APAR status
Closed as program error.
Error description
A node-owned integration server will leak native memory every time a flow statistics message, resource statistics message, or admin log notification message is publish.
Local fix
For node-owned integration servers, we recommend disabling flow statistics, resource statistics, administration logging. This can be achieved using the following changes to the `server.conf.yaml` file: Statistics: Snapshot: publicationOn: 'inactive' Archive: archivalOn: 'inactive' Resource: reportingOn: false Events: OperationalEvents: MQ: enabled: false MQTT: enabled: false AdminEvents: # Administration events - AdminLog MQ: enabled: false MQTT: enabled: false AdminLog: enabled: false For independent integration servers that are either unoptimised, or are optimised but still have Node.js enabled for other features, we recommend that that either the same changes as given above for node-owned integration servers are made, or that the `RestAdminListener.port` property is changed to a non-zero value enabling the administrative API/web user interface.
Problem summary
**************************************************************** USERS AFFECTED: All users of IBM App Connect Enterprise 12.0.12.0 or above and 11.0.0.25 - 11.0.0.26 Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: IBM App Connect Enterprise 12.0.12.0 introduced internal changes to allow IBM's proprietary JavaScript modules used by ACE to be migrated to ECMAScript modules, so that we may continue to provide security updates in a timely manner. As part of these changes, an internal JavaScript module that implements part of the administrative REST API no longer gets loaded in cases where it is not needed. Specifically these cases are: * Node-owned integration servers, i.e. `DataFlowEngine` processes * Independent integration servers, i.e. `IntegrationServer` processes, where the `RestAdminListener.port` property is zero, but Node.js has not been disabled due to server optimisation. To enable flow statistics, resource statistics, and administration log messages to appear in the web user interface, a JSON message is passed through to this internal JavaScript module. This JSON message is backed by unmanaged native memory, not memory owned by the JavaScript garbage collector. The internal JavaScript module is responsible for freeing this unmanaged memory when it has finished with it. In ACE 12.0.12.0 or later under the scenarios described above, this JSON message is still generated but the JavaScript module responsible for freeing it is no longer loaded. This causes memory to be leaked with every publication of flow statistics, resource statistics, and admin log events.
Problem conclusion
<div><div>The JSON message that was previously being leaked will no longer be generated if the corresponding internal JavaScript module is not loaded Go to the APAR entry in ACE v12 Release Notes https://www.ibm.com/support/pages/node/6457259 to download available fixes for v12.0. Go the the APAR entry in ACE v11 Release Notes https://www.ibm.com/support/pages/node/619045 to download available fixes for v11.0. A tech note has been published, https://www.ibm.com/support/pages/node/7155286, detailing a related increase in baseline VSZ usage for ACE 12.0.11.0 and above --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v12.0 12.0.12.3</div></div>
Temporary fix
Comments
APAR Information
APAR number
IT46223
Reported component name
APP CONNECT ENT
Reported component ID
5724J0560
Reported release
C00
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2024-05-23
Closed date
2024-05-30
Last modified date
2024-06-18
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
APP CONNECT ENT
Fixed component ID
5724J0560
Applicable component levels
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSDR5J","label":"IBM App Connect Enterprise"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C00","Line of Business":{"code":"LOB67","label":"IT Automation \u0026 App Modernization"}}]
Document Information
Modified date:
18 June 2024