Hello ivanceras,
YOUR PROPERTY "datanucleus.ConnectionURL" ----------------------------------------- I do not know what your dev environment is. I use NetBeans; this has a connection set up to use my local MySQL database. I noticed an extra "//" between the "jdbc:" and "mysql" parts of your connection URL. But you might need this for your environment. You might want to verify your value for this property. YOUR PROPERTY "datanucleus.storeManagerType" -------------------------------------------- I personally do not use this property. As you will probably know, the relevant DataNucleus documentation describes this property as: 'Type of the StoreManager to use for this PMF/EMF. This has typical values of "rdbms", "db4o". If it isn't specified then it falls back to trying to find the StoreManager from the connection URL. The associated DataNucleus plugin has to be in the CLASSPATH when selecting this. When using data sources (as usually done in a JavaEE container), DataNucleus cannot find out the correct type automatically and this option must be set.' I assume that your set-up requires this property (otherwise I would suggest omitting it as I do). All I can suggest here is to verify that you have the relevant DataNucleus plug-in and that it can be found from your class path. I do not speak from experience about this property since I have never used it. Don't make the mistake I have made: ensure that you use the same DataNucleus plug-in version number as is used by the version of GAE that you use! Cheers, Ian
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