Solution : https://service.sap.com/sap/support/notes/1497510 (SAP Service marketplace login required)
Summary :
Key words :
transaction sm66 waiting, repeatedly access trfcqin, process appears, inbound queues, processes mentioned, point 1 proceed, terms lock, ready reason, queue scheduler, final step
Related Notes :
| 1500048 | SMQ2 inbound Queue remains in READY state |
| 1493644 | Long running process reading TRFCQIN blocking execution |
| 1485789 | QRFC: Long running processes in SM50 |
| 1456887 | Many processes select TRFCQIN with SAPLIRFC |
| 1324454 | qRFC scheduler is still set to WAITING status |