when trying to extend a VO actually it’s extended successfully but when i trying to search for more than one time inside LOV page this exception is throwing
java.sql.SQLException: Invalid column type
and this full error message:

oracle.apps.fnd.framework.OAException: oracle.jbo.SQLStmtException:
JBO-27122: SQL error during statement preparation.
Statement: select * from (SELECT p.person_id
 ,p.full_name
 ,a.organization_id
 ,a.assignment_type
 ,past.per_system_status status
 ,p.email_address
 ,org.name org_name
 ,p.employee_number
 ,p.npw_number
FROM per_people_f p
 ,per_assignments_f a
 ,hr_organization_units org
 ,per_assignment_status_types past
WHERE a.person_id = p.person_id
AND a.assignment_status_type_id = past.assignment_status_type_id
AND past.per_system_status IN ('ACTIVE_ASSIGN', 'ACTIVE_CWK')
AND a.primary_flag = 'Y'
AND trunc (sysdate) BETWEEN p.effective_start_date AND p.effective_end_date
AND trunc (sysdate) BETWEEN a.effective_start_date AND a.effective_end_date
AND a.assignment_type IN ('E', 'C')
AND a.organization_id = org.organization_id
AND email_address IS NOT NULL) QRSLT
where (( UPPER(full_name) like UPPER(:1) AND (full_name like :1 OR ADDRESS1
like :1 OR full_name like :1 OR full_name like :1)))
at oracle.apps.fnd.framework.OAException.wrapperException
(OAException.java:896)
at oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException
(OAPageErrorHandler.java:1169)
at oracle.apps.fnd.framework.webui.OAPageErrorHandler.processErrors
(OAPageErrorHandler.java:1435)
at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest
(OAPageBean.java:2867)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage
(OAPageBean.java:1840)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage
(OAPageBean.java:538)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage
(OAPageBean.java:426)
at _OA._jspService(_OA.java:212)
at com.orionserver.http.OrionHttpJspPage.service
(OrionHttpJspPage.java:59)
at oracle.jsp.runtimev2.JspPageTable.service
(JspPageTable.java:379)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.evermind.server.http.ResourceFilterChain.doFilter
(ResourceFilterChain.java:64)
at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter
(ReleaseResFilter.java:26)
at com.evermind.server.http.EvermindFilterChain.doFilter
(EvermindFilterChain.java:15)
at oracle.apps.fnd.security.AppsServletFilter.doFilter
(AppsServletFilter.java:318)
at com.evermind.server.http.ServletRequestDispatcher.invoke
(ServletRequestDispatcher.java:621)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal
(ServletRequestDispatcher.java:370)
at com.evermind.server.http.HttpRequestHandler.doProcessRequest
(HttpRequestHandler.java:871)
at com.evermind.server.http.HttpRequestHandler.processRequest
(HttpRequestHandler.java:453)
at com.evermind.server.http.AJPRequestHandler.run
(AJPRequestHandler.java:313)
at com.evermind.server.http.AJPRequestHandler.run
(AJPRequestHandler.java:199)
at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run
(ServerSocketReadHandler.java:260)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run
(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:619)
## Detail 0 ##
java.sql.SQLException: Invalid column type
at oracle.jdbc.driver.OraclePrepareStatement.setObjectCritical
(OraclePreparedStatement.java:8516)
at oracle.jdbc.driver.OraclePreparedStatement.setObjectInternal
(OraclePreparedStatement.java:8034)
at oracle.jdbc.driver.OraclePreparedStatement.setObjectInternal
(OraclePreparedStatement.java:8767)
at oracle.jdbc.driver.OraclePreparedStatement.setObject
(OraclePreparedStatement.java:8748)...

Please help…