About Data Set



Thrown by the persistence provider when EntityTransaction.commit() fails.(Exception of JPA)



Thrown by the persistence provider when Query.getSingleResult() or TypedQuery.getSingleResult()is executed on a query and there is no result to return.(Exception of JPA)



Thrown by the persistence provider when Query.getSingleResult() or TypedQuery.getSingleResult() is executed on a query and there is more than one result from the query.(Exception of JPA)



Thrown by the persistence provider when a query times out and only the statement is rolled back.(Exception of JPA)



Thrown by the persistence provider when a transaction is required but is not active.(Exception of JPA)



(Exception of java.langException RuntimeException)


Replication issue, Replayer failing due to NullPointerException.

I'm getting replication errors and upon trying to play the replayer I get a NullPointerException which i'm also seeing in the slave logs when it's trying to replicate... ... on the slave; "/usr/test/backend/db/" is the data path and where all the DB's are on the master. I cannot get an ... all DB's, this also seems like a bug. I have recording set to write only.   ...



This class can be used by a JDO-aware application to call the JDO behavior of PersistenceCapable instances without declaring them to be PersistenceCapable.(Class of JDO)



  During the evaluation of ObjectDB (We're currently developing with EclipseLink/mysql) I noticed was the following: ... Is there a setting, that I have/need to set; to prevent the object from being saved? Or did I do something wrong? ... See JavaDoc Reference Page... ) because data in ObjectDB is not mapped to SQL, tables and columns. But you can ...


Is 2 level cache in use?

Hi, Is there any way to check, if 2 level cache is in use? Right now I've done two things: 1. objectdb.conf with cache size is placed in WEB-INF directory of my web application. 2. persistence.xml was modified with: ... I'm calling the same url in benchmark, so most of the data should be in cache. ODB and Tomcat are on different servers. ... the primary data. Currently this hint must be set at the query level (as demonstrated above) - but it should be supported in ...