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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
Reserved Size
Identifying High Use Packages
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
Intro Tuning Oracle Locks
Oracle Locking Scheme
Shared Exclusive Locks
Oracle Lock Modes
Database Deadlocks
Preventing Database Deadlocks
Dictionary Lock Views
Lock Utility Scripts
DBMS Lock Package
Tuning Oracle Locks Conclusion
Redo Log Buffer - Exercise
Tuning Considerations of Redo log buffer
Objective:
Describe typical performance problems related to the Oracle SGA.
Exercise Scoring
This exercise is worth a total of 12 points total, four points for each correct answer. To receive full credit, you will need to respond to the three questions below and submit your answers.
Instructions
In this module you have learned about the main components of the SGA and some of the basic tuning issues related to these components. Based on what you know so far, describe some of the performance problems you would expect to encounter for each area of the SGA.
Question 1
What are two examples of performance problems would you expect to come from components of the shared pool? How would you address these problems?
Question 2
What is one kind of performance problem that you would expect to originate in the redo log buffer? How would you address this problem?
Question 3
Describe a performance problem that might occur in the data buffer cache. How would you address this problem?
Submitting your exercise
Once you have entered your responses into the text boxes, click
Submit
to submit the exercise.
Remember that you must submit all your responses to this exercise at the same time.