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    <title>topic Database view page is empty (Oracle) in Alfresco Archive</title>
    <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88785#M60280</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Dear Users,&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;I have a problem in Activiti Explorer. Database view page is empty when activiti engine 5.9 is running on Oracle database 10.&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;I have an mistake:&lt;/SPAN&gt;&lt;BR /&gt;&lt;PRE class="language-none line-numbers"&gt;&lt;CODE&gt;com.vaadin.event.ListenerMethod$MethodException&lt;BR /&gt;Cause: org.activiti.engine.ActivitiException: couldn't get table counts&lt;BR /&gt;at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;BR /&gt;&lt;SPAN&gt;I have discovered that in the Activiti Engine exist a class called TableDataManager.It's method getTableCount() trows this exception at the moment it tryes to run getTablesPresentInDatabase() method which has code:&lt;/SPAN&gt;&lt;BR /&gt;&lt;PRE class="language-none line-numbers"&gt;&lt;CODE&gt;&amp;nbsp; try {&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; log.fine("retrieving activiti tables from jdbc metadata");&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; String tableNameFilter = "ACT_%";&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; if ("postgres".equals(getDbSqlSession().getDbSqlSessionFactory().getDatabaseType())) {&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; tableNameFilter = "act_%";&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; }&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; tables = databaseMetaData.getTables(null, null, tableNameFilter, getDbSqlSession().JDBC_METADATA_TABLE_TYPES);&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;SPAN&gt;Underscore is a symbol of Oracle grammar.I've tryed to run simple SQL on my database:&lt;/SPAN&gt;&lt;BR /&gt;&lt;PRE class="language-none line-numbers"&gt;&lt;CODE&gt;select *&lt;BR /&gt;FROM all_tables&lt;BR /&gt;WHERE&amp;nbsp; TABLE_NAME LIKE&amp;nbsp; 'ACT_%'&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;SPAN&gt;It returns not only tables which starts with&amp;nbsp; ACT_ but also other tables which starts with act.&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;I find that if i modify SQL to&lt;/SPAN&gt;&lt;BR /&gt;&lt;PRE class="language-none line-numbers"&gt;&lt;CODE&gt;select *&lt;BR /&gt;FROM all_tables&lt;BR /&gt;WHERE&amp;nbsp; TABLE_NAME LIKE&amp;nbsp; 'ACT_\%' ESCAPE '\'&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;SPAN&gt;It returns only ACT tables as it should. &lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;You already have special tableNameFilter for "postgres"&lt;/SPAN&gt;&lt;BR /&gt;&lt;PRE class="language-none line-numbers"&gt;&lt;CODE&gt; &lt;BR /&gt;if ("postgres".equals(getDbSqlSession().getDbSqlSessionFactory().getDatabaseType())) {&lt;BR /&gt;tableNameFilter = "act_%";&lt;BR /&gt;}&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;SPAN&gt;Is it possible to introduce special logic for Oracle like &lt;/SPAN&gt;&lt;BR /&gt;&lt;PRE class="language-none line-numbers"&gt;&lt;CODE&gt;if ("oracle".equals(getDbSqlSession().getDbSqlSessionFactory().getDatabaseType())) {&lt;BR /&gt;tableNameFilter = "ACT_\% ESCAPE '\' ";&lt;BR /&gt;} &lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;SPAN&gt;Or do you have any other suggestion how to solve with issue?&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Maybe it would be better to create a JIRA, but anyway i've decided to ask first at forum.&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Thanks,&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Alexander&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Fri, 30 Mar 2012 13:33:26 GMT</pubDate>
    <dc:creator>alexander1</dc:creator>
    <dc:date>2012-03-30T13:33:26Z</dc:date>
    <item>
      <title>Database view page is empty (Oracle)</title>
      <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88785#M60280</link>
      <description>Dear Users,I have a problem in Activiti Explorer. Database view page is empty when activiti engine 5.9 is running on Oracle database 10.I have an mistake:com.vaadin.event.ListenerMethod$MethodExceptionCause: org.activiti.engine.ActivitiException: couldn't get table countsat com.vaadin.event.Listener</description>
      <pubDate>Fri, 30 Mar 2012 13:33:26 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88785#M60280</guid>
      <dc:creator>alexander1</dc:creator>
      <dc:date>2012-03-30T13:33:26Z</dc:date>
    </item>
    <item>
      <title>Re: Database view page is empty (Oracle)</title>
      <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88786#M60281</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;I am running into the same problem when I connect to Oracle and run the demo.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I am evaluating Activiti for my company and not sure this would be a problem in a production environment, but is it something that the development team is willing to address in a patch?&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Thanks.&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 09 May 2012 20:41:04 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88786#M60281</guid>
      <dc:creator>pneudecorb</dc:creator>
      <dc:date>2012-05-09T20:41:04Z</dc:date>
    </item>
    <item>
      <title>Re: Database view page is empty (Oracle)</title>
      <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88787#M60282</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hi,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I had the same problem when I started activity 5.9 demo on my Oracle Database XE 11.2.&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;But in this database I had two different schemas for Activity (users and tables) for version 5.8 and 5.9&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;When the old tables was deleted - it works fine.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Best regards,&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;tomili&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 14 May 2012 14:11:14 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88787#M60282</guid>
      <dc:creator>tomili</dc:creator>
      <dc:date>2012-05-14T14:11:14Z</dc:date>
    </item>
    <item>
      <title>Re: Database view page is empty (Oracle)</title>
      <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88788#M60283</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Same problem here - Please can you fix this? &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;activiti-5.9/setup/files/dependencies/libs/org/activity/activiti-engine-5.9-sources.jar:&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;engine/impl/persistence/entity/TableDataManager.java:&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;2 fixes: &lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp; 1. Escape the '\':&amp;nbsp; …. where table_name like 'ACT\_%' ESCAPE '\';&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp; 2. Look at user_tables instead of all_tables.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Please?&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Tue, 09 Oct 2012 17:58:43 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88788#M60283</guid>
      <dc:creator>cboehnke</dc:creator>
      <dc:date>2012-10-09T17:58:43Z</dc:date>
    </item>
    <item>
      <title>Re: Database view page is empty (Oracle)</title>
      <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88789#M60284</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Can you create a JIRA-issue with the proposed solution elaborated a bit more? That would be great…&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 10 Oct 2012 07:30:54 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88789#M60284</guid>
      <dc:creator>frederikherema1</dc:creator>
      <dc:date>2012-10-10T07:30:54Z</dc:date>
    </item>
    <item>
      <title>Re: Database view page is empty (Oracle)</title>
      <link>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88790#M60285</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;BLOCKQUOTE class="jive-quote"&gt;Can you create a JIRA-issue with the proposed solution elaborated a bit more? That would be great…&lt;/BLOCKQUOTE&gt;&lt;BR /&gt;&lt;SPAN&gt;Good idea. Created &lt;/SPAN&gt;&lt;A href="http://jira.codehaus.org/browse/ACT-1404" rel="nofollow noopener noreferrer"&gt;http://jira.codehaus.org/browse/ACT-1404&lt;/A&gt;&lt;SPAN&gt; , heavily quoting Alexander's excellent findings above.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;- Christian&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 10 Oct 2012 19:53:05 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-archive/database-view-page-is-empty-oracle/m-p/88790#M60285</guid>
      <dc:creator>cboehnke</dc:creator>
      <dc:date>2012-10-10T19:53:05Z</dc:date>
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