If the SymbolGem runs out of memory during the upgrade, it triggers in-memory
GC, but this may be disallowed during certain stages. This resulted in
the SymbolGem crashing with UTL_GUARANTEE.
Changing line 54 in $GEMSTONE/sys/runsymbolgemconv from:
gemTempObjCacheSize="100000"
to:
gemTempObjCacheSize="1000000"
should allow sufficient memory for upgrade.
Last updated: 5/14/14