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Environment/Versions STCLive T&D All Versions Answer Reported core file reported out of heap memory when analyzed. Heap memory was increased from 1024 to 2048. 1. cd $METRO_HOME/MetroEngine/utilities/resource 2. vi metroengine.props 3. Change value  From :   JAVA_XMX=1024                                  To :  JAVA_XMX=2048 4. Restart MetroEngine Process cd $METRO_HOME/MetroEngine/scripts ./stopMetroEngine.pl ./statusMetroEngine.pl ./startMetroEngine.pl Below is some data from the analysis from engineering. $ grep "returning NULL" javacore* | cut -d')' -f2-  returning NULL! 40 bytes requested for object of class 000000003004F100 from memory space 'Generational' id=00000100105D3010  returning NULL! 24 bytes requested for object of class 0000000030051000 from memory space 'Generational' id=00000100105D3010  returning NULL! 16 bytes requested for object of class 00000000301F3100 from memory space 'Generational' id=00000100105D3010  returning NULL! 16 bytes requested for object of class 00000000301F3100 from memory space 'Generational' id=00000100105D3010  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ grep "returning NULL" javacore* | cut -d')' -f2-  returning NULL! 40 bytes requested for object of class 000000003004F100 from memory space 'Generational' id=00000100105D3010  returning NULL! 24 bytes requested for object of class 0000000030051000 from memory space 'Generational' id=00000100105D3010  returning NULL! 16 bytes requested for object of class 00000000301F3100 from memory space 'Generational' id=00000100105D3010  returning NULL! 16 bytes requested for object of class 00000000301F3100 from memory space 'Generational' id=00000100105D3010  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ CL  -bash: CL: command not found  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ set -o vi  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ grep "3CLTEXTCLASS.*000000003004F100" javacore* | cut -d: -f2- | sort -u  3CLTEXTCLASS [J(0x000000003004F100)  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ grep "3CLTEXTCLASS.*0000000030051000" javacore* | cut -d: -f2- | sort -u  3CLTEXTCLASS java/lang/String(0x0000000030051000)  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ grep "3CLTEXTCLASS.*00000000301F3100" javacore* | cut -d: -f2- | sort -u  3CLTEXTCLASS org/apache/log4j/CategoryKey(0x00000000301F3100)  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407  $ grep "3CLTEXTCLASS.*00000000301F3100" javacore* | cut -d: -f2- | sort -u  3CLTEXTCLASS org/apache/log4j/CategoryKey(0x00000000301F3100)  cbeitzel@FRK-BBPH9W1 /cygdrive/c/Users/cbeitzel/Documents/ATT/SR01308407