Problem Note 64091: The SAS® Event Stream Processing Server (executable program name dfesp_xml_server) exhibits memory growth and eventually crashes
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The SAS Event Stream Processing Server (dfesp_xml_server) shows memory growth each time an event block is processed by the connector. Eventually, dfesp_xml_server can consume all the memory on the system, which causes the server to crash.
This issue occurs because a SAS Event Stream Processing model uses a DB subscriber connector with an ODBC driver. The connector uses DRIVER=ODBC in the connectstring connector property. For example, the connector's connectstring connector property might be set as follows:
To work around this issue, recycle the ESP XML Server periodically to release the storage. This action stops all running models.
Click the Hot Fix tab in this note for a link to instructions about accessing and applying the software update.
Operating System and Release Information
| Product Family | Product | System | Product Release | SAS Release | ||
| Reported | Fixed* | Reported | Fixed* | |||
| SAS System | SAS Event Stream Processing Engine | Microsoft® Windows® for x64 | 5.2 | 5.2 | ||
| Linux for x64 | 5.2 | 5.2 | ||||
| SAS System | SAS/ACCESS Interface to ODBC | Microsoft® Windows® for x64 | V.03.04 | V.03.04 | Viya | Viya |
| Linux for x64 | V.03.04 | V.03.04 | Viya | Viya | ||