Solved

simple versus full recovery model sql

Posted on 2015-01-27
1
95 Views
Last Modified: 2015-01-27
I was having a problem with transaction log files growing too large until I got the transaction log files
backing up with a database in the full recovery model.

Question....
if a database is set to a simple recovery model... will the transaction logs automatically be truncated without them being backed up?

how does a simple recovery model utilize the transaction logs... are they used at all?

also, shouldn't system databases be set to a simple recovery model in most cases?  I have some with the full recovery model selected
0
Comment
Question by:jamesmetcalf74
[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
1 Comment
 
LVL 69

Accepted Solution

by:
Scott Pletcher earned 500 total points
ID: 40573984
>> if a database is set to a simple recovery model... will the transaction logs automatically be truncated without them being backed up? <<

Yes.  Logs will be truncated at every checkpoint (every few mins).  But not shrunk: you must explicitly shrink files in SQL Server, it never does that automatically (unless you set autoshrink on, which you should never do).


>> how does a simple recovery model utilize the transaction logs... are they used at all? <<

Yes.  SQL always requires a log file to provide the ACID properties of a transaction, that is, to ensure "all or nothing" transactions, which includes rollback capabilities.


>> also, shouldn't system databases be set to a simple recovery model in most cases? <<

Yes.  Master, model and tempdb should always be simple.  Msdb can be simple or full, whichever you prefer.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

A Stored Procedure in Microsoft SQL Server is a powerful feature that it can be used to execute the Data Manipulation Language (DML) or Data Definition Language (DDL). Depending on business requirements, a single Stored Procedure can return differe…
Recently we ran in to an issue while running some SQL jobs where we were trying to process the cubes.  We got an error saying failure stating 'NT SERVICE\SQLSERVERAGENT does not have access to Analysis Services. So this is a way to automate that wit…
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…
Via a live example, show how to set up a backup for SQL Server using a Maintenance Plan and how to schedule the job into SQL Server Agent.

635 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