Error: OPS3541H or OPS3541O errors and MSF connection(s) drop with RPL6RC=x'00580000'

Products

• OPS/MVS Event Management & Automation

Issue/Introduction

Continuous console messages appear after a system IPL or during heavy MSF traffic:

• OPS3540I APPC SEND DATA FUNCTION FAILED FOR [sysid] - RC=0014
• OPS3540I APPC FLUSH DATA FUNCTION FAILED FOR [sysid] - RC=0014
• OPS3541H APPC ALLOCATE FUNCTION FAILED FOR [sysid] - RPL6RC = X'00580000'

Environment

• OPS/MVS Event Management & Automation
• Multi-System Facility (MSF) using APPC/SNA

Cause

The VTAM DSESLIM (Defined Session Limit) parameter in the OPS/MVS APPL definition is set to a value less than 3. A limit of 2 can cause sessions to hang or go out of sync when parallel processing is required.

Resolution

Update the VTAM configuration and recycle the MSF sessions using the following steps:

1. Modify VTAMLST: Locate the APPL definition for the OPS/MVS MSF LU and set DSESSLIM=3
   
   

   netname APPL APPC=YES,
   AUTH=ACQ,
   AUTOSES=1,
   DSESLIM=3, <===== here
   DMINWNL=1,
   DMINWNR=1,
   MAXPVT=512K,
   MODETAB=modetab,
   PARSESS=YES,
   PRTCT=vtampswd

2. Activate VTAM Change: Vary the updated APPL definition active in VTAM.
3. Recycle MSF:
   • If possible, recycle OPSMAIN on the affected systems
   • If recycling OPSMAIN is not an option restart only MSF:
     F OPSx,RESTART(MSF) where OPSx is the OPS/MVS subsystem
     • Make sure the MSFINIT REXX program is executed to re-define the connections

Additional Information

See the section of the applicable release manual titled "Configure the Multi-System Facility (MSF)"  

This is applicable to releases 12.3 and subsequent