Home > Ask the Oracle Database / Applications Experts > Oracle database design and architecture Questions & Answers > RMAN vs. dbverify utility
Ask The Oracle Expert: Questions & Answers
EMAIL THIS

RMAN vs. dbverify utility

Brian Peasland EXPERT RESPONSE FROM: Brian Peasland

Pose a Question
Other Oracle Categories
Meet all Oracle Experts
Become an Expert for this site


Oracle tips, scripts, and expert advice
Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us    Add to Google


>
QUESTION POSED ON: 26 September 2005
This is in regards to "Input/Output errors" (31 Aug 05). You mentioned the use of the dbverify utility to check for errors in a datafile in this discussion.

Can we not also use RMAN to detect corrupt blocks and also to spot bad spots on disks? If we can use RMAN to cover both the above cases, what is the advantage/disadvantage of using RMAN vs. dbv? Thanks.


>
RMAN can be used to detect block corruption when performing a backup. There are also initialization parameters (like DB_BLOCK_CHECKING) which will detect block corruption on block access. There is nothing wrong with using these two techniques for detecting block corruption. The dbverify utility will check the entire datafile for block corruption on demand. You can fire up the dbverify utility and have it verify the datafile. Or, you can ensure that you perform a datafile backup with RMAN or read each and every block in the datafile with SQL statements for the other two options. Personally, when I need to verify blocks, it is easier to fire up one utility (dbv) to determine if corruption exists. The other two methods are primarily used to determine block corruption at other times so as to catch it as early as possible.


Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us    Add to Google



RELATED CONTENT
Oracle database design and architecture
Why am I receiving Oracle memory allocation errors?
How to join two tables with unique keys in Oracle
How does the Oracle LGWR write to online redo log files?
Can I check an Oracle instance without logging into the Oracle server?
How to use V$SEGMENT_STATISTICS to find the most accessed Oracle table
Can I install an Oracle client on Windows 7?
How to use the Oracle Database Upgrade Assistant (DBUA)
Can I specify Oracle column order in my database table?
Can I have a single Oracle 11g RAC instance across multiple databases?
How to use the Oracle export utility to duplicate database structure

Oracle database backup and recovery
Can I perform an Oracle server backup through a client machine?
How to execute DML in an Oracle trigger with EXECUTE IMMEDIATE
How to restore a dump file with the Oracle SHOW=Y option
Why do I get an Oracle not available error with Oracle 8i on Windows?
Oracle tutorial library: SearchOracle.com's learning guides
How to perform Oracle database recovery with a corrupt online redo log
Can I create an Oracle Catalog Database with the Enterprise Console?
Do I need to recreate views after an Oracle table reorg?
Client-based apps vs. web-based apps in Developer 2000
How to perform an Oracle 8i to 10g migration
Oracle database backup and recovery Research

Oracle database design and architecture
Why am I receiving Oracle memory allocation errors?
How to join two tables with unique keys in Oracle
Can I check an Oracle instance without logging into the Oracle server?
How does the Oracle LGWR write to online redo log files?
How to determine your SQL database through needs analysis
Breaking down the contenders in the SQL database market
The MySQL open source database in the enterprise
Diving deeper into the SQL database features
What managers should consider when starting a database scaling project
How to use V$SEGMENT_STATISTICS to find the most accessed Oracle table

RELATED GLOSSARY TERMS
Terms from Whatis.com − the technology online dictionary
E. F. Codd  (SearchOracle.com)
extent  (SearchOracle.com)
flexfield  (SearchOracle.com)
foreign key  (SearchOracle.com)
multidimensional database  (SearchOracle.com)
object-oriented database management system  (SearchOracle.com)
quad tree  (SearchOracle.com)
relational online analytical processing  (SearchOracle.com)
row  (SearchOracle.com)
splay tree  (SearchOracle.com)

RELATED RESOURCES
2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems
Search Bitpipe.com for the latest white papers and business webcasts
Whatis.com, the online computer dictionary



Search and Browse the Expert Answer Center
Search and browse more than 25,000 question and answer pairs from more than 250 TechTarget industry experts.
Browse our Expert Advice



Oracle White Papers: Fusion Middleware
HomeNewsTopicsTipsAsk the ExpertsMultimediaWhite PapersProductsBlogs
About Us  |  Contact Us  |  For Advertisers  |  For Business Partners  |  Site Index  |  RSS
SEARCH 
TechTarget provides technology professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective purchase decisions and managing their organizations' technology projects - with its network of technology-specific websites, events and online magazines.

TechTarget Corporate Web Site  |  Media Kits  |  Site Map




All Rights Reserved, Copyright 2003 - 2009, TechTarget | Read our Privacy Policy 		  TechTarget - The IT Media ROI Experts