Solution : https://service.sap.com/sap/support/notes/1408259 (SAP Service marketplace login required)
Key words : 
retrieve complete gc history file=<filename>, jce jurisdiction policy files enabling, compilation half-life time, spurious wakeups denoting wakeups, terms glibc malloc bug, hp-ux/pa-risc64, default filename 'thread_dump_@pid', actual file exceeds -xx, single thread dump exceeds, java thread dumps listing
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| 1025085 | How to manually patch the SAPJVM |