on 03-22-2011 9:40 AM
Hello,
We have a commen error in our two systems. The users complaints about the long running work processes. When we try to connect DB, the connection was not possible and we received the error "TNS-12560: TNS:protocol adapter error". After restarting the services and SAP instance,we were able to connect to DB.
Also in SM21 we found the relative entries like "TNS-12518: TNS:listener could not hand off client connection"
I am pasting here the Listener.og.
21-MAR-2011 16:48:45 * (CONNECT_DATA=(SID=MJD)(GLOBAL_NAME=MJD.WORLD)(CID=(PROGRAM=F:\usr\sap\MJD\SYS\exe\uc\NTAMD64\R3trans.exe)(HOST=SGSI23SRMEBQ)(USER=mjdadm))) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.155.62.26)(PORT=1942)) * establish * MJD * 12571
TNS-12571: TNS:packet writer failure
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
64-bit Windows Error: 54: Unknown error
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
64-bit Windows Error: 233: Unknown error
I had acheck at OS level for DB parameters processes and sessions. Both are in acceptable ranges and as per standards.
I am not able to find out the exact reason for the issue. This happened two times yesterday. Finally we took complete OS (Widows) reboot.
Please help me to understand what exactly causing the error.
Thanks in advance.
Regards,
Sujit
This could have been easily caused by your antivirus, can you check the event viewer for errors?... also check your antivirus/firewall for blocked requests.
Regards
Juan
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