Thanks, Alan. I'll breathe a little easier now. Don Abbate Supreme Court of Virginia (804) 786-4540
Alan Altmark
<[EMAIL PROTECTED]
ibm.com> To
Sent by: VM/ESA [email protected]
and z/VM cc
Discussions
<[EMAIL PROTECTED] Subject
.UARK.EDU> Re: TCPIP low on TCBs
03/09/06 02:14 PM
Please respond to
VM/ESA and z/VM
Discussions
<[EMAIL PROTECTED]
.UARK.EDU>
On Thursday, 03/09/2006 at 01:42 EST, Don Abbate
<[EMAIL PROTECTED]> wrote:
> TCPIP just gave us some messages on the console I have not seen before.
> They are:
> TCP/IP is low on TCBs. OF 256 blocks 24 are free
> TCP/IP is low on SCBs. Of 256 blocks 25 are free
> TCP/IP was very low on TCBs. Of 286 blocks, 42 are free after 30 more
> allocated.
>
> Where do I start to look and how critical is the situation?
The message is just informational; the storage pools are automatically
expanded. If you've never seen those messages before, then it indicates
"unusual" activity. TCBs are used to describe TCP connections. SCBs are
used to describe sockets.
I'm guessing that if you look at NETSTAT you may see an unusually large
number of connections.
Read the "Free Pool Statements" section of the "Configuring the TCP/IP
server" chapter of the TCP/IP Planning book for details.
Alan Altmark
z/VM Development
IBM Endicott
