LAdO ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-8511 ( https://hibernate.atlassian.net/browse/HHH-8511?atlOrigin=eyJpIjoiZDkyNTN... ) Re: "Can't convert fromnull" when inserting clob in Informix ( https://hibernate.atlassian.net/browse/HHH-8511?atlOrigin=eyJpIjoiZDkyNTN... ) The same error occurred in the latest Hibernate master branch (5.5.0-SNAPSHOT) when using Informix JDBC Driver version 3.70.JC8. Caused by: java.sql.SQLException: Can't convert fromnull at com.informix.util.IfxErrMsg.getSQLMinorException(IfxErrMsg.java:547) at com.informix.jdbc.IfxObject.fromCharacterStream(IfxObject.java:706) at com.informix.jdbc.IfxValue.a(IfxValue.java:929) at com.informix.jdbc.IfxPreparedStatement.setCharacterStream(IfxPreparedStatement.java:4440) at org.hibernate.type.descriptor.sql.ClobTypeDescriptor$3$1.doBind(ClobTypeDescriptor.java:129) at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:73) at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:276) at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:271) at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:39) at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2948) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3245) ... 34 more @Lars Blomenkamp's suggestion helped with this version @Override public boolean useInputStreamToInsertBlob () { return false ; } Conversely, when using the Informix JDBC Driver version 4.10.JC12, everything is OK. If useInputStreamToInsertBlob () returns false, the database returns incorrect data. java.lang.AssertionError: Expected: is "xxxxxxxxxx" but: was " xxxxxxxxxx" The unit test is in the attachment InformixLobStringTest.java ( https://hibernate.atlassian.net/secure/attachment/49703/49703_InformixLob... ) ( https://hibernate.atlassian.net/browse/HHH-8511#add-comment?atlOrigin=eyJ... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-8511#add-comment?atlOrigin=eyJ... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100129- sha1:b514962 )