WorkProcess Hangs on Program SAPLSENA with Reason ENQ

If your SAP work processes hangs on program SAPLSENA with the reason ENQ , then you should check the log files and compare you situation with this article…

In our case , always SM50 work process table shows some process like below and this processes never ended.

WorkProcess Hangs on Program SAPLSENA with Reason ENQ

Related WP log gives the message like below picture ;

*** ERROR => NiIRead: SiRecv failed for XX/Sock 13
(SI_ECONN_BROKEN/104; UD; ST; <IP Address>:32<Instance Number> [nixxi.cpp 5082]

WorkProcess Hangs on Program SAPLSENA with Reason ENQ

Meanwhile SM21 logs getting error message like ;

Operating system call recv failed (error no. 104 )

WorkProcess Hangs on Program SAPLSENA with Reason ENQ

Finally main problem was found with following log

“dev_enqlisten” output ;

*** WARNING => NiICreateHandle: no more free handles (24) [nixxi.cpp 466]

WorkProcess Hangs on Program SAPLSENA with Reason ENQ

Solution ;

increase parameter enque/server/max_clients

Default value is “1000″ for this parameter , you can increase it or you can remove it use default value.

for detail information you can check the following OSS note ;

2196513 – WARNING => NiICreateHandle: no more free handles (XXXX)

 

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