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Changes for page JDBC and Entity Modeler

Last modified by Theodore Petrosky on 2017/04/02 18:37
From version 19.1
edited by Lachlan Scott
on 2007/07/10 19:57
Change comment: There is no comment for this version
To version 28.1
edited by Theodore Petrosky
on 2023/11/13 11:58
Change comment: Renamed from xwiki:documentation.JDBC and Entity Modeler

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1 -**Problem:** You encounter the 'JDBC connection failed for driver ...' error message when trying to generate SQL in Entity Modeler.
1 +==== Problem: You encounter the 'JDBC connection failed for driver ...' error message when trying to generate SQL in Entity Modeler. ====
2 2  
3 -**Discussion:** either the JDBC driver genuinely cannot be found, or more likely perhaps, your JDBC settings in Entity Modeler are incorrect.
3 +[[image:attach:JDBC connection failed.jpg]]
4 4  
5 -**Checking the JDBC driver is in your CLASSPATH:**
5 +==== **Discussion** ====
6 6  
7 -On the Mac, if JDBC drivers are added to /Library/Java/Extensions they should be picked up automatically by Eclipse. Check your classpath settings in Eclipse as follows:
7 +Either the JDBC driver genuinely cannot be found, or more likely perhaps, your JDBC settings in Entity Modeler are incorrect.
8 8  
9 -Right-click the project in Package Explorer
10 -Select Java Build Path from the left hand list, and Libraries from the tabs in the main field
11 -Open the JRE System Library list, and you should see your available JDBC driver see screenshot
12 -If you cannot see your driver listed, you must add it. instructions required
9 +On Mac OS X, the /Library/Java/Extensions directory is provided for extensions to the core Java API, and is thus the appropriate place for JDBC drivers.
13 13  
14 -**Checking the JDBC settings in Entity Modeler:**
11 +Put your JDBC drivers into the /Library/Java/Extensions then, and they should be picked up automatically by Eclipse.
15 15  
16 -Check that the settings for your JDBC driver are correct. Details should be provided by the suppliers. MySQL settings are shown in the screenshot see screenshot. Note that drivers have peculiar use of upper and lower case and that these must be correct for the driver to function.
13 +==== **Solution - check that your JDBC driver is in your CLASSPATH:** ====
17 17  
15 +Check your classpath settings in Eclipse as follows:
16 +[[image:attach:Checking_CLASSPATH.jpg]]
17 +
18 +* Right-click the project in Package Explorer
19 +* Select Java Build Path from the left hand list, and Libraries from the tabs in the main field
20 +* Open the JRE System Library list, and you should see your available JDBC driver (see screenshot)
21 +* If you cannot see your driver listed, you must add it. [WOL:instructions required]
22 +
23 +==== **Solution - check JDBC settings in Entity Modeler** ====
24 +
25 +Check that the settings for your JDBC driver are correct; these details are provided by the suppliers. MySQL settings are shown in the screenshot (see screenshot). Note that drivers have peculiar use of capitalization, and that //this must be correct// for the driver to function!
26 +
27 +[[image:attach:JDBC_correct_settings_mysql.jpg]]
28 +
29 +
30 +==== List of JDBC driver settings ====
31 +
32 +**Derby JDBC driver settings:**
33 + Embedded Derby, how is it done?
34 + How do you set property derby.system.home so Entity Modeler can be used?
35 +
18 18  **MySQL JDBC driver settings:**
19 19  
20 -URL: jdbc:mysql:~/~/<hostname>/<database//name>. eg. jdbc:mysql:~/~/localhost/authors
21 -Driver: com.mysql.jdbc.Driver//
38 +URL: jdbc:mysql:~/~/<hostname>/<database_name>. eg. jdbc:mysql:~/~/localhost/authors
39 + Driver: com.mysql.jdbc.Driver
22 22  
23 23  **OpenBase JDBC driver settings:**
24 24  
25 -URL: jdbc:openbase:~/~/<hostname>/<database//name>. eg. jdbc:openbase:~/~/localhost/authors
26 -Driver: com.openbase.jdbc.ObDriver
27 -//
43 +URL: jdbc:openbase:~/~/<hostname>/<database_name>. eg. jdbc:openbase:~/~/localhost/authors
44 + Driver: com.openbase.jdbc.ObDriver
45 +
46 +**FrontBase JDBC driver settings:**
47 +
48 +URL: jdbc:FrontBase:~/~/<hostname>/<database_name>. eg. jdbc:FrontBase:~/~/localhost/authors
49 + Driver:
50 +
51 +**Postgresql JDBC driver settings:**
52 + URL: jdbc:postgresql:~/~/<hostname>/<databasename> eg. jdbc:postgresql:~/~/localhost/authors
53 + Driver: org.postgresql.Driver
54 + Plugin: Postgresql
55 +
56 +**H2 JDBC driver settings:**
57 + URL: jdbc:h2:~~/<databasename>\\
58 +
59 +**Oracle JDBC driver settings:**
60 +URL: jdbc:oracle:thin:@<hostname>:1521/SID using Java jar ojdbc6.jar downloaded from Oracle's website (account needed, but free)
61 +
62 +
63 +
64 +
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