Oracle BI Write Back on NULL values - Write Back Error

Question

Hi together,
Write Back Error
An error occurred while writing to the server. Please check to make sure you have entered appropriate values. If the problem persists, contact your system administrator
I receive this message when I try to make a update of an null value in the database.
update value on value or value to null works fine. So the XML Message is working on production.
Is this a BUG?
Regards,
Stefan
<?xml version="1.0" encoding="utf-8" ?>
<WebMessageTables xmlns:sawm="com.siebel.analytics.web/message/v1">
<WebMessageTable lang="en-us" system="WriteBack" table="Messages">
<WebMessage name="SetWriteBackGKV">
<XML>
<writeBack connectionPool="QS_DWH_DB">
<insert> </insert>
<update>UPDATE QS_DWH.CKVB_HR_EXTERNAL SET CKVB_HR_EXTERNAL.GKV_SICKNESS_PERC = '@{c7}' WHERE CKVB_HR_EXTERNAL.D_TIME ='@{c5}'</update>
     </writeBack>
</XML>
</WebMessage>
</WebMessageTable>
</WebMessageTables>

Answer 1

Hi,
http://gerardnico.com/wiki/dat/obiee/write_back -- recheck your configuration following this link step by step with screen shots.
Note : The Problem Occurred two ways,
1. Problem your XMl Script
2. If null value not present in your columns in your table in the database.The problem is occured.
please check below steps.
1. Are you using OCI or ODBC in your connection pool? Try it with OCI Call Interface 11g.
2.Remove the commit tag from the XML file.
<postUpdate>COMMIT</postUpdate>
=============================================================================================================
This xml file working for me.
Insert--
A couple of small adjustments got your XML to work here:
<?xml version="1.0"; encoding="utf-8"?>
<WebMessageTables xmlns:sawm="com.siebel.analytics.web/message/v1";>
<WebMessageTable lang="en-us" system="WriteBack" table="Messages">
<WebMessage name="WriteBack">
<XML>
<writeBack connectionPool="Connection Pool">
<insert> INSERT INTO FACT (PRICE,PRODUCT_KEY,REGION_KEY,SALE_UNIT,TIMEKEY,SALES_QUOTA)
values (@{c7},@{c8},@{c9},@{c10},@{c11},@{c5} ) </insert>
<update> </update>
</writeBack>
</XML>
</WebMessage>
</WebMessageTable>
</WebMessageTables>
The <writeBack> tag is written with a lower case "w".
The "connetionPool" needs an upper case "P".
Update--
I think that you have to specify also an SQL statement for the update tag, for example:
<?xml version="1.0"; encoding="utf-8"?>
<WebMessageTables xmlns:sawm="com.siebel.analytics.web/message/v1";>
<WebMessageTable lang="en-us" system="WriteBack" table="Messages">
<WebMessage name="pmet_update">
<XML>
<writeBack connectionPool="PMTCOG">
<insert> select null from dual</insert>
<update> UPDATE XREF_PMET_URL SET URL= '@{c1}' WHERE API='@{c0}'</update>
</writeBack>
</XML>
</WebMessage>
</WebMessageTable>
</WebMessageTables>
The witeback wants for both the tags (<insert></insert> and <update></update>) an SQL Statement.
Hope this help's
Thanks
Satya