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performance tuning

 
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laetcy
GC log - heap tuning

how many time of gc
how long of the test

peek loading

gc pwous time

ISA ( IBM analysior )

5% of gc time

grap

Winky
thread pool
connection pool

graciefrontcontroller

AWR - ADDM

 

DB parameters fine tune

If need to apply

DB db_keep_cache_size 2G

Probably need more memory(below two) allocating, must has twice or more of

DB memory_max_target 4G(at least)
DB memory_target 4G(at least)

WAS setting depence on the DB parameter

WAS JDBC Statement cache size 350
DB   open_cursors 1000(300)

if not

maximum open cursors exceeded

 

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