Database Optimization & Maintenance
Tim Richard
Agenda
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SQL Configuration
OnBase DB Planning
Backups
Integrity
Optimization
Tips and Recommendations
2013 ECM Training Conference
#dbwestECM
SQL Server: Databases
• Five system databases on a
SQL Server instance
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master
model
msdb
TempDB
Resource database
2013 ECM Training Conference
#dbwestECM
System Database Recommendations
• Pre-size TempDB and the transaction log
• Create multiple files for TempDB
• Resist shrinking the database
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SQL Server Configuration
• Parallelism
• Memory
• TempDB
– Create multiple files
• ODBC drivers
– Verify client version vs. server
– Verify most recent version
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Agenda
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SQL Configuration
OnBase DB Planning
Backups
Integrity
Optimization
Tips and Recommendations
2013 ECM Training Conference
#dbwestECM
The OnBase DB
• What information does it store?
– Critical component in an OnBase solution
• Data
• Performance
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Before you create the database…
• Where should the files be located?
– This is a business decision
– If you’re not sure where to put them…
• Refer to the Database Installation Guide on Community
• Where should the files ideally be located?
– On drives that can provide the necessary response time (1-5
ms log writes, > 10 ms data writes)
– RAID 1+0, 15K
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Sizing
• Sizing guide from DRG
• Check existing utilization
– Pay attention to size on disk vs. % utilized
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DBSpace
Percentage of total
DBSpace1
33
DBSpace2
7
DBSpace3
4
DBSpace4
0
DBSpace5
0
DBSpace6
6
DBSpace7
1
DBSpace8
1
DBSpace9
9
DBSpace10
6
DBSpace2i
6
DBSpace3i
9
DBSpace6i
7
DBSpace9i
11
Estimating Database Size
Hyland Customer DB Size
• Small
< 20 GB
< 10,000,000 documents
• Medium/Large
< 100 GB
< 100,000,000 documents
• Enterprise
> 100 GB
> 100,000,000 documents
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Auto-File Growth Settings
• What should File Growth be for each DBSpace?
– 5 for 3*, 4, 5, 3i*
– 100 for 7, 8
– 512 for 1, 2, 6, 9, 10, 2i, 6i, 9i
#dbwestECM
Agenda
•
•
•
•
•
•
SQL Configuration
OnBase DB Planning
Backups
Integrity
Optimization
Tips and Recommendations
2013 ECM Training Conference
#dbwestECM
Backups: what you need to know first
• Evaluate your current backup process
– How often are backups taken (full, diff, log)?
– Where are copies stored on site?
– Where are copies stored off site?
– How often are tapes/disks/etc. rotated?
#dbwestECM
Backups: what you need to know next
• Determine your recovery strategy
– RPO = Recovery Point Objective
– RTO = Recovery Time Objective
– Do you need High Availability?
• Establish a SLA
• Test, test, test, and then test again
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Backup Tasks
• When was last backup?
• When was last transaction log backup?
• Creating a backup
– Full vs. differential vs. log
• Set up a maintenance plan
• Restore the backup
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Agenda
•
•
•
•
•
•
SQL Configuration
OnBase DB Planning
Backups
Integrity
Optimization
Tips and Recommendations
2013 ECM Training Conference
#dbwestECM
Integrity checks: what you need to do
• Create a job to check integrity on a regular basis
• Create alerts to monitor for errors:
– 823: Page not read
– 824: Torn page
– 825: Impending trouble
• Regularly check hardware for problems
#dbwestECM
Integrity Tasks
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Run CHECKDB
Page verify option
Set up a maintenance plan
Set up alerts
#dbwestECM
Agenda
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•
•
•
•
•
SQL Configuration
OnBase DB Planning
Backups
Integrity
Optimization
Tips and Recommendations
2013 ECM Training Conference
#dbwestECM
Optimizations: what you need to do
• Rebuild indexes on a regular basis
• Update statistics with 100% sample
• Update index statistics AND column level
statistics
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Updating Statistics
• As part of Index Rebuilds
– Only updates index statistics
– 100% sample
• Automatically
– When 20% of the rows + 500 change
– Not 100% sample
– Enables query optimization in 2005 & 2008*
• Manually (UPDATE STATISTICS or sp_updatestats)
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Optimization Tasks - Fragmentation
• Rebuild
– >40% fragmentation
– Offline
• Reorganize
– >10% and <40% fragmentation
– Online
• Typically fragmented tables
– Itemdata10
– Itemlc
– Keyword tables
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Optimization Best Practices
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Rebuild indexes regularly
Use 100% sample for statistics
Differences in SQL 2000 vs. 2005/2008
Revisit maintenance plans
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Agenda
•
•
•
•
•
•
SQL Configuration
OnBase DB Planning
Backups
Integrity
Optimization
Tips and Recommendations
2013 ECM Training Conference
#dbwestECM
User’s Role in Performance
• Database is a shared resource
– Each activity consumes part of the resource
• Best Practice for User Searches
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Retrieve < 100 documents
Selective search criteria
Use Keywords and Dates
Avoid Leading Wildcards
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Suggestions
• Keyword creation
– Smart keywords, use Keyword Type Groups if possible
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Educate users on negative effects of actions
Be cautions with API programs/VB Scripts (performance)
Utilize Custom Queries
Disable Document List Refresh
Enable Document Type Query Restrictions
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More Suggestions
• Setup required keyword for retrieval
• Enable option to select user range of batches in Committed
queues
• Security Keywords
– EQUAL vs. NOT EQUAL
– Perform Security Keyword Checking During Database Query
• Other Database Settings (Utils)
• Tuning Parameters (Client and ini file)
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Thank You!