Question

websphere test connection fails with

Asked by: wasadmin11

getting this error after datasource connection string was changed. Firewall admin says traffic is passing, DBA says its due to port not being opened.


The ports to the db instance public IP were opened.  There is a virtual IP also.

database is oracle , websphere is 6.0.2


Test connection failed for data source EportalDS on server dmgr at node redCellManager01 with the following exception: java.lang.Exception: java.sql.SQLException: Io exception: Connection refused(DESCRIPTION=(ERR=1153)(VSNNUM=169870336)(ERROR_STACK=(ERROR=(CODE=1153)(EMFI=4)(ARGS='(ADDRESS=(PROTOCOL=TCP)(HOST=jasmine_vip)(PORT=1521))'))(ERROR=(CODE=305)(EMFI=1))))DSRA0010E: SQL State = null, Error Code = 17,002.


Is the problem with firewall , or db  ?

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Asked On
2009-11-08 at 08:07:26ID24881659
Tags

websphere

,

connection fail

Topics

IBM Websphere Application Server

,

Oracle 10.x

,

Oracle Database

Participating Experts
2
Points
500
Comments
11

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Answers

 

by: Ajay-SinghPosted on 2009-11-08 at 08:21:05ID: 25770881

Clearly, the connection can't be made to server. You can try
connecting to server "jasmine_vip" at port 1521.

Try this:

telnet jasmine_vip 1521


from the server host and see if it can create a connection.

 

by: KeremEPosted on 2009-11-08 at 09:46:38ID: 25771164

Hi,

just logon to the Oracle server and observe

netstat -an

ourput if you can see port 1521 is listening then it seems that Oracle Listener is active. So this must not be a db issue. If not start oracle listener.

Try to telnet as ajay-singh suggested over the Oracle system. If you succeed then try to telnet to the same system over the websphere server. If you can not succeed then it must be a firewall or routing problem and most likey that the firewall over oracle server or a firewall in between..

Will you please elaborate about your local setup? Are both systems (websphere, oracle) located on the same subnet? Are there any gateways in between? Any firewalls ? Can you ping to the Oracle system from Websphere system? Vice versa?

Cheers,
K.

 

by: wasadmin11Posted on 2009-11-08 at 19:51:46ID: 25773293

Ajay

telnet jasmine_vip 1521 works

Kerem E

listener is running

 

by: wasadmin11Posted on 2009-11-08 at 20:07:23ID: 25773334

the old db was oracle 9i the new db is oracle 10g with RACX . Should the helper class in WebSphere datasource  

 

by: wasadmin11Posted on 2009-11-08 at 20:08:05ID: 25773336

sorry for the incomplete post earlier...
it should read as the helper class in websphere datasource (in Console also change) to 10g ?

 

by: KeremEPosted on 2009-11-08 at 23:20:21ID: 25773904

Since you're sure that the listener is working and you can telnet to the listener. It seems that all is operational and yeah you need to modify your applications and use the specific helper class for the new 10g server instead of the  9g helper class. Databases will not connect without specific helper class already present. The specific driver should be included in listener code. Please get it and replace with the old one.

Cheers,
K.

 

by: wasadmin11Posted on 2009-11-09 at 06:18:25ID: 25776063

Thanks for the input. I am on the verge of solving this issue. The database is on Oracle 10g RAC with each instance on its own IP. and two virtual IPs  ( i am not familiar much with Oracle).

I hope to solve this tommorow . will keep you updated.

 

by: KeremEPosted on 2009-11-09 at 06:31:19ID: 25776188

Just take your time. Let me know if I could be of further help. Good Luck.

 

by: wasadmin11Posted on 2009-11-10 at 20:31:20ID: 25792293

OK its workign now :-) . The problem was with the IPs. Instance A was hosted on IP X and Instance B (RAC instance) was hosted on IP Y and each IP had its own virtual IP. After putting the right IPs and opening all the required ports it worked. Thanks all

 

by: KeremEPosted on 2009-11-11 at 01:05:55ID: 25793308

But I'd suggest you to updatee the helper too. Though it might be seen as weorking now it might later introduce further problems when certain conditions are met such as changed characteristics between some constraints / Triggers etc.

Cheers,
K.

 

by: KeremEPosted on 2009-11-11 at 01:06:42ID: 25793311

It had occured to me in the past with websphere and db2 :)

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