OracleHomeKey: OracleHomeDir: 在PLSQL Developer选择Tools > Preferences > options > 下的如图所示:"Oracle Home" and "OCI Library" Oracle10g装在d:\oracle\ Oracle Home为d:\oracle\product\10.1.0 OCI Library为d:\oracle\product\10.1.0\Db_1\BIN\oci.dll 配置完以后重新启动PLSQL Developer,登录成功...