Solution : https://service.sap.com/sap/support/notes/743888 (SAP Service marketplace login required)
Summary :
When SAP system networks are separated by firewall software, the TCP/IP protocol fails to detect disconnections, causing connections to accumulate in the gateway. This can lead to repeated attempts to connect to the same system and eventually overflow the gateway's connection table. The issue can be resolved by enabling the KEEPALIVE option in TCP/IP. This is achieved by setting the gw/so_keepalive parameter in the instance profile to 1, prompting the protocol to send keep-alive messages and close connections when no responses are received.
Key words :
tcp/ip network protocol sends messages, gw/so_keepalive instance profile parameter, tcp/ip network protocol, terms gw/so_keepalive, gw/max_sys, so_keepalive reason, network connections, firewall software, repeatedly made, longer period
Related Notes :
| 1410736 | TCP/IP: setting keepalive interval |
| 1095272 | Redundant GW/GW connections in transaction SMGW |
| 744711 | CST Patch Collection 25 2004 |
| 516027 | Gateway error due to terminated TCP connection |