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Posted to issues@commons.apache.org by "Bill Mitchell (JIRA)" <ji...@apache.org> on 2018/08/30 15:52:00 UTC

[jira] [Created] (DBCP-521) dbcp 2.5.0 doesn't work with JDBC 3.0 drivers, e.g., jtds

Bill Mitchell created DBCP-521:
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             Summary: dbcp 2.5.0 doesn't work with JDBC 3.0 drivers, e.g., jtds
                 Key: DBCP-521
                 URL: https://issues.apache.org/jira/browse/DBCP-521
             Project: Commons DBCP
          Issue Type: Bug
    Affects Versions: 2.5.0
            Reporter: Bill Mitchell


Thanks to DBCP-508, to add the schema to the keys for the prepared statement cache, the Connection.getSchema() method is called.  On the dbcp side, this call is issued in a try-catch block that ignores a returned SQLException.  Unfortunately, at least one JDBC 3.0 driver, jdts 1.3.1, throws an AbstractMethodError in its getSchema method, as it doesn't support this.  (The 2.4.0 version of dbcp works fine with jtds.)

At least two fixes are possible.  One could ignore any Throwable from getSchema call.  Or one could determine the major/minor JDBC version for the connection and issue the method call only on drivers that claim support for 4.1.  



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