Introduction

Delft-FEWS has currently three flavours of local datastores all of which can be inspected with DBVisualizer.

1. MS-Access (32-bit, Windows only)
2. Firebird (32-bit)
3. Derby

For inspecting a Delft-FEWS local datastore it is recommended to install DBVisualizer and the appropriate Jdbc driver that matches the local datastore format.

Installation of DBVisualizer

Download the latest 32-bit DBVisualizer from the download section of http://www.dbvis.com/. For Windows it is recommended to download the DBVisualizer 32-bit with embedded JRE. This way it is guaranteed that the firebird driver is always started with 32-bit java. Install DBVisualizer in a directory that preferrably does not contain any spaces. For Windows and Linux it is required to use a 32-bit JRE.

After installation copy connector.jar from the FEWS bin dir (or see attachments of this page) to $DBVIS_DIR/lib.

Also the following settings in the Windows Environment variables are required.

DBVIS_DIR=$DBVIS_DIR
PATH=.;%DBVIS_DIR%;%PATH%

For linux the following settings are recommended.

#!/bin/bash

# Point $DBVIS_DIR to the directory where DBVisualizer has been installed
DBVIS_DIR=/opt/DBVisualizer


# Start the application
$DBVIS_DIR/dbvis $*

Download libraries

First download the dbvisualizer_jdbc_addons.zip zip file containing all the required additions to the $DBVIS_DIR.

Installation of the MS Access driver

Select the Jdbc/ODBC bridge and specify the windows jdbc:odbc:DRIVER={Microsoft Access Driver (*.mdb)};DBQ=d:\datastores\region_home\localDataStore\local.mdb

where d:\datastores\region_home\localDataStore\local.mdb is where the MSAccess file is located.

Installation of the Derby Jdbc Driver

If needed copy the latest derby driver from the Delft-FEWS bin dir, e.g. derby-10.8.1.2.jar to the $DBVIS_DIR/jdbc/derby directory.

Specify the database url as where the derby local datastore is located, e.g. jdbc:derby:D:/datastores/region_home/localDataStore/local.derby

Installation of the Firebird Jdbc Driver

For using DBVisualizer with Firebird under Windows specify following environment variable.

LD_LIBRARY_PATH=$DBVIS_DIR/jdbc/firebird

For using DBVisualizer with Firebird under Linux include  the following in the shell profile.

# Setting the variables
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$DBVIS_DIR/jdbc/firebird

Copy java libraries (Windows and Linux)

• create the directory $DBVIS_DIR/jdbc/firebird
• copy jaybird-2.1.6p.jar from the FEWS bin dir to $DBVIS_DIR/jdbc/firebird
  
  

and the URL format jdbc:firebirdsql:embedded:

Copy native libraries (Windows)

Copy the following files to the $DBVIS_DIR directory:
fbembed.dll
icudt30.dll
icuin30.dll
icuuc30.dll
ib_util.dll
jaybird21.dll

NB fbembed.dll depends on MSVCR80.dll while jaybird21.dll depends on MSVCR71.dll. On some computers you must need to include those also when not available. See the Fews binary or the attachments)

Copy native libraries and additional files (Linux)

Copy the following files to the $DBVIS_DIR/jdbc/firebird directory:
firebird.conf
firebird.msg
libfbdrop.so
libfbembed.so
libib_util.so
libicudata.so.30
libicui18n.so.30
libicuuc.so.30
libjaybird21.so
security2.fdb

Firebird connection properties

Specify the database url as where the Firebird local datastore is located, e.g. jdbc:firebirdsql:embedded:d:\datastores\region_home\localDataStore\local.fdb

jdbc:firebirdsql:embedded:d:\datastores\region_home\localDataStore\local.fdb
username: sysdba
password: masterkey

Tips and tricks

• The wildcard for texts when using the LIKE statement is % (e.g. SELECT * FROM TimeSeries WHERE moduleInstanceId LIKE '%Import%')
• When looking for a date in an SQL string - use CAST('yyyy-MM-dd HH:mm:ss' as TIMESTAMP)
  (this is equivalent to the ORACLE to_Date command)