I have a problem with Ingres database and byte[] mapping. I use byte[] without a @LOB annotation.

public setMasterMac(byte[] masterMac)

{ this.masterMac = masterMac; }

When I try to insert a value into the databese (the column is of type "long binary") I got error

Caused by: java.lang.ClassCastException: [B
at org.hibernate.type.ByteType.set(ByteType.java:38)
at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:62)
at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:39)

The error message "... Ecxeption: [B" is strange. What means "[B". Why can't I insert a byte[] value into database? A pure JDBC test case with PreparedStatement.setBytes() works fine.