Borland StarTeam 2009 - Borland Technical Publications

Total MemoryRecommended 10gR2 SettingsRecommended 11g SettingsStatistics level should be TYPICAL orALL.LOG_BUFFER = 524288PGA_AGGREGATE_TARGET = (TotalPhysical Memory * 80%) * 30%30% of the non-OS available memory.This is the starting value.This may needto be adjusted upwards.dedicated machine. Statistics levelshould be TYPICAL or ALL.LOG_BUFFER = 5242882 GB4 GBSGA_TARGET = (Total PhysicalMemory * 80%) * 60%We assume that 20% of the totalmemory will be used by the OS.Statistics level should be TYPICAL orALL.LOG_BUFFER = 1048576PGA_AGGREGATE_TARGET = (TotalPhysical Memory * 80%) * 30%We assume that 20% of the totalmemory will be used by the OS. This isthe starting value. This may need to beadjusted upwards.SGA_TARGET = (Total PhysicalMemory * 80%) * 60%We assume that 20% of the totalmemory will be used by the OS.Statistics level should be TYPICAL orALL.LOG_BUFFER = 1048576PGA_AGGREGATE_TARGET = (TotalPhysical Memory * 80%) * 30%We assume that 20% of the totalmemory will be used by the OS. This isthe starting value. This may need to beadjusted upwards.MEMORY_TARGET = Total PhysicalMemory * 75%We assume that 20% of the totalmemory will be used by the OS and thatthe Oracle instance is running on adedicated machine. Statistics levelshould be TYPICAL or ALL.*LOG_BUFFER = 1048576MEMORY_TARGET = Total PhysicalMemory * 75%We assume that 20% of the totalmemory will be used by the OS and thatthe Oracle instance is running on adedicated machine. Statistics levelshould be TYPICAL or ALL.LOG_BUFFER = 1048576Table 2: Database parameters based on total memoryOracle Database Monitoring and TuningThe most efficient way to tune your oracle database is to start with the recommended database settings andmonitor the instance using the advisories. In addition to that, Borland recommends the use of AutomaticWorkload Repository (AWR) to collect performance statistics, including wait events used to identify performanceproblems. A detailed description of AWR is beyond the scope of this document. Please refer to your Oracle10g performance tuning guide for more information.Oracle Database Tuning | 113