Request Timeout while using Odata call to a gateway in SAPUI5 application

When encountering request timeout issues while making OData calls to a gateway in SAPUI5 applications, the problem often lies in the server-side timeout configurations rather than the client-side code. This typically occurs when ICM (Internet Communication Manager) and Web Dispatcher timeout settings are insufficient for your application's requirements.

Understanding SAP Timeout Parameters

In SAP systems, ICM and Web Dispatcher control different types of timeouts through specific parameters −

• Connection timeout: icm/conn_timeout − Controls the timeout for opening a connection
• Request timeout: icm/traffic_control − Controls the timeout for receiving a request
• Keep-alive timeout: icm/server_port_<xx> option TIMEOUT and icm/keep_alive_timeout − Controls network connection keep-alive timeout
• Processing timeout: icm/server_port_<xx> option PROCTIMEOUT − Controls backend processing timeout

SAP Recommended Configuration

For systems where the standard 60-second timeout is insufficient due to long-running applications, SAP recommends configuring both TIMEOUT and PROCTIMEOUT parameters independently. The TIMEOUT value should not be set unnecessarily high to maintain system performance.

Example Configuration

Here's the recommended parameter setting for allowing longer processing times −

icm/server_port_0 = PROT=HTTP, PORT=1080, TIMEOUT=60, PROCTIMEOUT=600

This configuration maintains a 60-second connection timeout while allowing up to 10 minutes (600 seconds) for backend processing. This setup is particularly useful for SAPUI5 applications that perform complex OData operations or retrieve large datasets.

Implementation Steps

To resolve timeout issues in your SAPUI5 OData calls −

1. Access your SAP system's parameter configuration (transaction RZ10 or RZ11)
2. Locate the relevant icm/server_port parameter for your service
3. Add or modify the PROCTIMEOUT value based on your application requirements
4. Restart the ICM or SAP system for changes to take effect

For detailed timeout configuration options, refer to the SAP Help Portal documentation on ICM and Web Dispatcher timeout settings.

By properly configuring these timeout parameters, your SAPUI5 application should be able to handle longer-running OData requests without encountering timeout errors.