I am trying to connect to Queue Manager using MQ api and I am able to connect to queue manager
MQQueueManager queueManager=new MQQueueManager(qmgrName);
queueManager.accessQueue(qName,MQOO_OUTPUT);
But when I try to connect to the same queue manager using JMS it fails with 2058 code.Not sure if I am missing something with JMS
MQQueueConnectionFactory qcf=new MQQueueConnectionFactory();
qcf.setQueueManager(qmgrName);
qcf.setPort(1414);
qcf.setHostname("localhost");
qcf.createQueueConnection();
You have two or more queue managers on the local host. In your first example you connect in bindings mode so the queue manager is selected by name and you get the right one. In the second example the connection is being made over a client connection and so is received by the QMgr listening on 1414 which is not the one that you intend so the connection is rejected.
Please note that if both QMgrs have a listener on 1414 the connection will succeed or fail depending on which QMgr was started first. Only one can bind to that port so the first one started on it gets to use it. This might lead to what appears to be inconsistent behavior.
Please see Connection modes for IBM MQ classes for JMS which advises "To change the connection options used by the IBM MQ classes for JMS, modify the Connection Factory property CONNOPT." The acceptable values are provided on the page but you almost always want it to set for Standard Bindings (MQCNO_STANDARD_BINDING).
As documented here, MQRC 2058 means an invalid queue manager name or the queue manager name is unknown. But as you mention, bindings mode connection using MQ Base Java is successful, the queue manager name appears valid.
Update:
Sorry, I was mislead by your code and thought you are trying to do client mode connection using JMS. You don't need to set host and port for bindings mode connection.
Since the transport type is not set, default, WMQ_CM_BINDINGS is used. Suggest you to verify the queue manager name.
To connect with "BINDINGS", the queue manager needs to be local. Are you trying to connect to a remote queue manager? If so you would need to connect as "CLIENT". Also, check to be sure the qmgr is listening on the port you specified.
Related
in Java, application servers like JBoss EAP have the option to periodically verify the connections in a database pool (https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/6.4/html/administration_and_configuration_guide/sect-database_connection_validation). This has been very useful for removing stale connections.
I'm now looking at a ADO.NET application, and I was wondering if there was any similar functionality that could be used with a Microsoft SQL Server?
I ended up find this post by redgate that describes some of the validation that goes on when connections are taken from the pool:
If the connection has died because a router has decided that it no
longer wants to forward your packets and no other routers like you
either then there is no way to know this unless you try to send some
data and don’t get a response.
If you create a connection and a connection pool is created and
connections are put into the pool and not used, the longer they are in
there, the bigger the chance of something bad happening to it.
When you go to use a connection there is nothing to warn you that a
router has stopped forwarding your packets until you go to use it; so
until you use it, you do not know that there is a problem.
This was an issue with connection pooling that was fixed in the first
.Net 4 reliability update (see issue 14 which vaguely describes this)
with a feature called “Connection Pool Resiliency”. The update meant
that when a connection is about to be taken from the pool, it is
checked for TCP validity and only returned if it is in a good state.
I am having an incredibly difficult time finding any information by IBM on how to connect to our company's queue. Some more specific questions:
do I need the queue manage?
how do I know which queue connection factory to use?
how do I connect to the queue from a standalone java application?
I honestly can't find any MODERN, up-to-date resources explaining the websphere mq and how to make use of it (this includes within my own company).
Thanks!
You can connect to a queue manager in either binding mode or client mode. Binding mode allows an application to connect to the queue manager only when they are both running on the same machine. Client mode allows an application to connect to the queue manager when the two a running on separate machines. You can use client mode when they are both running on the same machine but its not as efficient as binding mode.
If you want to use binding mode then you only need to know the queue manager name.
If you want to use client mode then you will need to know the queue manager name, hostname, listener port number, and channel name.
The following URL provides some information on using JMS to connect to MQ:
http://www-01.ibm.com/support/knowledgecenter/SSFKSJ_7.5.0/com.ibm.mq.dev.doc/q031500_.htm
I have WAS MQ 7.1 Server installed in windows. My application running on unix is trying to connect to this server during which it gives the error "MQ Connect failed 2195" in the application logs. On debugging the code , i found it is while connecting to the q manager that it is throwing this error.
I tried to run a netstat on the MQ Server port no. and do a telnet to check if there is any connection being established . But I could not see any connection being established to the q manager .
The possible issues could be
1. Que Manager has not been started
2. Listener not started
3. Initiation queue not started or created or attached(usually optional depending on set up)
4. Listening to the wrong Port or IP
5. Firewall stopping traffic to Port or IP
6. Queue Manager not created on destination
7. Not authorized to Queue manager and/or channel and/or queue
8. Trial MQ copy expired.
9. Wrong Queue manager name
10. Wrong channel name or password or queue or queue type
Have done the following to check if it is working fine .
1. Tried to put a message from windows to the MQ Server which was successful.
2. Gave auth(setmqaut) permission to Request queue that was created.
3. There is no firewall between application and MQ Server.
4. Channel name , q manager , IP and port no.s are correct.
In my windows MQ Setup i have created the Server connection channel and Client connection Channel.
export the mqm lib to SHLIB_PATH.
Added the application user to mqm group and also the windows user through which I had created the MQ Server setup
Had copied the AMQCLCHL.TAB to the unix machine containing the client program.
exported MQCHLTAB to the table filename
exported MQCHLLIB to the path containing the table name
exported the MQSERVER=QMgrName/CHANNEL1/hostname from the client machine.
Please let me know if I am missing anything w.r.t connection of the application(in Unix) to the MQ Server(in Windows).
2195 is MQRC_UNEXPECTED_ERROR. It implies something that should not have happened, even if you set it up wrong. It may well be accompanied with an FDC file in the errors directory. You should raise a PMR with IBM Service.
I am trying to use Queue-s, so I need to set a Connection Factory, and Queue.
But at the beggining, I can't go forward. I can't set the Connection Factory.
I am using this link to set up a connection factory:
link
But at the 9th step I don't know what to set, this is the interface to set:
If I set "localhost" to Hostname, then click NEXT and trying to test it, I get this message:
A connection could not be made to WebSphere MQ for the following
reason: JMSCMQ0001: WebSphere MQ call failed with compcode '2'
('MQCC_FAILED') reason '2059' ('MQRC_Q_MGR_NOT_AVAILABLE').
So.. How could create a connection factory?
The transport should not be client if you are trying to connect to a local qmgr in bindings mode. The application server will access the qmgr using IPC.
If you are trying to connect as a client then TCP will be used in that case you need to specify the port where the qmgr listener is listening and the SVRCONN (server connection) channel to use.
I am a very beginner to WebSphere MQ world and this is what I'm looking for:
I have to create a simple system with 2 Machine (sender and receiver) to share messages on a queue:
PC 1 sender --> Queue --> PC 2 receiver
Both machines are Windows based and actually are on the same physical PC using virtualbox P1 (host) and PC 2 (guest)
Here is what I have done following online guides:
PC 1 sender:
Websphere MQ (full trial) installed
on MQ Explorer:
Queue Manager "QM.01" created
local Queue "Q.01" created with use=Transmission
channel sender "CH.01" created with queue=Q.01 and some doubts on connection which actually is 1414
PC 2 receiver:
only MQExplorer installed
try to create a remote queue manager with sender IP, 1414 port, and
CH.01 channel --> error 2539 (something wrong on PC 1 configuration
try to create a remote queue manager with sender IP, 1414 port, and
default SYSTEM.ADMIN.SVRCONN channel --> error 4036 (something wrong
with account authentication, I tryed to use the same "Adminitrator#PC
1" user. I've also tried to create the remote queue manager on PC 1
itself with the same result)
I suppose my error could be on PC 1 channel, its icon has a yellow or blue triangle and status=trying are not good.
Ps. forgive me if some setting name are not matching the English version, I have to translate them.
Now that I've been able to configure a remote QMgr on client PC I would learn how to write a simple program (maybe in Java) to read from a queue on the remote queue manager.
I've found a few guides but, before starting in Java, I tried to test amqsget and amqsput from command prompt.
There are no problems from the server machine (with Websphere full trial installed) but the console can't recognize the command from the client (with both Websphere client and MQ Explorer installed)
Where are my mistakes, or what passage have I missed?
When you have an application that needs to talk to a QMgr over the network, you create SVRCONN channels such as SYSTEM.ADMIN.SVRCONN. The application using a SVRCONN channel is able to open queues directly and put or get messages from them. There is no need to create a transmission queue or set USAGE=XMITQ in order for client applications to work.
When you have two QMgrs that need to communicate, you connect them using MCA channels. On the sending QMgr, these include SENDER, SERVER and CLUSTER SENDER. On the receiving QMgr there would include RECEIVER, REQUESTOR or CLUSTER RECEIVER channels. Any of the outbound channels (SDR, SVR or CLUSSDR) require a transmission queue.
In the example you described, there is only one QMgr therefore no SDR, SVR or CLUSSDR channel is required. You will need to use a SVRCONN such as SYSTEM.ADMIN.SVRCONN. You did not mention having defined a listener but apparently you did or else you would not have received a 2539 MQRC_CHANNEL_CONFIG_ERROR message. The reason you get 2539 is because you are attempting to connect with a client to a channel designed for QMgr-to-QMgr connections. The 4036 is because the configuration is incorrect.
Delete CH.01 and redefine it as a SVRCONN channel.
Alter Q.01 with USAGE=NORMAL
Configure WMQ Explorer to connect to CH.01.
As Shashi mentioned, take a look at some of the basic docs. These include...
Introduction to WebSphere MQ
Designing a WebSphere MQ architecture
The Quick Beginnings manuals have been broken up but the main sections are indexed here.
You may also wish to review the WMQ Security Lab for V7.1 and earlier posted at T-Rob.net. Although it is a security lab, it comes with scripts that build the lab environment, including SVRCONN and SDR/RCVR channel pairs, as well as an extensively illustrated lab guide.
Thank you for your response,
Following your indication I've understood I don't need two QMgr as I supposed,
but only one on the sending machine.
Therefore I have changed the query usage to normal, deleted the channel and leave other configuration by default:
SYSTEM.ADMIN.SVRCONN channel and LISTENER.TCP on 1414 port are automatically created.
I've tried also to redefine a channel named CH.01 as a SVRCONN channel
(Channel > new > server connection channel; and then choose between SYSTEM.ADMIN.SVRCONN, SYSTEM.AUTO.SVRCONN or SYSTEM.DEF.SVRCONN)
but unfortunately I wasn’t able to "Configure WMQ Explorer to connect to CH.01".
Anyway every attempt I have made to connect from the second PC are now ended with a AMQ4036 error; even if I’ve set in the CH.01 MCA Properties the ID user as my PC administrator and I have enabled the user identification on PC 2 as administrator#PC 1.
What I'm trying to achieve is to replicate an application used by company which receives data from a remote queue.
The queue connection specification given for test are: Server Name/IP, Port and Channel name.
This is the reason why I'm trying to replicate it creating a QMgr on the receiving PC, because when I tried with the default test information on my company machines it worked creating a QMgr with all the test queues avilable.
I'm now on holiday and I can't have more specific information about my company settings but I hope to be able to replicate a configuration like that.
Regards,
Flavio.