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Field / Description
Tuning Formula or Default Value
(Default value is provided if there is no
tuning formula)
Initial Size of New (Nursery) Heap (MB)
Controls the initial size of the new heap area
allocated to each server JVM.
It is used with the throughput/parallel
collector instead of the JVM built-in tuning
the parameter provides.
Based on your operating system and
architecture, the parameters are provided in
the following list:
v HP-UX 32-bit: (HP-UX.INIT_AGE)
v HP-UX 64-bit: (HP-UX-64.INIT_AGE)
v IBM AIX 32-bit: (AIX.INIT_AGE)
v IBM AIX 64-bit: (AIX-64.INIT_AGE)
v Sun Solaris 32-bit: (SunOS.INIT_AGE)
v Sun Solaris 64-bit: (SunOS-64.INIT_AGE)
v Linux 32-bit: (Linux.INIT_AGE)
v Linux 64-bit: (Linux-64.INIT_AGE)
v Windows 32-bit: (Windows.INIT_AGE)
v Windows 64-bit: (Windows-64.INIT_AGE)
v IBM iSeries OS/400: (OS400.INIT_AGE)
v IBM OS/390: (OS390.INIT_AGE)
tuning.properties Property:
[operating system].INIT_AGE
(0.33333 * Initial size of heap memory
allocated to the server node)
AIX 64-bit: AIX-64.INIT_AGE=256
Linux 64-bit: Linux-64.INIT_AGE=256
Windows 32-bit:
Windows.INIT_AGE=round(0.33333 *
Windows.INIT_HEAP)
HP 64-bit: HP-UX-
64.INIT_AGE=round(0.33333 *
HP-UX-64.INIT_HEAP)
Sun 64--bit: SunOS-
64.INIT_AGE=round(0.33333 *
SunOS-64.INIT_HEAP)
Windows 64-bit: Windows-
64.INIT_AGE=round(0.33333 *
Windows-64.INIT_HEAP)
Performance Management 133