Jdbc sender adapter hangs and starts showing "Processing Started" forever

Dear ,
We are facing some issues with jdbc sender adapter channel on production system
Environment : XI 3.0 SP 20 + HP-UX 11.23 ia64 + Oracle 10.2
Sometimes it hangs and starts showing "Processing Started" forever on communication channel monitoring .
There is no error log for this.
If i stop it and then start it , no use.
If i copied this to a new one then it works.
I have found few SAP note like 1078420,1083488 , but my system is already at higher patch level.
Can you please advise me something as we are facing in production frequently.
Regards,
Sandeep

Hi Sandeep,
This problem even we too faced in our project and thought of many stupid things finally found that the JDBC adapter is LOCKED.
Check in the Visual Admin >Cluster> "LOCKING ADAPTER"
we get a option of Display Locks .Check for an entry with
NAME : $XIDBAD.JDBC2XI
reset the locks and restart the CC ,now it works fine.
Note 1083488 - XI FTP/JDBC sender channel stop polling indefinitely(04/04S)
Thanks
Sudharshan

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JDBC Sender Adapter Threads and DB connections

Hello,
I have got a few questions regarding the behaviour of the JDBC sender adapter.
Suppose I have configured a short polling intervall of 10 seconds. On the first poll a message is processed. How does the JDBC sender adapter behave when there is a second poll after 10 seconds and data is available? Does it wait until the first poll has been processed completely or does it start a second thread processing a second message in parallel? If the latter is true, would a second database connection be retrieved or would both threads share one database connection? What would happen if a large number of unprocessed threads were waiting?
Kind regards,
Heiko

hi heiko,
whether the first thread is successful or not automatically a new thread is created after the polling interval.if the previous thread is accessing a data the database would lock that one for theat thread so until the lock is released the other thread has to wait for it.so you can see the thread waiting in SAP WEb GUI.There you can see a green indicator on the status column corresponding to the service.
so a new service is created after the pollling interval irrespective of the pevious service's result and it waits in the queue till its resource is otained.
configuring sender jdbc to poll a databe is not an advisable one that too this short polling interval.this will increase the queue length and obviously cause performance issues...........

JDBC sender Adapter consistency and Transaction level - URGENT

Hi,
We are using the JDBC adapter to read data from an Oracle view. The view joins two tables on their keys where flag = 0. The JDBC adapter carries out the select and then updates the selected rows with flag = 1. The transaction level used is the default, which according to XI help is TRANSACTION_SERIALIZABLE.
Our question is what happens if the oracle application that feeds the underlying tables inserts a new record in the time interval between the select statement and the update statement with flag = 0.
WILL THE UPDATE STATEMENT UPDATE EVERYTHING, EVEN THE NEWLY INSERTED RECORD??
As we are in a live environment and we have reason to believe that some records updated to FLAG = 1 are NOT sent to XI we would appreciate the expert's help on this issue!

Dimitris,
I was looking at the FAQ :JDBC Driver Snote and found this information which seems to answer ur question.
Q: If I have the following configured in a JDBC Sender:
Select Query:
SELECT column FROM TABLENAME WHERE FLAG = "TRUE"
Update Query:
UPDATE TABLENAME SET FLAG = "FALSE" WHERE FLAG = "TRUE"
How do I know that the JDBC adapter will not update newly added rows (rows that were added between the time that the SELECT and UPDATE queries were executed) that were not read in the initial SELECT query?
A: The SELECT and the UPDATE are run in the same DB transaction, i.e. both statements have the same view on the database.
Make sure that both statements use the same WHERE clause. An additional requirement for the correct operation of this scenario is the configuration of an appropriate transaction isolation level on the database (i.e., repeatable_read or serializable). You might also consider using a "SELECT FOR UPDATE" statement instead of a plain SELECT statement to ensure proper locking on the database.

Two JDBC-Sender adapter

Dear all,
I've to process all data from the first JDBC-Sender-adapter and afterwards I've to trigger the second JDBC-Sender-adapter. The second JDBC-Sender-adapter must not poll until processing of first has finished?
How can I achieve this without BPM?
Kind regards, Stefan

You can start the second JDBC channel from first interface mapping. All that you have to do is you have to set external channel control ON for second JDBC channel using RWB.
In the second interface mapping you can stop the channel, since it already pools the data. So, two individual scenarios and no BPM.
check this link @ http://help.sap.com/saphelp_nw2004s/helpdata/en/45/0c86aab4d14dece10000000a11466f/content.htm. You need to do some settings.
IN FIRST SCENARIO'S OPERATIONAL MAPPING --> STOP THE FIRST JDBC CHANNEL, START THE SECOND JDBC CHANNEL (using UDF java code)
IN SECOND SCENARIO'S OPERATIONAL MAPPING --> STOP THE SECOND JDBC CHANNEL, START THE FIRST JDBC CHANNEL (using UDF java code)
Make sure that you give enough polling time interval's for the 2 JDBC Sender channels. Actually the START & STOP mechanism's will take care.
Regards,
Praveen Gujjeti.
Edited by: Praveen Gujjeti on Apr 28, 2010 7:01 PM

JDBC Sender Adapter - NOT FETCHING RECORDS -PROCESSING STARTED

Hello all,
I have set up a JDBC sender adapter .With polling interval as 30 Seconds. Polling is done successfully
but it does not fetch the records .
Valid Data is present in the tables.In the Communication Channel Monitoring log shows :
"Processing Started"
after each poll interval.
Adding to this , it was working fine with the same parameters two days back.
I have enabled the Driver Trace but didnot get any information from Trace.
How to resolve this issue?Any help
Regards
Ganga Prasad

Hello maheshwari,
Valid Data is there & many records are there to be fetched.
One more thing Normally in the Communication Channel Monitoring
for an JDBC adapter even if there are no records to fetch we get the Log information in detail that :
Polling interval started.
Processing finished successfully
Processing started
Polling interval started.
Processing finished successfully
Processing started
But here in my case am getting only : (polling interval : is 60 Seconds)
        2/5/08 8:29:19 AM           Processing started
     2/5/08 8:28:19 AM           Processing started
     2/4/08 3:34:54 PM           Processing started
     2/4/08 3:33:54 PM           Processing started
One more observation is that my poll interval is 60 seconds but now it is polling after every 120sec
       2/5/08 11:17:31 AM           Processing started
     2/5/08 11:15:31 AM           Processing started
     2/5/08 11:13:31 AM           Processing started
     2/5/08 11:11:31 AM           Processing started
I have tried refreshing Cache but no change .
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Prasad

JDBC sender adapter, ...Processing parameters, Update SQL statement

in JDBC sender adapter, ...Processing parameters, there is an Update SQL statement field, can u tell me ...why this is required,,,,,and in one of the example scenario...it was given as <TEST>..

Sudheep,
In the sender JDBC adapter you have the select query to select data from the database.
Let us summer 2 cases,
1. You have <test> in the UPDATE . In this case, during every polling interval the JDBC adapter will end up selecting the same data from the Database. This would not be needed in most f the cases. Why would you want to select the same data over an over again?
2. If you have an update Statement in the Update field you can make sure that the data selected in the selected statement is updated so that the same rows are not selected again.
Take a look at this blog,
/people/yining.mao/blog/2006/09/13/tips-and-tutorial-for-sender-jdbc-adapter
Regards
Bhavesh

Jdbc Sender Adapter and Acks

Hi,
am I right in saying that the JDBC Sender Adapter can't request XI system level acknowledgements. Due to this it is necessary to establish an integrations process fed with the data from the sender adapter, sending it to the target system and receiving an acknowledgement?
Kind regards,
Heiko

Hi heiko,
a JDBC sender adapter cannot be configured Synchronously and so, what you are stating sounds perfect
If you want an update back to the database after execution , BPM is one way .
But, if you are looking to update some info immediately after sender adapter finishes its exectuion, then UPDATE statment can be used.
Regards,
Bhavesh

JDBC Sender Adapter - Single Select and Single Delete

Hi,
I have the requirement where I have to select the single row (or 1st row) from database through JDBC Sender Adapter and delete that record after selection in single polling.
Please help me out with proper SQL query or with any other approach.
Thanks and Regards,
Vijay

I think in SQL select statment you have something like Select TOP number....where number is 1,2..
The detailed syntax for the SELECT clause is as follows:
SELECT [ALL | DISTINCT] [TOP nExpr [PERCENT]] Select_List_Item [AS Column_Name] [, ...]
for more details...check out..
http://msdn2.microsoft.com/en-us/library/95c6ex88(VS.80).aspx
Document sent on your email id.
Nilesh

JDBC Sender Adapter Error

HI Friends,
I have configured the JDBC Sender Adapter with parameters as
Driver : oracle.jdbc.driver.OracleDriver
Connection : jdbc:oracle:thin:system:netweaver:@172.25.4.221:1521
But Iam getting an error in Componenet Monitoring:
History:
- 2006-05-30 04:55:36 UTC: Error: Stopped unexpectedly - reconfigure and activate to continue processing. Error: java.lang.NullPointerException
- 2006-05-30 04:55:36 UTC: Processing started
How to resolve this??
Regards,
Raju

Hi
Thanks for the reply.
I tried with jdbc:oracle:thin:@172.25.4.221:1521:netweaver and
jdbc:oracle:thin:@172.25.4.221:1521:system
Now Iam getting another error.
Sender Adapter v2108 for Party '', Service 'TBIT40_XI_LEGACY_BS_04':
Configured at 2006-05-30 05:12:30 UTC
History:
- 2006-05-30 05:13:00 UTC: Retry interval started. Length: 20.000 s
- 2006-05-30 05:13:00 UTC: Error: Accessing database connection 'jdbc:oracle:thin:@172.25.4.221:1521:system' failed: DriverManagerException: Cannot establish connection to URL 'jdbc:oracle:thin:@172.25.4.221:1521:system': SQLException: Io exception: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=153093376)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
- 2006-05-30 05:13:00 UTC: Processing started
Can U please solve it..
regards,
Raju

JDBC Sender Adapter to Oracle Server

Hi Friends,
Iam using JDBC Sender Adapter to connect to Oracle Server. I have mentioned all the parameters in the Configuration(sender communication channel) correctly.My Adapter Monitoring in RWB shows a message that "Processing finished successfully"...But I cannot see the data in SXMB_MONI. I mean the data is not getting picked from the Database..I have worked on the similar scenario previously and it was working fine...
I have specified the datatype structure correctly.
resultset
>row
>>field1
>>field2
wat is the problem.
regards,
raju...

Hi,
Can you check the following,
1. Check the SELECT query in your Sender JDBC adapter. Does it actually return any rows?
2. The values enterd for Documentname and DocumentNamespace in your Sender JDBC adapter. You have to enter the name of the Datatype and the namespace in these fields.
3.Have you enterd these details while doing the adapter configuration,
jdbc:oracle:thin:@<IP adress>:<listener port>:<instance name (database name)>
Driver oracle.jdbc.driver.OracleDriver
Regards,
Bhavesh

JDBC Sender Adapter - NOT FETCHING RECORDS...

Hello Experts,
I know this was answered in a separate thread (JDBC Sender Adapter - NOT FETCHING RECORDS -PROCESSING STARTED).
However, my question is, Is there a way that we can be notified if a channel has stopped fetching records?
or is there a reporting tool that can be used to check/monitor if a channel is not processing any messages?
Thanks & Kregards,
allar

Hi Sreedhar,
Thanks for your reply.
These case is not being captured by our alert configuration because its not throwing any error.
in the communication channel monitoring, we see only something like this..:
3/16/09 8:25:19 PM Processing started
3/16/09 8:34:20 PM Processing started
3/16/09 8:33:55 PM Processing started
3/16/09 8:32:54 PM Processing started
but no error is being displayed nor sent.
Also, there was a case that the channel just stopped fetching, even though everything is active.
example log:
3/12/09 8:32:54 PM Processing started
We're looking for ways on how we can trap these scenarios as early as possible, get us notified and perform adapter-lock release when needed.
Regards,
allar

JDBC sender adapter: Update before mapping

Dear all,
following scenario:
in a database we have a field called "statpi". We pick all messages that have statpi = 0 and
update the data record to statpi = 1 via UPDATE function in JDBC sender adapter.
Every select statement is limited to 100 data records for each message in PI.
But if one data record is wrong and the mapping failed, of course the complete mapping failed.
My problem: The update function of the JDBC sender adapter has already updated the
data records, although they didn't have been send to target system.
What I need is following thing: The adapter should send the messages and after PI has mapped
the message and send it to target system, the UPDATE command should be executed.
In my opinion, this is only possible with BPM, but I am not familiar with Advanced mode in JDBC
sender adapter and "Transaction isolation level". Is there any workaround for this?
Thanks
Regards
Chris

Stefan Grube wrote:>
> What happens, when new values have entered db meanwhile?
The job that change the DB will be fixed on a certain time. We need to configure
Availability Time Planning to be sure, that we start our select at another time.
>
> > In ideal case the data records are still in statpi=0 and get picked up after
> > the database team has fixed the problem and the adapter polls again.
>
> If the flag is not set, the JDBC adapter would poll the same data again and again.
The adapter should poll every hour. Of course we will have some errors before the
support is able to fix this problem, but because of one message each hour this should
not be the main problem.
> - You could do following: pass the values with an error flag, so you can handle this in receiver application,
I am using the function formatNumber for the field that could raised the error. But to chekc if I am able
to do a workaround here and let the target system fix the error sounds like an interessting possibility.
> - Do a split mapping and create a file where you drop any wrong lines
Also interessting. You mean that all "good" record should be mapped to struc1 and the bad one to struc2.
I am thinking of how to determine which record is wrong. Perhaps with an UDF that checks for this special
error.
> - Use XML validation in sender adpter, so the messages are not processed.
You are full of good ideas. I am not using validation yet and the mentioned field is define as string, but that
is changeable. A good possibility to check the new capability of 7.1.
> - use a stored procedure in DB whee you check data quality to send out.
not sure what this is, but I will discuss with DB team.

JDBC Sender Adapter

Hi everybody
I have the following error in my JDBC to JDBC scenario; I configured the JDBC sender adapter and receive the following message back. In the Configuration I set Document Name to MT_ScanningStatus:
<?xml version="1.0" encoding="utf-8" ?>
<MT_ScanningStatus>
<row>
<ScannerNb>1</ScannerNb>
<Status>0</Status>
</row>
<row>
<ScannerNb>2</ScannerNb>
<Status>2</Status>
</row>
<row>
<ScannerNb>3</ScannerNb>
<Status>0</Status>
</row>
<row>
<ScannerNb>4</ScannerNb>
<Status>2</Status>
</row>
</MT_ScanningStatus>
I defined the corresponding datatype as follow:
DT_ScanningStatus Complex Type
 row Element 1...unbounded
 ScannerNb Element 1
 STatus Element 1
In the following Mapping I tried to Map this structure to the Structure used to send an Update SQL Statement to the JDBC Receiver to update the same table. A normal Test in the Mapping Tool runs fine but when I enter under source the above incoming Message from the JDBC Adapter I got the following error. I think the incoming message cannot be interpreted. Can someone support me? I read the documentation for the JDBC adapter and also a lot of weblogs and discussion threads. Maybe someone knows a weblog describing more detailed the sender adapter and how to handle the incoming Message!!
Thanks in advance Oliver
14:58:03 Start of test
Compilation of MM_JDBC_to_JDBC_test successful
Fatal Error: com.sap.engine.lib.xml.parser.ParserException: XML Declaration not allowed here.(:main:, row:1, col:8)
com.sap.aii.utilxi.misc.api.BaseRuntimeException: Fatal Error: com.sap.engine.lib.xml.parser.ParserException: XML Declaration not allowed here.(:main:, row:1, col:8)
at com.sap.aii.mappingtool.tf3.rt.xparser.MTSaxHandler.run(MTSaxHandler.java:130)
at com.sap.aii.mappingtool.tf3.rt.xparser.XParser.run(XParser.java:68)
Root Cause:
com.sap.engine.lib.xml.parser.NestedSAXParserException: Fatal Error: com.sap.engine.lib.xml.parser.ParserException: XML Declaration not allowed here.(:main:, row:1, col:8)(:main:, row=1, col=8) -> com.sap.engine.lib.xml.parser.ParserException: XML Declaration not allowed here.(:main:, row:1, col:8)
at com.sap.engine.lib.xml.parser.XMLParser.scanPI(XMLParser.java:2009)
at com.sap.engine.lib.xml.parser.XMLParser.scanProlog(XMLParser.java:2657)
at com.sap.engine.lib.xml.parser.XMLParser.scanDocument(XMLParser.java:2713)
at com.sap.engine.lib.xml.parser.XMLParser.parse0(XMLParser.java:162)
at com.sap.engine.lib.xml.parser.AbstractXMLParser.parseAndCatchException(AbstractXMLParser.java:132)
at com.sap.engine.lib.xml.parser.AbstractXMLParser.parse(AbstractXMLParser.java:142)
at com.sap.engine.lib.xml.parser.AbstractXMLParser.parse(AbstractXMLParser.java:245)
at com.sap.engine.lib.xml.parser.Parser.parseWithoutSchemaValidationProcessing(Parser.java:276)
at com.sap.engine.lib.xml.parser.Parser.parse(Parser.java:338)
at com.sap.engine.lib.xml.parser.SAXParser.parse(SAXParser.java:125)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
at com.sap.aii.mappingtool.tf3.rt.xparser.MTSaxHandler.run(MTSaxHandler.java:128)
at com.sap.aii.mappingtool.tf3.rt.xparser.XParser.run(XParser.java:68)
at com.sap.engine.lib.xml.parser.SAXParser.parse(SAXParser.java:144)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
at com.sap.aii.mappingtool.tf3.rt.xparser.MTSaxHandler.run(MTSaxHandler.java:128)
at com.sap.aii.mappingtool.tf3.rt.xparser.XParser.run(XParser.java:68)
Caused by: com.sap.engine.lib.xml.parser.ParserException: XML Declaration not allowed here.(:main:, row:1, col:8)
at com.sap.engine.lib.xml.parser.XMLParser.scanPI(XMLParser.java:2009)
at com.sap.engine.lib.xml.parser.XMLParser.scanProlog(XMLParser.java:2657)
at com.sap.engine.lib.xml.parser.XMLParser.scanDocument(XMLParser.java:2713)
at com.sap.engine.lib.xml.parser.XMLParser.parse0(XMLParser.java:162)
at com.sap.engine.lib.xml.parser.AbstractXMLParser.parseAndCatchException(AbstractXMLParser.java:132)
at com.sap.engine.lib.xml.parser.AbstractXMLParser.parse(AbstractXMLParser.java:142)
at com.sap.engine.lib.xml.parser.AbstractXMLParser.parse(AbstractXMLParser.java:245)
at com.sap.engine.lib.xml.parser.Parser.parseWithoutSchemaValidationProcessing(Parser.java:276)
at com.sap.engine.lib.xml.parser.Parser.parse(Parser.java:338)
at com.sap.engine.lib.xml.parser.SAXParser.parse(SAXParser.java:125)
... 3 more
Fatal Error: com.sap.engine.lib.xml.parser.ParserException: XML Declaration not allowed here.(:main:, row:1, col:8)

Hi Oliver,
>>>>source the above incoming Message from the JDBC Adapter I got the following error. I think the incoming message cannot be interpreted.
do this:
in the test tab try your mapping once more
(the correct one)
then save the source xml as file
next compare this saved file with the one
you get from the jdbc sender
>>>>>Declaration not allowed here.(:main:, row:1, col:8)
and compare the first lines in those two XML files
are they the same?
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions">XI / PI FAQ - Frequently Asked Questions</a>

JDBC Sender Adapter - Transaction & Parameterized Query?

Dear Experts,
I'm curious about the JDBC sender adapter in SAP PI.
As I see from the document and have been searching in the Internet, The default procedure of the sender JDBC adapter is to first run a SELECT/Store Procedure query then update the records that have been read before.
Configuring the Sender JDBC Adapter - Advanced Adapter Engine - SAP Library
What I want to ask is:
- What is the database transaction used for the SELECT and the UPDATE? I mean what if the SELECT is successful and the records have been sent to the IE, but the UPDATE failed. This way, the next polling run, the same records could be read again. Is it possible? Are the SELECT and UPDATE query atomic (if one fails the other fails too)?
- Is it possible to have a parameterized query / stored procedure in sender JDBC adapter? Because seeing at the default procedure, there should be at least a field that will be used as a flag (for example the processed field needs to be updated to '1'). Something like:
 - SELECT * FROM table_a WHERE docno > $last_doc_no
 $last_doc_no is a paramter or variable from PI
 - EXEC sp_do_something ( $param_a, $param_b )
 $param_a, $param_b are parameters or variable in PI
Thank you,
Suwandi C.

Hi Suwandi,
all action to database are in one transaction and thats mean if one failed all failed.
And it is possible to have parameterized storied procedure. You sould send something like
<?xml version="1.0" encoding="UTF-8"?>
<ns0:mt_proc xmlns:ns0="http://aaaa">
 <statementname>
 <stProc action="EXECUTE"/>
 <TABLE>PROCEDURE NAME</TABLE>
 <access>
 <param_in isInput="1" type="some_type">input param</param_in>
 <param_out isOutput="1" type="some_type"></param_out>
 </access>
 </statementname>
</ns0:mt_proc>

JDBC Sender Adapter - Restrict number of rows fetched, Oracle

Hi,
Is it possible to restrict the number of rows fetched by the JDBC Sender adapter at each run? What would the appropriate Select and Update statements be to make sure a limited number of rows are selected and flagged as processed?
We are connecting to a Oracle RDBMS.
//Johan

hi,
have a look at this info:
about oracle and limiting number of rows
http://www.oracle.com/technology/oramag/oracle/06-sep/o56asktom.html
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions">XI / PI FAQ - Frequently Asked Questions</a>

Jdbc sender adapter hangs and starts showing "Processing Started" forever

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