Database

How to create XMLIndex? When its worth to use it?

How to create XML index? Very general way with all default applied as follows: create index index_name on table_name (xmltype_column) indextype is xdb.xmlindex; Check the name of PATH table select path_table_name from user_xml_indexes  where table_name = ‘table_name’ and index_name = ‘index_name’;  Check what secondary indexes are used select c.index_name, c.column_name, c.column_position, e.column_expression   from user_ind_columns c left outer join user_ind_expressions…

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Database, Logging, SQL and PL/SQL

How to enable tracing in Oracle DB? How to read trace files?

There are many ways to enable tracing in Oracle DB, some are legacy and deprecated. One of latest and recommended method for 11gR2 – use of DBMS_MONITOR (find out more about it in Oracle reference) package. To enable whole instance tracing: execute dbms_monitor.database_trace_enable(waits => true, binds => true,  instance_name => ‘instance_name’); To disable whole instance tracing:  execute dbms_monitor.database_trace_disable(instance_name => ‘instance_name’);…

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ADF

ADF “Select many shuttle” (af:selectManyShuttle) component does not show all items in the leading list

   ADF “Select many shuttle” does not populate all items available in binded iterator. I don’t know whether this is a bug or some other reason, but af:selectManyShuttle in the leading list populates just no more items then defined in the “RangeSize” property of iterator.   To my mind it supposed to fetch all items in iterator in bunches of %RangeSize%…

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ADF

Problem with navigation using task flow actions – action is not executed after first button click

I experienced such strange ADF behavior regarding navigation using task-flow actions. Navigation doesn’t work after single button press. After second press – works fine. Preconditions: Application “MyApp” with two pages – main.jspx and popup.jspx (You can download sample app) popup.jspx belongs to bounded task-flow main.jspx belongs to unbounded task-flow Action “open” is defined in unbouded task-flow (see picture below) CommandButton…

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ADF

How to implement contextual events between parent page and region?

   Contextual events are necessary when need to communicate between separate regions or between parent page and region in ADF application. Here I’ll describe one approach to implement this. It is a little improvement of classic approach, because of event handling java interface is created and event consumer is implementing it. It is convenient, when need to separate data control…

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ADF, ADF Desktop Integration (ADFdi), ADF Exceptions

ADF Desktop Integration Excel worksheet exception on upload operation: ArgumentException: invalid area string: N5:Q5,S5

Full exception stack: ArgumentException: invalid area string: N5:Q5,S5 Source: adfdi-excel-om-api Stack: at oracle.adf.client.windows.excel.om.api.ExcelRangeAreas.ParseRangeAddress() at oracle.adf.client.windows.excel.om.api.cache.ExcelRangeCache.get_RangeAreas() at oracle.adf.client.windows.excel.om.api.ExcelRangeReader..ctor(ExcelRange range, Int32 maxRows) at oracle.adf.client.windows.excel.runtime.uicomponent.table.DEGUploadHelper.InitDataRangeIterator() at oracle.adf.client.windows.excel.runtime.uicomponent.table.TableOperationHelper.ProcessRows(Boolean abortOnFail) at oracle.adf.client.windows.excel.runtime.uicomponent.table.TableOperationHelper.Run(RTColumn rtColumnFlaggedOrChanged, Int32 cRowsFlaggedOrChanged, Boolean abortOnFail) at oracle.adf.client.windows.excel.runtime.uicomponent.table.DEGUploadHelper.Upload(Boolean haveOptions, Boolean abortOnFail, Boolean downloadAfterUpload) at oracle.adf.client.windows.excel.runtime.uicomponent.RTDataEntryGrid.Invoke(RTComponentAction rtAction) at oracle.adf.client.windows.excel.runtime.uicomponent.RTActionCollection.DoInvoke(RTColumnCollection parent) This exception is thrown when data upload to server is requested. Range N5:Q5,S5 specifies cells…

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ADF Desktop Integration (ADFdi)

ADF dekstop integration (ADFdi) plugin with macro enabled file doesn’t work when opened from MS Internet Explorer. File is opened but nothing is loaded. Why?

Actually this is not an issue or bug, it is not even directly related to ADFdi. Everything work as supposed to 🙂 ADFdi plugin can’t function properly, because Excel opens file in a protected view. This happens because AES (Attachment Execution Services) marks file as downloaded from internet (only MS IE and Outlook can do this). Before showing file contents…

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ADF, JDeveloper, SQL and PL/SQL, Weblogic

How to change logging level of standalone or integrated WebLogic in JDeveloper? For example how to capture SQL executed?

In Integrated WebLogic (JDeveloper) this can be done with just few clicks: Open “IntegratedWeblogicServer – Log” window. On the right-hand top corner click “Actions” and choose “Configure Oracle Diagnostic Logging” For getting SQL statements in the output, in the opened logging.xml choose “oracle.jbo” logger with desired logging level. Level “Finest” will generate maximum output. SQL staements shoud definitely be there.…

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ADF, ADF Desktop Integration (ADFdi), ADF Exceptions

ADFDI-00502: The client was unable to establish an unauthenticated session with the web application. What can be the reason?

I have experienced such error. The reason was, that web application didn’t know, that servlet “adfdiRemoteServlet”, responsible for Excel workbook connectivity, should be secured. Problem happens only when ADF security is set to “ADF Authentication and Authorization”. This means, that ADF takes care not just for login, but for access to various resources (in our case it is adfdiRemoteServlet) as…

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