged Recovery Model and you are saying that it will log less than Simple Revocery Model, than clearly that is incorrect and you have not done your homework, as I suspect the author will very soon discover.

This is from SQL Server BOL:
Simple Recovery Model
The simple recovery model minimizes administrative overhead for the transaction log, because the transaction log is not backed up. The simple recovery model risks significant work-loss exposure if the database is damaged. Data is recoverable only to the most recent backup of the lost data. Therefore, under the simple recovery model, the backup intervals should be short enough to prevent the loss of significant amounts of data. However, the intervals should be long enough to keep the backup overhead from affecting production work. Including differential backups in the backup strategy can help reduce the overhead.

Generally, for a user database, the simple recovery model is useful for test and development databases or for databases containing mostly read-only data, such as a data warehouse. The simple recovery model is inappropriate for production systems where loss of recent changes is unacceptable. In such cases, we recommend using the full recovery model.

Bulk-logged recovery model
This recovery model bulk logs most bulk operations. It is intended solely as an adjunct to the full recovery model. For certain large-scale bulk operations such as bulk import or index creation, switching temporarily to the bulk-logged recovery model increases performance and reduces log space consumption. Log backups are still required. Like the full recovery model, the bulk-logged recovery model retains transaction log records until after they are backed up. The tradeoffs are bigger log backups and increased work-loss exposure because the bulk-logged recovery model does not support point-in-time recovery.


And here is the kicker you failed to explain to the author (also from BOL):
Important:  
Under the full recovery and bulk-logged recovery models, log backups are essential. If you do not want to take log backups, use the simple recovery model.
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 35094592
And here is more information that was not shared from SQL Server BOL:

If you must switch from the simple recovery model to the full recovery model, we recommend that you:

1. Immediately after you complete the switch to the full recovery model or bulk-logged recovery model, take a full or differential database backup to start the log chain.

The switch to the full or bulk-logged recovery model takes effect only after the first data backup.


2. Schedule regular log backups and update your restore plan accordingly.

Log backups are an integral and fundamental aspect of the full and bulk-logged recovery models. Log backups allow the transaction log to be truncated. If you do not back up the log frequently enough, the transaction log can expand until it runs out of disk space.
0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction SQL Server Integration Services can read XML files, that’s known by every BI developer.  (If you didn’t, don’t worry, I’m aiming this article at newcomers as well.) But how far can you go?  When does the XML Source component become …
Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
Familiarize people with the process of utilizing SQL Server functions from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Ac…
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question