Cannot obtain an appropriate JDBC type for class char.

[Former Member]

The above error while deploying...The full error is below. The only datatypes used are: integer, timestamp,string, decimal and date (so no char). Can anybody help?

Caught exception during application deployment from SAP J2EE Engine's deploy service:

java.rmi.RemoteException: Cannot deploy application sap.com/SAPAS12013.. Reason: Cannot obtain an appropriate JDBC type for class char. To store the field with this class in the database, the class must implement java.io.Serializable.; nested exception is: com.sap.engine.services.deploy.container.DeploymentException: <--Localization failed: ResourceBundle='com.sap.engine.services.deploy.DeployResourceBundle', ID='com.sap.engine.services.ejb.exceptions.deployment.EJBDeploymentException: Cannot obtain an appropriate JDBC type for class char. To store the field with this class in the database, the class must implement java.io.Serializable.

at com.sap.engine.services.ejb.deploy.tools.sql.Mappings.getDefaultSqlTypeForJavaType(Mappings.java:131)

at com.sap.engine.services.ejb.deploy.xml.CMPParser.fillCmpFieldInfo(CMPParser.java:89)

at com.sap.engine.services.ejb.deploy.xml.CMPParser.parseCMPFields(CMPParser.java:644)

at com.sap.engine.services.ejb.deploy.xml.CMPParser.parseFields(CMPParser.java:121)

at com.sap.engine.services.ejb.deploy.xml.EJBJarParser.parseXml(EJBJarParser.java:173)

at com.sap.engine.services.ejb.deploy.xml.EJBJarParser.parseXml(EJBJarParser.java:97)

at com.sap.engine.services.ejb.deploy.DeployAdmin.parseSingleJar(DeployAdmin.java:296)

at com.sap.engine.services.ejb.deploy.DeployAdmin.generate(DeployAdmin.java:246)

at com.sap.engine.services.ejb.EJBAdmin.deploy(EJBAdmin.java:2118)

at com.sap.engine.services.deploy.server.application.DeploymentTransaction.makeComponents(DeploymentTransaction.java:594)

at com.sap.engine.services.deploy.server.application.DeployUtilTransaction.commonBegin(DeployUtilTransaction.java:379)

at com.sap.engine.services.deploy.server.application.DeploymentTransaction.begin(DeploymentTransaction.java:296)

at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:290)

at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhases(ApplicationTransaction.java:323)

at com.sap.engine.services.deploy.server.DeployServiceImpl.makeGlobalTransaction(DeployServiceImpl.java:3033)

at com.sap.engine.services.deploy.server.DeployServiceImpl.deploy(DeployServiceImpl.java:463)

at com.sap.engine.services.deploy.server.DeployServiceImplp4_Skel.dispatch(DeployServiceImplp4_Skel.java:1555)

at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:294)

at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:183)

at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:119)

at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:37)

at com.sap.engine.core.cluster.impl6.session.UnorderedChannel$MessageRunner.run(UnorderedChannel.java:71)

at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)

at java.security.AccessController.doPrivileged(Native Method)

at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:94)

at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:162)

[Vlado · Accepted solution]

Hi Ashley,

And yet, apparently you have a cmp-field with type <b>char</b> in one of your CMP entity beans. This is not supported. Please refer to the <a href="http://help.sap.com/saphelp_nw04/helpdata/en/13/dbb2b66146934a9662918755038ea1/frameset.htm">Object/Relational Mapping Rules</a> and especially to the first bullet under the table.

Hope that helps!

Vladimir

[Former Member · Accepted solution]

You are right - I did find one! Thanks!