ij工具正常运行Java代码时拒绝与Derby Database 10.11.1.1的连接

Question

Presently I have a Derby database... Version 10.11.1.1 Created via a Java app which is functional only when communicated to by the java app running arbitrary queries. Maven dependency as follows:

   <dependency>
        <groupId>org.apache.derby</groupId>
        <artifactId>derby</artifactId>
        <version>10.11.1.1</version>
   </dependency>

When I try to use the ij tool or any other third-party applications:

i.e. connect 'jdbc:derby:/home/username/dev/db-agents/TESTDB';

is unable to do so, complaining about the wrong version is being used, Like as follows:

Caused by: java.sql.SQLException: Database at /home/username/dev/db-agents/TESTDB has an incompatible format with the current version of the software.  The database was created by or upgraded by version 10.11.
    at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
    at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)
    at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
    at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown Source)
    ... 12 more
Caused by: ERROR XSLAN: Database at /home/username/dev/db-agents/TESTDB has an incompatible format with the current version of the software.  The database was created by or upgraded by version 10.11.
    at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
    at org.apache.derby.impl.store.raw.log.LogToFile.readControlFile(Unknown Source)
    at org.apache.derby.impl.store.raw.log.LogToFile.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
    at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
    at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.bootLogFactory(Unknown Source)
    at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.setRawStoreFactory(Unknown Source)
    at org.apache.derby.impl.store.raw.RawStore.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
    at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
    at org.apache.derby.impl.store.access.RAMAccessManager.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
    at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
    at org.apache.derby.impl.db.BasicDatabase.bootStore(Unknown Source)
    at org.apache.derby.impl.db.BasicDatabase.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
    at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
    at org.apache.derby.impl.services.monitor.BaseMonitor.startProviderService(Unknown Source)

I can't understand why I can connect from the Java app and nothing else? Is there something in particular I'm doing wrong?

Answer 1

Your ij session is using an older version of Derby.

This is controlled by the CLASSPATH that is set when you run ij.

Look closely at the script or command you are using to start ij, to see which version of Derby it is running.

Then adjust the CLASSPATH that you use when you run ij so that it uses Derby 10.11, which is the version your Java app is using.