Configure the Streams pool for integrated Replicat:
When using integrated Replicat the Streams pool must be configured.
If we are using non-integrated Replicat means the Streams pool is not necessary.
The shared memory that is used by the servers comes from the Streams pool portion of the System Global Area (SGA) in the database. Therefore, you must set the database initialization parameter STREAMS_POOL_SIZE high enough to keep enough memory available for the number of Extract and Replicat processes that you expect to run in integrated mode. Note that Streams pool is also used by other components of the database (like Oracle Streams, Advanced Queuing, and Datapump export/import), so make certain to take them into account while sizing the Streams pool for Oracle GoldenGate.
The size requirement of the Streams pool for integrated Replicat is based on a single parameter, MAX_SGA_SIZE. The MAX_SGA_SIZE parameter defaults to INFINITE which allows the Replicat process to use as much of the Streams pool as possible. Oracle does not recommend setting the MAX_SGA_SIZE parameter.
Set the STREAMS_POOL_SIZE initialization parameter for the database to the following value:
(1GB * # of integrated Replicats) + 25% head room
For example, on a system with tw0 integrated Replicat process the calculation would be as follows:
(1GB * 2) * 1.25 = 2.5GB STREAMS_POOL_SIZE = 2500M
For example, on a system with three integrated Replicat process the calculation would be as follows:
(1GB * 3) * 1.25 = 3.75GB STREAMS_POOL_SIZE = 3750M
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