[ISS Support Case] Unknown: Comm Error (DISource not accessible).
Last updated: March 6th, 2025Description
in June had a licensing issue break old license relationship Suddenly IO servers get Unknown: Comm Error (DISource not accessible). redundant partner also enters this status Issues started with upgrade Scripts issues, PLC communication issues, NMX errors. Sunday IO server overwhelmed (Suspect additional factors at play) Recently made the following tweaks to the system. Ping Items RB Active All vs Active on demand MV Checkpoint period (blank) Scan period bumped up from 1 - 1.5 NMX service raised to 300K Warm redundancy ( now enabled) Device Items in OI have been staggered (different topics and scan times, load balancing) Feels the system is in desperate need of tuning, Every Sunday 40% of the systems are rebooted, followed by another 40% at a later time and finally at 8PM the final 20%
- Author: Kevin Modlin
- Published: March 6th, 2025
Details:
| Product: Application Server |
| Version: 2023 |
| Solution: [Solution is visible below when you're logged in and have a current subscription] |
| Date Created: | 03/15/2024 |
| Case: | 86415 |
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