OJB Problem

Hi,


i'm a beginner with ojb. I had in the past an Debian Sarge with MYSQL Sserver, what is working fine with my java app (and ojb).
Now we had change the server to an ubuntu system.The Java app has not been changegd, but i get errors like shown below.
The interesting thing is the "fieldname" and witch big maxKey and CurrentKey.
Hope, anybody can help me.

Hans


ObjectCache: org.apache.ojb.broker.metadata.ObjectCacheDescriptor@5f8172[ObjectCache=class org.apache.ojb.broker.cache.ObjectCacheEmptyImpl,Properties={}]
====>
(cache.CacheDistributor 281 ) Specified cache class org.apache.ojb.broker.cache.ObjectCacheEmptyImpl does not implement interface org.apache.ojb.broker.cache.ObjectCacheInternal and will be wrapped by a helper class
(sequence.SequenceManagerHighLowImpl 340 ) OptimisticLockException was thrown, will try again to store sequence. Sequence was org.apache.ojb.broker.util.sequence.HighLowSequence@fbb7cb[tableName=,fieldName=ý,grabSize=1,version=1095786322,maxKey=216176080782949633,currentKey=216176080782949632]
(sequence.SequenceManagerHighLowImpl 340 ) OptimisticLockException was thrown, will try again to store sequence. Sequence was org.apache.ojb.broker.util.sequence.HighLowSequence@bdab91[tableName=,fieldName=ý,grabSize=1,version=1095786322,maxKey=216176080782949633,currentKey=216176080782949632]
(sequence.SequenceManagerHighLowImpl 340 ) OptimisticLockException was thrown, will try again to store sequence. Sequence was org.apache.ojb.broker.util.sequence.HighLowSequence@1c56c60[tableName=,fieldName=ý,grabSize=1,version=1095786322,maxKey=216176080782949633,currentKey=216176080782949632]
(sequence.SequenceManagerHighLowImpl 340 ) OptimisticLockException was thrown, will try again to store sequence. Sequence was org.apache.ojb.broker.util.sequence.HighLowSequence@80d1ff[tableName=,fieldName=ý,grabSize=1,version=1095786322,maxKey=216176080782949633,currentKey=216176080782949632]
(sequence.SequenceManagerHighLowImpl 340 ) OptimisticLockException was thrown, will try again to store sequence. Sequence was org.apache.ojb.broker.util.sequence.HighLowSequence@ec4a87[tableName=,fieldName=ý,grabSize=1,version=1095786322,maxKey=216176080782949633,currentKey=216176080782949632]
(sequence.SequenceManagerHighLowImpl 273 ) Can't lookup new HighLowSequence for field id using sequence name SEQ_PARTNER
.