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Oracle Instance
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Tuning Oracle Instance
Instance Tuning
Main Components SGA
Shared Pool Tuning
Oracle Library Cache
Query Dictionary Cache
Global Area Session
Data Buffer Cache
Redo Log Buffer
Instance Tuning Conclusion
Shared Pool Tuning
Shared Pool Optimal Tuning
Pin Packages Shared Pool
Pinning Supplied Packages
Reserved Size
Tuning Parameters
Identifying High Use Packages
Pinned Packages Output
IIdentify Swapped out Items
Statistics gathered from Startup
Detecting Library Cache Contention
Library Cache Statistics
Reuse SQL Library Cache
Tuning Shared Pool
Data Buffer Cache
Tuning Data Buffer
Calculate buffer Hit Ratio
Non- Full table Scan
Full table Scan
Impact Adding Data Buffers
Predict Amount Spare Memory
Create multiple Buffer Pools
Configure Multiple Buffer Pools
Size Buffer Pools
Monitor Buffer Cache
Use Table Caching
Databuffer Cache Conclusion
Redo Log Tuning
Oracle Redo Logs
Tuning Techniques
View RedoLog Activity
Redo Log Parameters
RedoLog Wait Statistics
RedoLogs Online Size Determination
size Archived RedoLog FileSystem
Tune redo Log Operations
log_checkpoint_interval
RedoLog Tuning Conclusion
Sorting Operations
Oracle Sorting Basics
Sorting Parameters
SQL Join Operations
Monitor for Disk Sorts
Sorting Direct Writes
Temporary Sorting Space
Monitoring Temp Tablespace
Remove SQL Sorts
Sorting Operations Conclusion
Tuning Oracle Locks
Oracle Instance Tuning - Quiz
Each question is worth one point. Select the best answer or answers for each question.
1.
Which of the following is a symptom of a shared_pool_size problem?
Please select the best answer.
A.
A low data buffer hit ratio
B.
A poor library cache hit ratio
C.
A high amount of redo log space requests
D.
A high amount of disk sorts
2.
When you suspect an instance tuning problem, what is the best source of Oracle tuning information?
Please select the best answer.
A.
The Oracle data dictionary tables
B.
The v$ views
C.
The Oracle utilities (bstat-estat)
D.
The OS performance statistics
3.
Which sequence correctly shows types of tuning in the following order: from most important to least important?
Please select the best answer.
A.
SGA tuning, disk I/O tuning, database design tuning, SQL statement tuning
B.
SGA tuning, database design tuning, SQL statement tuning, disk I/O tuning
C.
Database design tuning, disk I/O tuning, SQL statement tuning, SGA tuning
D.
SQL statement tuning, SGA tuning, database design tuning, disk I/O tuning
4.
Which of the following situations cause performance problems for redo log processing? (Please select all that apply.)
Please select all the correct answers.
A.
Redo logs switch 10 per hour
B.
Redo log switch 2 per hour
C.
The database experiences a high value for redo log space requests.
D.
The archived redo log file system becomes full.
