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non-existent process lock port on windows server

I have a database link created between oracle and sqlserver using oracle tg4odbc, the product is installed on windows server and run as service "OracleOraGtw11g_home1TNSListener", but sometime the service cannot started, the root cause of this problem is that the port number 1521 is used by an non-existent process.

The first step is to use netstat -bano|find "1521" to get the process id, in my case it's 5844, which shows the connection is from my oracle server 10.8.0.169

H:\>netstat -bano|find "1521"
  TCP    0.0.0.0:1521           0.0.0.0:0              LISTENING       5844
  TCP    10.14.45.33:1521       10.8.0.169:42987       ESTABLISHED     5844


however the process id does not show in either task manager or process explorer.

The next step is to run tcpview, which shows non-existent under process column, there are three rows, two show status as "listening", the other one shows status "established", right click and kill all of them.

after these three non-existent processes disappear, I am able to start the service successfully.

on AIX, I can use the following method, I did not verify it though.

# netstat -Aan | grep LISTEN | grep 1334
f100050000b05bb8 tcp4       0      0  *.1334                *.*                   LISTEN
 
You then take the first column (f100050000b05bb8 in this example) and run the following command:
 
# rmsock f100050000b05bb8 tcpcb
The socket 0xf100050000b05808 is being held by proccess 5767378 (writesrv).

Comments

  1. walkthroughOctober 18, 2013 at 8:20 AM

    the right procedure to kill it is to "end connection" for the "established" row, and "end-process" for the "listening" row.

    ReplyDelete
  2. walkthroughJuly 20, 2018 at 11:23 AM

    another way to kill process that hold the port on windows:
    netstat -a -o -n |find "#PORT"
    tasklist /FI “PID eq #PID″
    taskkill /F /PID #PID

    ReplyDelete
  3. walkthroughJuly 20, 2018 at 11:25 AM

    Powershell:
    PS C:\> netstat -ano | Select-String "#PORT"
    PS C:\> Get-Process -Id #PID
    PS C:\> Stop-Process #PID

    ReplyDelete

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