IBM User Guide for Java V7 on Windows > Troubleshooting and support > Using diagnostic tools > Using dump agents

Default dump agents

The JVM adds a set of dump agents by default during its initialization. You can override this set of dump agents using -Xdump on the command line.

See Removing dump agents for more information.

Use the -Xdump:what option on the command line to show the registered dump agents. The sample output shows the default dump agents that are in place:

java -Xdump:what

Registered dump agents
----------------------
-Xdump:system:
    events=gpf+abort+traceassert+corruptcache,
    label=c:\user\core.%Y%m%d.%H%M%S.%pid.%seq.dmp,
    range=1..0,
    priority=999,
    request=serial
----------------------
-Xdump:system:
    events=systhrow,
    filter=java/lang/OutOfMemoryError,
    label=C:\user\core.%Y%m%d.%H%M%S.%pid.%seq.dmp,
    range=1..1,
    priority=999,
    request=exclusive+compact+prepwalk
----------------------
-Xdump:heap:
    events=systhrow,
    filter=java/lang/OutOfMemoryError,
    label=c:\user\heapdump.%Y%m%d.%H%M%S.%pid.%seq.phd,
    range=1..4,
    priority=500,
    request=exclusive+compact+prepwalk,
    opts=PHD
----------------------
-Xdump:java:
    events=gpf+user+abort+traceassert+corruptcache,
    label=c\user\javacore.%Y%m%d.%H%M%S.%pid.%seq.txt,
    range=1..0,
    priority=400,
    request=exclusive+preempt
----------------------
-Xdump:java:
    events=systhrow,
    filter=java/lang/OutOfMemoryError,
    label=c:\user\javacore.%Y%m%d.%H%M%S.%pid.%seq.txt,
    range=1..4,
    priority=400,
    request=exclusive+preempt
----------------------
-Xdump:snap:
    events=gpf+abort+traceassert+corruptcache,
    label=c:\user\Snap.%Y%m%d.%H%M%S.%pid.%seq.trc,
    range=1..0,
    priority=300,
    request=serial
----------------------
-Xdump:snap:
    events=systhrow,
    filter=java/lang/OutOfMemoryError,
    label=c:\user\Snap.%Y%m%d.%H%M%S.%pid.%seq.trc,
    range=1..4,
    priority=300,
    request=serial
----------------------

Parent: Using dump agents

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