On 10.01.2017 18:06, Joleen Barker wrote:
Hi Andre - I played around a little more and ran the command netstat -a |
grep 1526 which is the port number and received information that looks like
11 connections are open at this time. Do you know what the number is that
follows the machine name in the forth column for example the 51186?
I do not know AIX. Maybe try :
netstat -h
and/or
man netstat
(and also try the command without the grep, to see the column headers)
netstat -a | grep 1526
tcp 0 0 cpmfttapt21.51186 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.51198 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.51211 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.55213 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.55214 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.55215 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.57493 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.57495 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.35153 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.35154 cpmfttdbt01-vip..1526
ESTABLISHED
tcp 0 0 cpmfttapt21.35157 cpmfttdbt01-vip..1526
ESTABLISHED
On Tue, Jan 10, 2017 at 11:59 AM, Joleen Barker <oldenuf2no...@gmail.com>
wrote:
Hello Filippo - I do not have JConsole available and the proposed idea is
past my knowledge level.
Hello André - This was an interesting idea but it didn't work for me. I
only have the ksh available and could only use netstat -p tcp but the
output didn't make sense to me.
On Tue, Jan 10, 2017 at 11:24 AM, André Warnier (tomcat) <a...@ice-sa.com>
wrote:
On 10.01.2017 17:10, Joleen Barker wrote:
Hello All,
Details:
Tomcat Version: 7.0.64.0
Java Version: 1.8.0
OS: AIX 6.1
Database: Oracle 11
The web application installed on the server above makes data connections
to
run file transfers from point A to point B. The default Database
connection
setting that are set when the application server comes up are as follows:
DataBasePoolingFlag - APACHE
MaxActive - 400
MaxIdle - 20
MinIdle - 10
We had an incident where all these connections were actually used up due
to
a script someone had that looped. I need to determine at any given point
in
time how many DB connections exist from the web application to the DB.
There may be more than one way to do this. I am sure there is a DB
command
that could be run against the schema but the schema is pointed to by many
servers. I am wondering if there is a java command of some kind that I
could run that may tell me how many connections are open at that time or
possibly a tomcat or apache command.
Thank you for the help in advance.
Hi.
Maybe an "out of the box" answer, not using java.
I don't know how the following commands fare under AIX, but on a Linux
system, the OS-level command :
~# netstat -pan --tcp | grep ESTABLISHED
will show you pretty much all TCP connections that are established
between any process and any other, local or remote.
Sample output :
tcp6 0 0 127.0.0.1:45095 127.0.0.1:11002
ESTABLISHED 11096/java
tcp6 0 0 127.0.0.1:8009 127.0.0.1:53564
ESTABLISHED 2677/java
tcp6 0 0 127.0.0.1:8009 127.0.0.1:53677
ESTABLISHED 2677/java
tcp6 0 0 127.0.0.1:8009 127.0.0.1:53659
ESTABLISHED 2677/java
tcp6 0 0 127.0.0.1:8009 127.0.0.1:53656
ESTABLISHED 2677/java
tcp6 0 0 127.0.0.1:8009 127.0.0.1:53620
ESTABLISHED 2677/java
tcp6 0 0 127.0.0.1:8009 127.0.0.1:53608
ESTABLISHED 2677/java
tcp6 0 0 127.0.0.1:45142 127.0.0.1:11002
ESTABLISHED 11096/java
tcp6 0 0 127.0.0.1:43558 127.0.0.1:11002
ESTABLISHED 11096/java
tcp6 0 0 127.0.0.1:45128 127.0.0.1:11002
ESTABLISHED 11096/java
tcp6 0 0 127.0.0.1:45069 127.0.0.1:11002
ESTABLISHED 11096/java
I presume that you could easily find out the process-id of your Tomcat,
and the port number under which the database is accessed.
It would be a simple matter to "grep" the above and count the lines, to
get the answer you seem to want.
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