Tables not shown in connections tree for DB2 databases

Question

Hi!
I often use SQL Developer to connect to our DB2 databases. However, when I expand the desired schema in a DB2 database, the Tables node is empty, although it should not be. There are tables in that schema and I can select data from them, so security is not an issue:
For example:
select tabschema, tabname from syscat.tables where tabschema not like 'SYS%' order by 1,2;
returns many schema names and table names is those schemas. Let's pick one, i.e table name METER_TYPE in schema METER ( there are 4 tables in schema METER)
select count(*) from meter.meter_type
returns: 38
However, the Tables node shows no tables. Tese tables are not Aliases (DB2 slang for synonyms) or views, however, those 2 nodes are also empty when they should not be - we have schemas with aliases and views, which are also NOT shown. The Index node is populated most frequently, but not completely (there are indexes missing).
Here are my details (don't be fooled by java 1.7, the behaviour is the same with 1.6):
DB2 jdbc driver version: 3.57.82
About
Oracle SQL Developer 3.0.04
Version 3.0.04
Build MAIN-04.34
Copyright © 2005, 2011 Oracle. All Rights Reserved.
IDE Version: 11.1.1.4.37.59.31
Product ID: oracle.sqldeveloper
Product Version: 11.1.2.04.34
Version
Component     Version
=========     =======
Java(TM) Platform     1.7.0
Oracle IDE     3.0.04.34
Versioning Support     3.0.04.34
Properties
Name     Value
====     =====
awt.toolkit     sun.awt.X11.XToolkit
class.load.environment     oracle.ide.boot.IdeClassLoadEnvironment
class.load.log.level     CONFIG
class.transfer     delegate
file.encoding     UTF-8
file.encoding.pkg     sun.io
file.separator     /
http.nonProxyHosts     localhost|localhost.localdomain|127.0.0.1|::1|localhost|alex.localdomain
ice.browser.forcegc     false
ice.pilots.html4.ignoreNonGenericFonts     true
ice.pilots.html4.tileOptThreshold     0
ide.AssertTracingDisabled     true
ide.bootstrap.start     5367470843749639
ide.build     MAIN-04.34
ide.conf     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/sqldeveloper/bin/sqldeveloper.conf
ide.config_pathname     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/sqldeveloper/bin/sqldeveloper.conf
ide.debugbuild     false
ide.devbuild     false
ide.extension.search.path     sqldeveloper/extensions:jdev/extensions:ide/extensions
ide.firstrun     true
ide.java.minversion     1.6.0_04
ide.main.class     oracle.ide.boot.IdeLauncher
ide.patches.dir     ide/lib/patches
ide.pref.dir     /home/alex/.sqldeveloper
ide.product     oracle.sqldeveloper
ide.splash.screen     splash.gif
ide.startingcwd     "/home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/sqldeveloper/bin"
ide.user.dir     /home/alex/.sqldeveloper
ide.user.dir.var     IDE_USER_DIR
ide.vcs.noapplications     true
ide.work.dir     /home/alex/sqldeveloper
ilog.propagatesPropertyEditors     false
java.awt.graphicsenv     sun.awt.X11GraphicsEnvironment
java.awt.printerjob     sun.print.PSPrinterJob
java.class.path     ../../ide/lib/ide-boot.jar
java.class.version     51.0
java.endorsed.dirs     /home/alex/prg/jdk1.7.0/jre/lib/endorsed
java.ext.dirs     /home/alex/prg/jdk1.7.0/jre/lib/ext:/usr/java/packages/lib/ext
java.home     /home/alex/prg/jdk1.7.0/jre
java.io.tmpdir     /tmp
java.library.path     /home/alex/prg/oracle/instantclient_11_2::/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
java.naming.factory.initial     oracle.javatools.jndi.LocalInitialContextFactory
java.protocol.handler.pkgs     oracle.jdevimpl.handler
java.runtime.name     Java(TM) SE Runtime Environment
java.runtime.version     1.7.0-b147
java.specification.name     Java Platform API Specification
java.specification.vendor     Oracle Corporation
java.specification.version     1.7
java.util.logging.config.file     logging.conf
java.vendor     Oracle Corporation
java.vendor.url     http://java.oracle.com/
java.vendor.url.bug     http://bugreport.sun.com/bugreport/
java.version     1.7.0
java.vm.info     mixed mode
java.vm.name     Java HotSpot(TM) 64-Bit Server VM
java.vm.specification.name     Java Virtual Machine Specification
java.vm.specification.vendor     Oracle Corporation
java.vm.specification.version     1.7
java.vm.vendor     Oracle Corporation
java.vm.version     21.0-b17
jdbc.library     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/jdbc/lib/ojdbc6.jar
line.separator     \n
log.file.name     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/sqldeveloper/extensions/oracle.datamodeler/log/datamodeler.log
oracle.home     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper
oracle.ide.util.AddinPolicyUtils.OVERRIDE_FLAG     true
oracle.jdbc.mapDateToTimestamp     false
oracle.net.tns_admin     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/network/admin
oracle.translated.locales     de,es,fr,it,ja,ko,pt_BR,zh_CN,zh_TW
oracle.xdkjava.compatibility.version     9.0.4
orai18n.library     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/jlib/orai18n.jar
os.arch     amd64
os.name     Linux
os.version     2.6.30.10-105.2.23.fc11.x86_64
path.separator     :
reserved_filenames     con,aux,prn,lpt1,lpt2,lpt3,lpt4,lpt5,lpt6,lpt7,lpt8,lpt9,com1,com2,com3,com4,com5,com6,com7,com8,com9,conin$,conout,conout$
sqldev.debug     false
sun.arch.data.model     64
sun.awt.enableExtraMouseButtons     true
sun.boot.class.path     /home/alex/prg/jdk1.7.0/jre/lib/resources.jar:/home/alex/prg/jdk1.7.0/jre/lib/rt.jar:/home/alex/prg/jdk1.7.0/jre/lib/sunrsasign.jar:/home/alex/prg/jdk1.7.0/jre/lib/jsse.jar:/home/alex/prg/jdk1.7.0/jre/lib/jce.jar:/home/alex/prg/jdk1.7.0/jre/lib/charsets.jar:/home/alex/prg/jdk1.7.0/jre/classes
sun.boot.library.path     /home/alex/prg/jdk1.7.0/jre/lib/amd64
sun.cpu.endian     little
sun.cpu.isalist     
sun.desktop     gnome
sun.io.unicode.encoding     UnicodeLittle
sun.java.command     oracle.ide.boot.Launcher
sun.java.launcher     SUN_STANDARD
sun.java2d.ddoffscreen     false
sun.java2d.pmoffscreen     false
sun.jnu.encoding     UTF-8
sun.management.compiler     HotSpot 64-Bit Tiered Compilers
sun.os.patch.level     unknown
svnkit.sax.useDefault     true
user.country     US
user.dir     /home/alex/prg/oracle/sqldeveloper300434/sqldeveloper/sqldeveloper/bin
user.home     /home/alex
user.language     en
user.name     alex
user.timezone     CET
windows.shell.font.languages     
Extensions
Name     Identifier     Version     Status
====     ==========     =======     ======
Check For Updates     oracle.ide.webupdate     11.1.1.4.37.59.31     Loaded
Code Editor     oracle.ide.ceditor     11.1.1.4.37.59.31     Loaded
Component Palette     oracle.ide.palette1     11.1.1.4.37.59.31     Loaded
Data Miner     oracle.dmt.dataminer     11.2.0.1.10.109     Loaded
Database Connection Support     oracle.jdeveloper.db.connection     11.1.1.4.37.59.31     Loaded
Database Object Explorers     oracle.ide.db.explorer     11.1.1.4.37.59.31     Loaded
Database UI     oracle.ide.db     11.1.1.4.37.59.31     Loaded
Diagram Framework     oracle.diagram     11.1.1.4.37.59.31     Loaded
Diagram Javadoc Extension     oracle.diagram.javadoc     11.1.1.4.37.59.31     Loaded
Diagram Thumbnail     oracle.diagram.thumbnail     11.1.1.4.37.59.31     Loaded
Diff/Merge     oracle.ide.diffmerge     11.1.1.4.37.59.31     Loaded
Extended IDE Platform     oracle.javacore     11.1.1.4.37.59.31     Loaded
External Tools     oracle.ide.externaltools     11.1.1.4.37.59.31     Loaded
File Support     oracle.ide.files     11.1.1.4.37.59.31     Loaded
Help System     oracle.ide.help     11.1.1.4.37.59.31     Loaded
History Support     oracle.jdeveloper.history     11.1.1.4.37.59.31     Loaded
Import/Export Support     oracle.ide.importexport     11.1.1.4.37.59.31     Loaded
Index Migrator support     oracle.ideimpl.indexing-migrator     11.1.1.4.37.59.31     Loaded
JDeveloper Runner     oracle.jdeveloper.runner     11.1.1.4.37.59.31     Loaded
JViews Registration Addin     oracle.diagram.registration     11.1.1.4.37.59.31     Loaded
Log Window     oracle.ide.log     11.1.1.4.37.59.31     Loaded
Mac OS X Adapter     oracle.ideimpl.apple     11.1.1.4.37.59.31     Loaded
Navigator     oracle.ide.navigator     11.1.1.4.37.59.31     Loaded
Object Gallery     oracle.ide.gallery     11.1.1.4.37.59.31     Loaded
Oracle IDE     oracle.ide     11.1.1.4.37.59.31     Loaded
Oracle SQL Developer     oracle.sqldeveloper     11.1.2.04.34     Loaded
Oracle SQL Developer - 3rd Party Database Browsers     oracle.sqldeveloper.thirdparty.browsers     11.1.1.04.34     Loaded
Oracle SQL Developer - DBA Navigator     oracle.sqldeveloper.dbanavigator     11.1.1.04.34     Loaded
Oracle SQL Developer - Extras     oracle.sqldeveloper.extras     1.1.1.04.34     Loaded
Oracle SQL Developer - File Navigator     oracle.sqldeveloper.filenavigator     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Antlr3 Translator     oracle.sqldeveloper.migration.translation.core_antlr3     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Application Migration     oracle.sqldeveloper.migration.application     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Core     oracle.sqldeveloper.migration     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations DB2     oracle.sqldeveloper.migration.db2     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations DB2 Translator     oracle.sqldeveloper.migration.translation.db2     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Microsoft Access     oracle.sqldeveloper.migration.msaccess     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Microsoft SQL Server     oracle.sqldeveloper.migration.sqlserver     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations MySQL     oracle.sqldeveloper.migration.mysql     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Sybase Adaptive Server     oracle.sqldeveloper.migration.sybase     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations T-SQL Translator     oracle.sqldeveloper.migration.translation.core     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Teradata     oracle.sqldeveloper.migration.teradata     11.1.1.04.34     Loaded
Oracle SQL Developer - Migrations Translation UI     oracle.sqldeveloper.migration.translation.gui     11.1.1.04.34     Loaded
Oracle SQL Developer - Object Viewer     oracle.sqldeveloper.oviewer     11.1.1.04.34     Loaded
Oracle SQL Developer - Real Time SQL Monitoring     oracle.sqldeveloper.sqlmonitor     11.1.1.04.34     Loaded
Oracle SQL Developer - Reports     oracle.sqldeveloper.report     11.1.1.04.34     Loaded
Oracle SQL Developer - Scheduler     oracle.sqldeveloper.scheduler     11.1.1.04.34     Loaded
Oracle SQL Developer - Schema Browser     oracle.sqldeveloper.schemabrowser     11.1.1.04.34     Loaded
Oracle SQL Developer - SearchBar     oracle.sqldeveloper.searchbar     11.1.1.04.34     Loaded
Oracle SQL Developer - Snippet     oracle.sqldeveloper.snippet     11.1.1.04.34     Loaded
Oracle SQL Developer - Spatial     oracle.sqldeveloper.spatial     11.1.1.04.34     Loaded
Oracle SQL Developer - TimesTen     oracle.sqldeveloper.timesten     2.0.0.04.34     Loaded
Oracle SQL Developer - Tuning     oracle.sqldeveloper.tuning     11.1.1.04.34     Loaded
Oracle SQL Developer - Unit Test     oracle.sqldeveloper.unit_test     11.1.1.04.34     Loaded
Oracle SQL Developer - User Extensions Support     oracle.sqldeveloper.userextensions     11.1.1.04.34     Loaded
Oracle SQL Developer - Worksheet v2     oracle.sqldeveloper.worksheet     11.1.1.04.34     Loaded
Oracle SQL Developer - XML Schema     oracle.sqldeveloper.xmlschema     11.1.1.04.34     Loaded
Oracle SQL Developer Data Modeler     oracle.datamodeler     3.0.0.665.2     Loaded
Oracle SQL Developer Data Modeler - Reports     oracle.sqldeveloper.datamodeler_reports     11.1.1.04.34     Loaded
PROBE Debugger     oracle.jdeveloper.db.debug.probe     11.1.1.4.37.59.31     Loaded
Peek     oracle.ide.peek     11.1.1.4.37.59.31     Loaded
Persistent Storage     oracle.ide.persistence     11.1.1.4.37.59.31     Loaded
Property Inspector     oracle.ide.inspector     11.1.1.4.37.59.31     Loaded
QuickDiff     oracle.ide.quickdiff     11.1.1.4.37.59.31     Loaded
Replace With     oracle.ide.replace     11.1.1.4.37.59.31     Loaded
Runner     oracle.ide.runner     11.1.1.4.37.59.31     Loaded
SQL Developer Patch     oracle.sqldeveloper.patch     11.1.2.04.39     Loaded
VHV     oracle.ide.vhv     11.1.1.4.37.59.31     Loaded
Versioning Support     oracle.jdeveloper.vcs     11.1.1.4.37.59.31     Loaded
Versioning Support for Subversion     oracle.jdeveloper.subversion     11.1.1.4.37.59.31     Loaded
Virtual File System     oracle.ide.vfs     11.1.1.4.37.59.31     Loaded
Web Browser and Proxy     oracle.ide.webbrowser     11.1.1.4.37.59.31     Loaded
XML Editing Framework IDE Extension     oracle.ide.xmlef     11.1.1.4.37.59.31     Loaded
audit     oracle.ide.audit     11.1.1.4.37.59.31     Loaded
classpath: protocol handler extension     oracle.jdeveloper.classpath     11.1.1.0.0     Loaded
jdukshare     oracle.bm.jdukshare     11.1.1.4.37.59.31     Loaded
mof-xmi     oracle.mof.xmi     11.1.1.4.37.59.31     Loaded
oracle.ide.dependency     oracle.ide.dependency     11.1.1.4.37.59.31     Loaded
oracle.ide.indexing     oracle.ide.indexing     11.1.1.4.37.59.31     Loaded
palette2     oracle.ide.palette2     11.1.1.4.37.59.31     Loaded
status     oracle.ide.status     11.1.1.4.37.59.31     Loaded

Answer 1

It doesn't sound like this is the answer in your case, but here is a problem I had with tree icons in 6i which took me a while to figure out.
For some unknown and probably pointless reason, forms converts the tree query to uppercase before executing it. This can cause problems if the sql contains any hardcoded strings. In my case I was doing something like
decode(status,1,'red',2,'green')||icon_name
this resulted in REDicon when my icon was actually redicon.gif