Random Job Failures with Error U02000495 in Unix Agent

Products

• CA Automic Workload Automation - Automation Engine

Issue/Introduction

Users may experience random job failures (including standard Jobs and File Transfers) on Unix/Linux Agents. The jobs fail during the initiation phase with the following error messages in the Agent log:

• U02000495 Communication to UserService 'UserServiceDriver' for request 'USOPEN' failed, reason: 'null'.

• U02000186 Report file '/.../OACXXXXX.TXT' for Job 'JOB_NAME (RunID)' cannot be opened. Error: 'java.io.IOException Failed to open file...'

• U02003083 User-Service for User 'username' with PID: 'XXXXX' ended.

 

Environment

Product: CA Automic Workload Automation - Automation Engine

Component: Unix Agent

Release: 24.4.x

Cause

DE179261

Resolution

Update to a fix version listed below or a newer version if available.

Fix version:
Component(s): Unix Agent

Automation.Engine 24.4.4 - Planned release March 2026

Additional Information

Public Title: Agent Unix: Agent is not able to start any I/O task using same user if the request comes after 30 min of inactivity on the User-Service

Public Description: An issue has been solved that prevented the Agent Unix from starting any I/O tasks using the same user if the request came after 30 min of inactivity on the User-Service. 

Resolution details: New INI parameter introduced, which can be used to control the idle timeout of the UserService program.

[MISC]
userServiceIdleTimeout=1800

As a protection for such errors, the UserService will be ended 10sec before reaching the idle timeout.