PollingInterval in database adapter

Hi,
I have SOA 11g with two nodes. I have a database adapter that polls a table after every 30 seconds and perform logical delete on the rows read. I came across interesting situation. When one node is up and PollingInterval=30, it works okay and polling is done right after 30 seconds but when both nodes are up the PollingInterval property doesnt work as expected. It will poll after 24 seconds and then second node will again poll after 6 seconds (node1+node2=30 seconds in total).
Just wondering if I am missing something or doing something wrong? I want each node to run after 30 seconds (i.e only one instance after 30 seconds). My JCA file is:
<connection-factory location="eis/DB/myConn" UIConnectionName="Connection1" adapterRef=""/>
<endpoint-activation portType="MY_DATABASE_ptt" operation="receive">
<activation-spec className="oracle.tip.adapter.db.DBActivationSpec">
<property name="DescriptorName" value="MY_DATABASE.XYZTABLE"/>
<property name="QueryName" value="MY_DATABASESelect"/>
<property name="MappingsMetaDataURL" value="MY_DATABASE-or-mappings.xml"/>
<property name="PollingStrategy" value="LogicalDeletePollingStrategy"/>
<property name="MarkReadColumn" value="PROCESSED_FLAG"/>
<property name="MarkReadValue" value="P"/>
<property name="MarkUnreadValue" value="Y"/>
<property name="PollingInterval" value="30"/>
<property name="MaxRaiseSize" value="100"/>
<property name="MaxTransactionSize" value="100"/>
<property name="SequencingColumn" value="TRANSACTION_ID"/>
<property name="NumberOfThreads" value="1"/>
<property name="ReturnSingleResultSet" value="false"/>
</activation-spec>
</endpoint-activation>
</adapter-config>
Any help will be appreciated.
Thanks!

Hi,
Just have at look at this can be helpful
http://javaoraclesoa.blogspot.ca/2012/04/polling-with-dbadapter-in-clustered.html'
This reserved value (MarkReservedValue in _db.jca) causes an instance of the process to set an identifier. This identifier is skipped by the other polling instances in the cluster.*
Regards,
Tarak.

Similar Messages

"PollingInterval" paramater of Database Adapter

Hi,
The document says not to modify the paramater "PollingInterval" of the database adapter manually.
What could be the reason for this? I hope it can be modified, but this modification might require changes in some other file as well. I tried finding it out, but couldn't figure it out.
Also, one important thing to note is that, we can modify the PollingFrequency of file adapter manually.
The version of BPEL PM is 10.1.2.0.2
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Database Adapter using Logical Delete Polling Strategy not updating field

I have an ESB database adapter defined against a table. The adapter is set to use the Logical Delete Polling Strategy, and the table has an extra column defined as the "delete" field. When I register the adapter to the ESB and add a record to the table, the adapter reads the contents of the record as expected. However, 15 seconds later (that being the polling interval) it reads it again, and again 15 seconds after that, ad infinitum.
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Here is the adapter WSDL:
<?xml version="1.0" encoding="UTF-8"?>
<definitions
name="Poll_PM_LOG"
targetNamespace="http://xmlns.oracle.com/pcbpel/adapter/db/Poll_PM_LOG/"
xmlns:tns="http://xmlns.oracle.com/pcbpel/adapter/db/Poll_PM_LOG/"
xmlns:plt="http://schemas.xmlsoap.org/ws/2003/05/partner-link/"
xmlns:jca="http://xmlns.oracle.com/pcbpel/wsdl/jca/"
xmlns:pc="http://xmlns.oracle.com/pcbpel/"
xmlns:top="http://xmlns.oracle.com/pcbpel/adapter/db/top/PollPMLOG"
xmlns="http://schemas.xmlsoap.org/wsdl/">
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<schema xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http://xmlns.oracle.com/pcbpel/adapter/db/top/PollPMLOG"
schemaLocation="PollPMLOG_table.xsd"/>
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<input message="tns:LogCollection_msg"/>
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<binding name="Poll_PM_LOG_binding" type="tns:Poll_PM_LOG_ptt">
<pc:inbound_binding/>
<operation name="receive">
<jca:operation
ActivationSpec="oracle.tip.adapter.db.DBActivationSpec"
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NumberOfThreads="1"
UseBatchDestroy="false"
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<input/>
</operation>
</binding>
<service name="Poll_PM_LOG">
<port name="Poll_PM_LOG_pt" binding="tns:Poll_PM_LOG_binding">
<jca:address location="eis/DB/PM"
UIConnectionName="PM"
ManagedConnectionFactory="oracle.tip.adapter.db.DBManagedConnectionFactory"
/>
</port>
</service>
<plt:partnerLinkType name="Poll_PM_LOG_plt" >
<plt:role name="Poll_PM_LOG_role" >
<plt:portType name="tns:Poll_PM_LOG_ptt" />
</plt:role>
</plt:partnerLinkType>
</definitions>
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Oracle database Adapter polling in OSB Cluster

Hi,
I have OSB 11g with two nodes. I have a database adapter that polls a table after every 30 seconds and perform logical delete on the rows read. I came across interesting situation. When one node is up and PollingInterval=30, it works okay and polling is done right after 30 seconds but when both nodes are up the PollingInterval property doesnt work as expected.
First node will poll after 24 seconds and then second node will again poll after 6 seconds (node1+node2=30 seconds in total).
and After i restart the servers the first node is polling at 18 sec and second node is polling at 12 sec (node1 +node2=30 sec), so different polling intervals.
How does it determines the first server should poll at 24 or 18 sec and second node should poll at 6 or 12 sec?
I would like to know is there any property or configuration required to poll the table for each node for every 15 seconds (node1(15sec)+node2(15sec)=30 sec)?
Please help me, It is very urgent?
Thanks
Rajesh.

Hi,
If any one has the same issue, please let me know.
Also if you know the solution, can you please update here, it's very helpful for me.
Thanks,
Rejesh.

Logical delete in database adapter

Hello
I was wondering if someone has solution the problem with polling database. You can specify the logical delete column and you can give values for READ, UNREAD and RESERVED states. The problem is that when for example ESB project polls some specific table and starts an instance for every new row with specified logical delete field with value UNREAD, when something unexpected happens and something goes wrong the database adapter updates the row with READ value. This is problematic if we have thousands of rows, and we would like to separate the errored rows from the successfully read rows. Is there anyway (easy) way to update those rows that went wrong to some other value than READ?
I don't know if anyone understood me, but just for clarification here's a example:
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Hope I was able to clarify the problem... And I hope someone could be able to provide me with answer.
Best Regards Tuomas

Did you use the RESERVED value property? How about the transaction mechanism? Do you have global transactions? I gues you would have to use them!

Null/Empty Strings use in ESB Database Adapter

Hi
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11g Database Adapter: How to make queries using LIKE with % (possible bug?)

Hi there!
Sorry if this has been answered before, but the forum search ignores '%' so I could not find anything relevant. I'm completely at a loss here guys so any help will be really appreciated.
I've got a database adapter that executes a "pure SQL" query:
select * from supplier t
WHERE t.idsupplier = #idSupplierParam OR #idSupplierParam2 IS NULL
AND t.name like '%' || #nameParam || '%' OR #nameParam2 IS NULL
AND t.address like '%' || #addressParam || '%' OR #addressParam2 IS NULL
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When I execute my bpel passing 'sup' as nameParam and nameParam2, everything is right and I get my supplier1 in the results.
BUT if I pass 'asdfghj' as name, I still get my 'supplier1' in the results ¿¿¿???
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No, but thanks for trying. Iif you had read my post you'd had found that I wrote
+When I execute my bpel passing 'sup' as nameParam and nameParam2+
But I double checked against that just in case. I made a test query
select * from supplier t WHERE t.name like '%' || #nameParam || '%'
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Help plz!!

Use of current time for polling Database Adapter query

I am writing a simple BPEL process with a Polling Database Adapter and a Recieve. The idea is that we are polling an XE database for any entries in a TRIP table which have an expiration date/time field that has passed.
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I was unable to find a way to generate a SELECT query expression with the wizard that would allow me to use current/system time as an attribute, so I finished the wizard and edited the Toplink Descriptor to use a custom SQL expression for the query. This resulted in the following code in the toplink_mappings.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<toplink:object-persistence version="Oracle TopLink - 10g Release 3 (10.1.3.1.0) (Build 061004)"
xmlns:opm="http://xmlns.oracle.com/ias/xsds/opm" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:toplink="http://xmlns.oracle.com/ias/xsds/toplink"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<opm:name>ExpiredTripPoller</opm:name>
<opm:class-mapping-descriptors>
<opm:class-mapping-descriptor xsi:type="toplink:relational-class-mapping-descriptor">
<opm:class>ExpiredTripPoller.Trip</opm:class>
<opm:alias>Trip</opm:alias>
<opm:primary-key>
<opm:field table="TRIP" name="ID" xsi:type="opm:column"/>
</opm:primary-key>
<opm:events xsi:type="toplink:event-policy"/>
<opm:querying xsi:type="toplink:query-policy">
<opm:queries>
<opm:query name="ExpiredTripPoller" xsi:type="toplink:read-all-query">
<toplink:timeout>0</toplink:timeout>
<toplink:call xsi:type="toplink:sql-call">
<toplink:sql>SELECT ID, LPN, START_TIME, EXPIRY_TIME, STATUS FROM TRIP WHERE ((STATUS = '0') AND (EXPIRY_TIME < SYSDATE)) ORDER BY EXPIRY_TIME ASC</toplink:sql>
</toplink:call>
<toplink:reference-class>ExpiredTripPoller.Trip</toplink:reference-class>
<toplink:cache-usage>primary-key</toplink:cache-usage>
<toplink:lock-mode>none</toplink:lock-mode>
<toplink:container xsi:type="toplink:list-container-policy">
<toplink:collection-type>java.util.Vector</toplink:collection-type>
</toplink:container>
</opm:query>
<opm:query name="findAllTrip" xsi:type="toplink:read-all-query">
<toplink:timeout>0</toplink:timeout>
<toplink:reference-class>ExpiredTripPoller.Trip</toplink:reference-class>
<toplink:cache-usage>primary-key</toplink:cache-usage>
<toplink:lock-mode>none</toplink:lock-mode>
<toplink:container xsi:type="toplink:list-container-policy">
<toplink:collection-type>java.util.Vector</toplink:collection-type>
</toplink:container>
</opm:query>
</opm:queries>
<toplink:does-exist-query xsi:type="toplink:does-exist-query">
<toplink:existence-check>check-database</toplink:existence-check>
</toplink:does-exist-query>
<toplink:read-all-query xsi:type="toplink:read-all-query">
<toplink:reference-class>ExpiredTripPoller.Trip</toplink:reference-class>
<toplink:container xsi:type="toplink:list-container-policy">
<toplink:collection-type>java.util.Vector</toplink:collection-type>
</toplink:container>
</toplink:read-all-query>
</opm:querying>
<opm:attribute-mappings>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>id</opm:attribute-name>
<opm:field table="TRIP" name="ID" xsi:type="opm:column"/>
<opm:attribute-classification>java.math.BigDecimal</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>lpn</opm:attribute-name>
<opm:field table="TRIP" name="LPN" xsi:type="opm:column"/>
<opm:attribute-classification>java.lang.String</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>startTime</opm:attribute-name>
<opm:field table="TRIP" name="START_TIME" xsi:type="opm:column"/>
<opm:attribute-classification>java.sql.Timestamp</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>expiryTime</opm:attribute-name>
<opm:field table="TRIP" name="EXPIRY_TIME" xsi:type="opm:column"/>
<opm:attribute-classification>java.sql.Timestamp</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>status</opm:attribute-name>
<opm:field table="TRIP" name="STATUS" xsi:type="opm:column"/>
<opm:attribute-classification>java.math.BigDecimal</opm:attribute-classification>
</opm:attribute-mapping>
</opm:attribute-mappings>
<toplink:descriptor-type>independent</toplink:descriptor-type>
<toplink:caching>
<toplink:cache-type>weak-reference</toplink:cache-type>
<toplink:always-refresh>true</toplink:always-refresh>
</toplink:caching>
<toplink:remote-caching>
<toplink:cache-type>weak-reference</toplink:cache-type>
</toplink:remote-caching>
<toplink:instantiation/>
<toplink:copying xsi:type="toplink:instantiation-copy-policy"/>
<toplink:change-policy xsi:type="toplink:deferred-detection-change-policy"/>
<toplink:tables>
<toplink:table name="TRIP"/>
</toplink:tables>
</opm:class-mapping-descriptor>
</opm:class-mapping-descriptors>
</toplink:object-persistence>
To test I used the above custom SQL at the command line and it filtered the records by EXPIRY_TIME as expected.
When deployed, the polling process updates the STATUS file dof table entries, but all entries with status 0 regardless of EXPIRY_DATE. My modification appears to be being ignored. I was unsure as to whether the QUERY was being determined in some other way so I modified the descriptor (with the toplink expression editor) to compare against a literal time value, producing the following modified toplink_mappings.xml:
<?xml version="1.0" encoding="UTF-8"?>
<toplink:object-persistence version="Oracle TopLink - 10g Release 3 (10.1.3.1.0) (Build 061004)"
xmlns:opm="http://xmlns.oracle.com/ias/xsds/opm" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:toplink="http://xmlns.oracle.com/ias/xsds/toplink"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<opm:name>ExpiredTripPoller</opm:name>
<opm:class-mapping-descriptors>
<opm:class-mapping-descriptor xsi:type="toplink:relational-class-mapping-descriptor">
<opm:class>ExpiredTripPoller.Trip</opm:class>
<opm:alias>Trip</opm:alias>
<opm:primary-key>
<opm:field table="TRIP" name="ID" xsi:type="opm:column"/>
</opm:primary-key>
<opm:events xsi:type="toplink:event-policy"/>
<opm:querying xsi:type="toplink:query-policy">
<opm:queries>
<opm:query name="ExpiredTripPoller" xsi:type="toplink:read-all-query">
<opm:criteria operator="lessThan" xsi:type="toplink:relation-expression">
<toplink:left name="expiryTime" xsi:type="toplink:query-key-expression">
<toplink:base xsi:type="toplink:base-expression"/>
</toplink:left>
<toplink:right xsi:type="toplink:constant-expression">
<toplink:value xsi:type="xsd:date">2007-07-30</toplink:value>
</toplink:right>
</opm:criteria>
<toplink:timeout>0</toplink:timeout>
<toplink:reference-class>ExpiredTripPoller.Trip</toplink:reference-class>
<toplink:cache-usage>primary-key</toplink:cache-usage>
<toplink:lock-mode>none</toplink:lock-mode>
<toplink:container xsi:type="toplink:list-container-policy">
<toplink:collection-type>java.util.Vector</toplink:collection-type>
</toplink:container>
</opm:query>
<opm:query name="findAllTrip" xsi:type="toplink:read-all-query">
<toplink:timeout>0</toplink:timeout>
<toplink:reference-class>ExpiredTripPoller.Trip</toplink:reference-class>
<toplink:cache-usage>primary-key</toplink:cache-usage>
<toplink:lock-mode>none</toplink:lock-mode>
<toplink:container xsi:type="toplink:list-container-policy">
<toplink:collection-type>java.util.Vector</toplink:collection-type>
</toplink:container>
</opm:query>
</opm:queries>
<toplink:does-exist-query xsi:type="toplink:does-exist-query">
<toplink:existence-check>check-database</toplink:existence-check>
</toplink:does-exist-query>
<toplink:read-all-query xsi:type="toplink:read-all-query">
<toplink:reference-class>ExpiredTripPoller.Trip</toplink:reference-class>
<toplink:container xsi:type="toplink:list-container-policy">
<toplink:collection-type>java.util.Vector</toplink:collection-type>
</toplink:container>
</toplink:read-all-query>
</opm:querying>
<opm:attribute-mappings>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>id</opm:attribute-name>
<opm:field table="TRIP" name="ID" xsi:type="opm:column"/>
<opm:attribute-classification>java.math.BigDecimal</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>lpn</opm:attribute-name>
<opm:field table="TRIP" name="LPN" xsi:type="opm:column"/>
<opm:attribute-classification>java.lang.String</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>startTime</opm:attribute-name>
<opm:field table="TRIP" name="START_TIME" xsi:type="opm:column"/>
<opm:attribute-classification>java.sql.Timestamp</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>expiryTime</opm:attribute-name>
<opm:field table="TRIP" name="EXPIRY_TIME" xsi:type="opm:column"/>
<opm:attribute-classification>java.sql.Timestamp</opm:attribute-classification>
</opm:attribute-mapping>
<opm:attribute-mapping xsi:type="toplink:direct-mapping">
<opm:attribute-name>status</opm:attribute-name>
<opm:field table="TRIP" name="STATUS" xsi:type="opm:column"/>
<opm:attribute-classification>java.math.BigDecimal</opm:attribute-classification>
</opm:attribute-mapping>
</opm:attribute-mappings>
<toplink:descriptor-type>independent</toplink:descriptor-type>
<toplink:caching>
<toplink:cache-type>weak-reference</toplink:cache-type>
<toplink:always-refresh>true</toplink:always-refresh>
</toplink:caching>
<toplink:remote-caching>
<toplink:cache-type>weak-reference</toplink:cache-type>
</toplink:remote-caching>
<toplink:instantiation/>
<toplink:copying xsi:type="toplink:instantiation-copy-policy"/>
<toplink:change-policy xsi:type="toplink:deferred-detection-change-policy"/>
<toplink:tables>
<toplink:table name="TRIP"/>
</toplink:tables>
</opm:class-mapping-descriptor>
</opm:class-mapping-descriptors>
</toplink:object-persistence>
On deployment, this version of the BPEL process behaved as expected - only modifying the records with EXPIRY_TIME less thatn the literal time specified. (Also, I can't really pass in the time as a parameter as this is a polling model).
Can anyone shed any light on what is happening or suggest how I might go about polling in the desired way?
Cheers

Please take a look at this article which states SYSDATE is not supported in a
where clause.
http://www.oracle.com/technology/pub/articles/bpel_cookbook/qualcomm-bpel.html
Excerpt from the article:
Here are three important things you should do in implementing the above design:
Have the status of the record being processed stored in the database. The status includes the process state, next process attempt time, and processing attempt count.
Create an updatable view that exposes only records that are ready to be processed. A view is needed because the database adapter cannot handle a where clause that compares against SYSDATE.
Design logic that determines if a process instance that has faulted should be retried and when the retry should occur. This information will be updated in the database by use of a stored procedure. This can also be done with an update partner link and additional logic in BPEL.
mahalo,
a iii

How to delete the content of a datatable by the "Database Adapter"

Hello,
i want to delete all entries in a table by a database adapter - like "DELETE FROM table" in SQL. (Oracle SOA Suite 11g SR1, with Oracle DB over JDBC))
When i create a new Database adapter i can select standard functions for "insert, select, delete". The function delete does have the disadvantage, that it needs a input message with the key values of the data entry which have to be deleted, which i don't have and don't want to get.
So i tried the "Pure SQL" mode for the adapter with the SQL string "DELETE FROM table" but this instruction is somehow not commited to the database.
My questions are:
- Is there any commit needed for the pure sql instructions? How is the syntax to write several SQL instructions for one Database Adapter?
- Does anyone have another solution to delete the entries?
Thanx in advance
Tobias

Hi Shishir,
it is a pretty simple example. I think the problem is that the Database Adapter is not commiting.
The BPEL is simple sending an empty message to the adapter which should trigger the SQL execution (See Code below)
The PURE SQL String i'm using is "DELETE FROM table"
Thanks Tobias
<?xml version = "1.0" encoding = "UTF-8" ?>

<process name="BPELProcess1"
targetNamespace="http://xmlns.oracle.com/App_DWH_Prototype/TestDELETE/BPELProcess1"
xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:client="http://xmlns.oracle.com/App_DWH_Prototype/TestDELETE/BPELProcess1"
xmlns:ora="http://schemas.oracle.com/xpath/extension"
xmlns:oraext="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc"
xmlns:xpath20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20"
xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap"
xmlns:ui="http://xmlns.oracle.com/soa/designer/"
xmlns:task="http://xmlns.oracle.com/bpel/workflow/task"
xmlns:taskservice="http://xmlns.oracle.com/bpel/workflow/taskService"
xmlns:wfcommon="http://xmlns.oracle.com/bpel/workflow/common"
xmlns:wf="http://schemas.oracle.com/bpel/extension/workflow"
xmlns:xdk="http://schemas.oracle.com/bpel/extension/xpath/function/xdk"
xmlns:dvm="http://www.oracle.com/XSL/Transform/java/oracle.tip.dvm.LookupValue"
xmlns:xref="http://www.oracle.com/XSL/Transform/java/oracle.tip.xref.xpath.XRefXPathFunctions"
xmlns:bpelx="http://schemas.oracle.com/bpel/extension"
xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:ns1="http://xmlns.oracle.com/pcbpel/adapter/db/App_DWH_Prototype/TestDELETE/TestDelete%2F"
xmlns:ns2="http://xmlns.oracle.com/pcbpel/adapter/db/top/TestDelete">

<partnerLinks>

<partnerLink name="bpelprocess1_client" partnerLinkType="client:BPELProcess1" myRole="BPELProcess1Provider" partnerRole="BPELProcess1Requester"/>
<partnerLink name="TestDelete" partnerRole="TestDelete_role"
partnerLinkType="ns1:TestDelete_plt"/>
</partnerLinks>

<variables>

<variable name="inputVariable" messageType="client:BPELProcess1RequestMessage"/>

<variable name="outputVariable" messageType="client:BPELProcess1ResponseMessage"/>
<variable name="Invoke_1_delete_InputVariable"
messageType="ns1:TActIngredientCollection_msg"/>
</variables>

<sequence name="main">

<receive name="receiveInput" partnerLink="bpelprocess1_client" portType="client:BPELProcess1" operation="process" variable="inputVariable" createInstance="yes"/>

<assign name="Assign_1">
<copy>
<from expression="''"/>
<to variable="Invoke_1_delete_InputVariable"
part="TActIngredientCollection"
query="/ns2:TActIngredientCollection/ns2:TActIngredient/ns2:plotNo"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/client:process/client:input"/>
<to variable="outputVariable" part="payload"
query="/client:processResponse/client:result"/>
</copy>
</assign>
<invoke name="Invoke_1" inputVariable="Invoke_1_delete_InputVariable"
partnerLink="TestDelete" portType="ns1:TestDelete_ptt"
operation="delete"/>
<invoke name="callbackClient" partnerLink="bpelprocess1_client" portType="client:BPELProcess1Callback" operation="processResponse" inputVariable="outputVariable"/>
</sequence>
</process>

How to use Database adapter as inbound adapter without having polling strategies?

Hi All,
I have a requirement wherein I have to use Database adapter to retrieve the data for every half an hour from one(X app) database and update that data into another application(Y app) .That database adapter will be along with BPEL process.My Flow would be like this:
Database Adapter( In 'exposed services' section) ----->   BPEL (in 'Components') -----> Y app service( in 'External References' section)
My questions for each step are below
     1) I have to retrieve the data from database(x app database) for every half an hour.So I have to schedule my whole process such that it should execute for every half an hour.
Means I have to get whatever the data is updated in the last half an hour in that database.
      The database adapter should be inbound in SOA composite editor(in 'Exposed services' section).
But in order to have inbound adapter,we have select the 'Poll for New or Changed Records in a Table' option in turn we have to select one of polling operations below:
         Delete the Row(s) that were Read
Update a Field in the [Table_Name] Table (Logical Delete)
Update a Sequencing Table
Update an External Sequencing Table on a Different Database
Control Table Strategy
But the problem is I don't have any control on the database(X app database) ,So (I can't update any data on that table,because that table may not have a field or table to update the processed rows)I can't choose any of the above operations.
How can I achieve what I want that is to retrieve the data and schedule the process?
Thanks in advance.

Hi Heckler,
Thank you very much for your answer that I can proceed further somehow.
I still need to have some clarifications.
In order to have a process which retrieves the data (Inbound operation) and updates the data into other application, the data(from X app) should be the request(through DB adapter) of the BPEL process.
X app does not do anything to send.We have(the BPEL process) to receive the data (or) no event is triggered.
The flow :
Database Adapter( In 'exposed services' section to retrieve data) ----->   BPEL (in 'Components') -----> Y app service( in 'External References' section)
How can we ensure the data will be request to BPEL process(means it will be in 'exposed services' section in SOA composite editor) for every half an hour if we use pick activity and database adapter as first activity?
When we use ''Poll for New or Changed Records in a Table' ,then only adapter becomes inbound and comes into the 'exposed services' section.I can't use it as I don't have any control on the source table.
I have this confusion before starting the process.Please help me to clear out the doubts.
And this whole process should be executed automaticallly for every half an hour(means it creates instance for every half an hour) Once we build the BPEL process.
How to schedule it?
And where do I need to create control table ?You mean I have to use some different database where in I have to create the table?

How to use Database Adapter in BPEL

I want to use Database Adapter in BPEL to transfer data from one table to other table and the data is still hold in the read table?
I can find a example from http://download.oracle.com/docs/cd/B31017_01/integrate.1013/b28994/adptr_db.htm#BDCIGDCB.
And the general design of my BPEL is as following:
1. Add a "status" column to the read table. And alter the value of status column of all data in read table to "unreaded".
2. Then create a empty BPEL (BPELAdapter) Project.
3. Add a Database Adapter:
(1) In step 1 of Adapter Configuration Wizard, configure the Service Name to datain.
(2) In step 2, configure the database connection.
(3) In step 3, choose "Poll for New or Changed Records in a Table".
(4) Then click Import Tables button, and choose the read table.
(5) In step 5, choose a column.
(6) Don’t do anything in step 6 and 7.
(7) In step 8, choose "Update a Field in the [Datain] Table (Logical Delete)".
(8) In step 9, configure Logical Delete Field to STATUS, configure Read Value to readed and configure Unread Value to unreaded.
(9) Don’t do anything in step 10 and 11.
4. Add a receive activity to connect to above database adapter.
5. Add another Database Adapter. Then configure this database adapter service WSDL:
(1) In step 1 of Adapter Configuration Wizard, configure the Service Name to dataout.
(2) In step 2, configure the database connection.
(3) In step 3, choose Perform an Operation on a Table (and all items under it).
(4) Then click Import Tables button, and choose the write table.
(5) In step 5, choose a column.
(6) Don’t do anything in step 6, 7 and 8.
6. Add a invoke activity to connect to above database adapter.
7. Add a assign activity between the receive activity and invoke activity. And configure the assign copy operation.
But after I deploy this BPEL project to the BPEL server and invoke this project, I get following error. Meanwhile, this BPEL don't take effect.
The following exception occured while processing this request:
Can't find partnerLinkType 2.
in
"file:/D:/soft/SOASuite/product/10.1.3.1/OracleAS_1/bpel/domains/default/tmp/.bpel_BPELAdapter_1.0_e82210b05e4d3e997eed581d0d220293.tmp/_BPELAdapter.wsdl" WSDL to find PartnerLinkType "{http://xmlns.oracle.com/pcbpel/adapter/db/datain/datain_plt"。
How to resolve?
Thanks,
Melody

Now, I can insert data into the table through Database Adapter.
But still can't select data from the table through Database Adapter.
Above error still happen when invoke the read database table with Database Adapter project:
Can't find partnerLinkType 2.
in
"file:/D:/soft/SOASuite/product/10.1.3.1/OracleAS_1/bpel/domains/default/tmp/.bpel_BPELAdapter_1.0_e82210b05e4d3e997eed581d0d220293.tmp/_BPELAdapter.wsdl" WSDL to find PartnerLinkType "{http://xmlns.oracle.com/pcbpel/adapter/db/datain/datain_plt"。

Error while invoking custom API using Database Adapter

Hi,
I've a requirement where in I need to fetch the data returned by a recordtype of a custom API. I've implemented this by invoking the custom API using Database Adapter. I'm facing a problem while performing this.
The custom API holds the signature as:
PROCEDURE EMP_DET
Argument Name Type      In/Out Default?
P_DEPTNO NUMBER IN
L_LINE_TBL TABLE OF RECORD OUT
I've a schema with which it needs to be validated. It looks like:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:po="http://www.mycompany.com/ns/sales" targetNamespace="http://www.mycompany.com/ns/sales" elementFormDefault="qualified">
<element name="EmployeeDetails">
<complexType>
<sequence>
<element name="EmpNo" type="integer"/>                    <element name="EName" type="string"/>                    <element name="Job" type="string"/>                    <element name="Mgr" type="integer"/>                    <element name="HireDate" type="date"/>                    <element name="Sal" type="decimal"/>                    <element name="Comm" type="decimal"/>               </sequence>
</complexType>
</element>
</schema>
I did a transformation to the above stated Emp.xsd with the xsd created for my custom API by the BPEL process. I could create the process and deploy successfully, but while invoking I get the following error. (I'm using BPM 10.1.3.1 with JDev 10.1.3.1)
<remoteFault xmlns="http://schemas.oracle.com/bpel/extension"><part name="code"><code>6502</code>
</part><part name="summary"><summary>file:/D:/OraBPEL/bpel/domains/default/tmp/.bpel_my_poc_1.0_16c5d0f7b937c780d27d8975726a15cb.tmp/emp_details.wsdl [ emp_details_ptt::emp_details(InputParameters,OutputParameters) ] - WSIF JCA Execute of operation 'emp_details' failed due to: Error while trying to prepare and execute an API.
An error occurred while preparing and executing the SCOTT.BPEL_EMP_DETAILS.EMP_PKG$EMP_DET API. Cause: java.sql.SQLException: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at line 1
[Caused by: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at line 1
; nested exception is:
     ORABPEL-11811
Error while trying to prepare and execute an API.
An error occurred while preparing and executing the SCOTT.BPEL_EMP_DETAILS.EMP_PKG$EMP_DET API. Cause: java.sql.SQLException: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at line 1
[Caused by: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at line 1
Check to ensure that the API is defined in the database and that the parameters match the signature of the API. Contact oracle support if error is not fixable.
</summary>
</part><part name="detail"><detail>
Internal Exception: java.sql.SQLException: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at "SCOTT.BPEL_EMP_DETAILS", line 1
ORA-06512: at line 1
Error Code: 6502</detail>
</part></remoteFault>
Can someone let me know as to why I'm getting this error? Also lemme know if such an approach is valid to do, if not please suggest me alternate methods to do this.
Thanks in advance,
Gayathri

The 'numeric or value error' is one we have seen many times. The problem has been identified and fixed. Refer to this thread for more information.
Issue with DB Adapter - ORABPEL-11811

Problems while compiling a project that uses Database Adapter

Hi,
I am working on a small WebService that uses the Database Adapter to connect with the Oracle-Lite database. The process is a synchronous process which has client and DatabaseService as the partner link. The goal of this project is to get two inputs from the user and send it over to the DatabaseService for it to select the rows from the table based on the inputs sent. The process activity has an invoke function which had two varibles Invoke_1_inputVarible and Invoke_1_outputVarible. I have included the *.xds that contains the database schema. When I compile the project i get the following error
Error(38): [Error ORABPEL-10035]: wrong messageType [Description]: in line 38 of "D:\OraBPELPM_2\integration\jdev\jdev\mywork\Workspace1\Login\Login.bpel", messageType "{http://xmlns.oracle.com/pcbpel/adapter/db/ds/}EmployeeRole_msg" of variable "Invoke_1_dsSelect_InputVariable" does not match the expected messageType "{http://xmlns.oracle.com/pcbpel/adapter/db/ds/}dsSelect_inparameters" in <invoke>. [Potential fix]: make sure the correct variable is used in invoke.
My question is how do I assign correct messageType for the variables.
XSD File:
<?xml version = '1.0' encoding = 'UTF-8'?>
<xs:schema targetNamespace="http://xmlns.oracle.com/pcbpel/adapter/db/top/Login" xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/top/Login" elementFormDefault="unqualified" attributeFormDefault="unqualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="EmployeeRoleCollection" type="EmployeeRoleCollection"/>
<xs:element name="EmployeeRole" type="EmployeeRole"/>
<xs:complexType name="EmployeeRoleCollection">
<xs:sequence>
<xs:element name="EmployeeRole" type="EmployeeRole" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="EmployeeRole">
<xs:sequence>
<xs:element name="empid" type="xs:decimal" minOccurs="0" nillable="true"/>
<xs:element name="password" type="xs:string" minOccurs="0" nillable="true"/>
<xs:element name="role" type="xs:string" minOccurs="0" nillable="true"/>
<xs:element name="uid" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:element name="findAllInputParameters" type="findAll"/>
<xs:complexType name="findAll">
<xs:sequence/>
</xs:complexType>
<xs:element name="dsSelectInputParameters" type="dsSelect"/>
<xs:complexType name="dsSelect">
<xs:sequence/>
</xs:complexType>
</xs:schema>
DatabaseService.wsdl
<?xml version="1.0" encoding="UTF-8"?>
<definitions
>
<types>
<schema xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http://xmlns.oracle.com/pcbpel/adapter/db/top/Login"
schemaLocation="EmployeeRole_table.xsd"/>
</schema>
</types>
<message name="EmployeeRoleCollection_msg">
<part name="EmployeeRoleCollection" element="top:EmployeeRoleCollection"/>
</message>
<message name="dsSelect_inparameters">
<part name="dsSelect_inparameters" element="top:dsSelectInputParameters"/>
</message>
<message name="EmployeeRole_msg">
<part name="EmployeeRole" element="top:EmployeeRole"/>
</message>
<portType name="ds_ptt">
<operation name="dsSelect">
<input message="tns:dsSelect_inparameters"/>
<output message="tns:EmployeeRoleCollection_msg"/>
</operation>
<operation name="queryByExample">
<input message="tns:EmployeeRole_msg"/>
<output message="tns:EmployeeRoleCollection_msg"/>
</operation>
</portType>
<binding name="ds_binding" type="tns:ds_ptt">
</binding>
<service name="ds">
<port name="ds_pt" binding="tns:ds_binding">
<jca:address location="eis/DB/BPELSamples"
/>
</port>
</service>
</definitions>
<b>Login.bpel</b>
<process name="Login" targetNamespace="http://xmlns.oracle.com/Login" xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/" xmlns:xp20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20" xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/" xmlns:ns1="http://xmlns.oracle.com/pcbpel/adapter/db/ds/" xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns2="http://xmlns.oracle.com/pcbpel/adapter/db/top/Login" xmlns:client="http://xmlns.oracle.com/Login" xmlns:bpelx="http://schemas.oracle.com/bpel/extension" xmlns:ora="http://schemas.oracle.com/xpath/extension" xmlns:orcl="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc">
<partnerLinks>
<partnerLink name="client" partnerLinkType="client:Login" myRole="LoginProvider"/>
<partnerLink name="PartnerLink_1" partnerRole="ds_role" partnerLinkType="ns1:ds_plt"/>
</partnerLinks>
<variables>
<variable name="inputVariable" messageType="client:LoginRequestMessage"/>
<variable name="outputVariable" messageType="client:LoginResponseMessage"/>
<variable name="Invoke_1_dsSelect_InputVariable" messageType="ns1:EmployeeRole_msg"/>
<variable name="Invoke_1_dsSelect_OutputVariable" messageType="ns1:EmployeeRoleCollection_msg"/>
</variables>
<sequence name="main">
<receive name="receiveInput" partnerLink="client" portType="client:Login" operation="process" variable="inputVariable" createInstance="yes"/>
<assign name="Assign_1">
<copy>
<from variable="inputVariable" part="payload"/>
<to variable="Invoke_1_dsSelect_InputVariable" query="/ns2:EmployeeRole"/>
</copy>
</assign>
<invoke name="Invoke_1" partnerLink="PartnerLink_1" portType="ns1:ds_ptt" operation="dsSelect" inputVariable="Invoke_1_dsSelect_InputVariable" outputVariable="Invoke_1_dsSelect_OutputVariable"/>
<assign name="Assign_2">
<copy>
<from variable="Invoke_1_dsSelect_OutputVariable" part="EmployeeRoleCollection"/>
<to variable="outputVariable" part="payload"/>
</copy>
</assign>
<reply name="replyOutput" partnerLink="client" portType="client:Login" operation="process" variable="outputVariable"/>
</sequence>
</process>
Thanks,
Niv

Help! SOS....
Niv

Error retrieving record through database adapter. (ORABPEL-11614)

Am trying to pass a customer name into a database adapter to retrieve customer info. It is working, but it is also faulting.
When I invoke the process with the name "3M COMPANY", I get the following audit message
[2008/06/05 17:36:01] Faulted while invoking operation "GetCustomerDataSelect_paramName" on provider "GetCustomerData".less
-<messages>
-<input>
-<customerName>
-<part xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="GetCustomerDataSelect_paramName_inparameters">
-<GetCustomerDataSelect_paramNameInputParameters xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/top/GetCustomerData">
<paramName>3M COMPANY
</paramName>...
WSIF JCA Execute of operation 'GetCustomerDataSelect_paramName' failed due to: DBReadInteractionSpec Execute Failed Exception.
Query name: [GetCustomerDataSelect], Descriptor name: [GetCustomerData.Cstcgvmp].
; nested exception is:
     ORABPEL-11614
DBReadInteractionSpec Execute Failed Exception.
Query name: [GetCustomerDataSelect], Descriptor name: [GetCustomerData.Cstcgvmp].
See root exception for the specific exception. Caused by Exception [TOPLINK-6044] (Oracle TopLink - 10g Release 3 (10.1.3.1.0) (Build 061004)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRecord(
     => 101
     => A
     => 3M COMPANY
     => 3M CENTER
     => SAINT PAUL
     => MN
     => 551441000
     => 22)] during the execution of the query was detected to be null. Primary keys must not contain null.
Query: ReadAllQuery(bpel___localhost_default_Onboarding_1_0__MD5_8f8d9220a0bc6957be6fb657cf4ffabd_.GetCustomerData.Cstcgvmp).
</summary ...
The retrieved data is correct. The Database Adapter is pointing to an AS/400 table which does not have primary keys defined. In the offline database, I've defined CGVMSTCST to be the primary key.
The toplink_mappings.xml reflects that:
<opm:alias>Cstcgvmp</opm:alias>
<opm:primary-key>
<opm:field table="CSTCGVMP" name="CGVMSTCST" xsi:type="opm:column"/>
</opm:primary-key>
The value of this field for 3M is 101 (which was correctly picked up).
Why am I getting a primary key is null error?

I did, but I'm not sure how.
I deleted the Database Adapter and the associated offline file and reran the wizard (having a better idea of how to implement a parameter search) and it worked.
I was not able to identify what was created differently the second time.

DataBase Adapter Issue

Hi all,
When i try to query the table using the Database adapter , i m getting the following error message
*" ORA-04030 : out of process memory when trying to allocate 2024 bytes( kxs-heap-c,kghsstk)* "
Experts please post the possible resolution for this issue..
Thanks in Advance,
Karthik

Hi-
Is the Database and Weblogic installed on same machine ??
When you execute queries from SQL worksheet this is the only program that is consuming memory..
But when you run from DB Adapter both your adapter and database consumes the memory and datbase is not able to get the required memory to run the script..
I am not quite sure of the issue, u can check the task manager and find it out when executing the program

PollingInterval in database adapter

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