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INSTANCE_MEMORY AUTOMATIC should be automatic, not calculated
The default value of the INSTANCE_MEMORY parameter is AUTOMATIC. The AUTOMATIC setting results in a value that is computed at database partition activation. This behavior is inflexible regarding dynamic memory changes e.g. for AIX LPARs. Today it is possible to change the memory of a logical partition (LPAR) without stopping and starting the LPAR. Db2 does not recognize the increased available memory and will continue to limit the used memory which was calculated at instance startup. Db2 should detect memory changes automatically and adjust INSTANCE_MEMORY automatically.
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