Fixes are available
APAR status
Closed as program error.
Error description
The SIBX Runtime Flow creates a complete tree structure from the flow model. This can lead to numerous duplicated branches and primitives resulting in large memory usage.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of WebSphere Enterprise Service Bus * * and WebSphere Process Server v6.2 and v7.0 * * who are using flows with a large number of * * different paths to the same primitives and * * who are experiencing excessive memory usage. * **************************************************************** * PROBLEM DESCRIPTION: When the runtime creates a flow, a * * complete tree structure of every * * possible path through that flow is * * created. If there are multiple paths * * to a primitive or subflow then * * multiple instances of that and any * * subsequent primitives will be stored * * in memory. While this is functionally * * correct it can results in excessive * * memory usage. * **************************************************************** * RECOMMENDATION: * **************************************************************** A tree structure is used to store the many paths through a flow in the runtime. If the same primitive, or set of primitives, is reached by multiple paths then that primitive, or set of primitives, would have to be duplicated in memory for each of the multiple paths. In complex flows with many possible paths this can result in excessive memory usage. To avoid this problem the tree structure is replaced by a net. This allows the same instance of the primitive to be used and therefore reduces the size of the flow stored in memory.
Problem conclusion
The code was modified such that a different structure is now used to store the flow in memory There are no known side effects associated with this fix. There is no known alternative workaround should you encounter this problem. This code fix was targeted to be included in the following fix packs: 6.2.0 Fix Pack 3 (v6.2.0.3) 7.0.0 Fix Pack 2 (v7.0.0.2)
Temporary fix
Comments
APAR Information
APAR number
IC66713
Reported component name
WEB ESB FOR WIN
Reported component ID
5724I8200
Reported release
620
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-03-01
Closed date
2010-03-04
Last modified date
2010-04-20
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WEB ESB FOR WIN
Fixed component ID
5724I8200
Applicable component levels
R100 PSN
UP
R200 PSN
UP
R300 PSN
UP
R612 PSN
UP
R620 PSY
UP
R700 PSY
UP
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Document Information
Modified date:
30 March 2023