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What are the advantages of dump and load?

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EnvironmentProduct: OpenEdge
Version: All supported versions
OS: All supported platforms
Question/Problem Description
What are the advantages of dump and load?
What are the benefits of a dump and load?
How to recapture some space from a database?
Why should I dump and load?
What reasons are there for dumping and loading a database ?
Can I change from Unix to Windows with a dump and load?
Can I change from Windows to Unix with a dump and load?
Can I change my OS with a dump and load?
Steps to Reproduce
Clarifying Information
Error Message
Defect/Enhancement Number
Cause
Resolution
Some of the reasons to dump and load are:

1. If you are experiencing performance degradation and are finding that the database management appears to be taking up more time than it should, "dump and load" is a routine maintenance procedure that should be undertaken from time to time.

2. To economize disk space. This action tends to cause records for the same table to be clustered together in blocks and for those blocks to be contiguous on disk. Sequential access is improved greatly and on reloading, the least scatter will result by loading the data for the table with the smallest average record size first and the table with the largest average record size last.

3. When creating a new version of a database

4. When migrating a database to a different version of Progress and/or a different operating system platform

5. When Loading updated data definitions to upgrade a database schema

Once this operation has been completed it is advisable to Baseline the "scatter factor" (through TABANALYS). This will assist in future decision making (eg: performance degradation) as to when it's time to dump and load again.
Workaround
Notes
References to Written Documentation:
Progress Solutions:
P25106, Why dump/load is improving performance
Attachment 
Disclaimer

The origins of the information on this site may be internal or external to Progress Software Corporation (“Progress”). Progress Software Corporation makes all reasonable efforts to verify this information. However, the information provided is for your information only. Progress Software Corporation makes no explicit or implied claims to the validity of this information.

Any sample code provided on this site is not supported under any Progress support program or service. The sample code is provided on an "AS IS" basis. Progress makes no warranties, express or implied, and disclaims all implied warranties including, without limitation, the implied warranties of merchantability or of fitness for a particular purpose. The entire risk arising out of the use or performance of the sample code is borne by the user. In no event shall Progress, its employees, or anyone else involved in the creation, production, or delivery of the code be liable for any damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss) arising out of the use of or inability to use the sample code, even if Progress has been advised of the possibility of such damages.



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