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Oracle Memory Parameters


Oracle Memory Parameters With Oracle Database 11g’s Automatic Shared Memory Management (ASMM) feature, the management of Oracle’s various memory parameters has essentially come down to setting one parameter. And if there were no more 9i or 10g databases out there, or if all applications used memory in the optimal way, memory management would be simple. However, just as some SQL Server 2000 and 2005 servers are still in use, earlier versions of Oracle remain in service. So, you do need

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SGA: System Global Area in Oracle


System Global Area The System Global Area (SGA) is typically a very large memory area shared by all Oracle processes. It is divided into distinct areas such as the buffer cache, the shared pool, and the log buffer, whose sizes are specified in the database configuration file (pfile or spfile). The various Oracle processes coordinate their access to these areas by using an interprocess communication (IPC) mechanisms called latches. Buffer Cache Typically, the buffer cache is the largest portion of

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