PK17716: USER IS ALLOWED TO CONFIGURE THE RING BUFFER TRACE WITH VALUES THAT CAN CAUSE AN OUTOFMEMORY CONDITION IN THE JVM. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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APAR status Closed as fixed if next. Error description Configuration of the ring buffer trace allows for values that cause an OutOfMemory condition of the JVM. The combination of how verbose a trace string can be, together with the size of the buffer ( X thousand entries ) can grow to a large memory requirement from the heap. A warning message or a pre-calculation of the ring buffer size in comparison to the total JVM heap would safeguard the customer from unknowingly straining the JVM or in worst cases cause an OutOfMemory condition.Local fix naProblem summary **************************************************************** * USERS AFFECTED: Users of the circular trace buffer in * * WebSphere Application Server. * **************************************************************** * PROBLEM DESCRIPTION: The circular buffer can be configured * * to hold a large number of objects * * which can then cause all memory to be * * allocated and crash the JVM with an * * OutOfMemoryError. * **************************************************************** * RECOMMENDATION: * **************************************************************** In future releases the circular buffer will hold on to a serialized form (a binary representation) of logging entries and the size will be configurable in bytes. This will prevent running out of memory. The latest release of the product to exit development at the time this APAR was closed was: WebSphere Application Server version 6.0.2.Problem conclusion Temporary fix Comments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros Publications Referenced
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Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > General
Operating system(s):
Software version: 00A
Software edition:
Reference #: PK17716
IBM Group: Software Group
Modified date: Jan 16, 2006
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