oracle - Issue with parameterizing ROWNUM using OracleCommand (C#) using managed ODP.NET -

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i trying parameterise rownum when trying query oracle database using latest odp.net managed driver.

sql query "...where rownum <= :rowstolock"

when try add rownum parameter shown below:

dbcommand.parameters.add("rowstolock", oracle.manageddataaccess.client.oracledbtype.int64, 25 , parameterdirection.input);

and try execute query

dbcommand.executenonquery()

i exception:

"additional information: ora-01008: not variables bound"

row num number can see in previous stack overflow post: what oracletype of rownum

however cannot find oracle.manageddataaccess.client.oracledbtype.number. tried other numeric types availabe in oracle.manageddataaccess.client.oracledbtype enum.

i find hard think limitation of managed driver (number type unavailable).

code snippet:

        string sql = "...where  rownum & lt;= :rowstolock";         string connectionstring = "my connection string";         oracle.manageddataaccess.client.oracleconnection connectiont = new oracle.manageddataaccess.client.oracleconnection(connectionstring);          oracle.manageddataaccess.client.oraclecommand dbcommand = new oracle.manageddataaccess.client.oraclecommand(sql, connectiont);         dbcommand.parameters.add("rowstolock", oracle.manageddataaccess.client.oracledbtype.decimal, 25, parameterdirection.input);         connectiont.open();         int rowsaffected = dbcommand.executenonquery();

complete exception:

ora-01008: not variables bound oracle data provider .net, managed driver        @ oracleinternal.serviceobjects.oraclecommandimpl.verifyexecution(oracleconnectionimpl connectionimpl, int32& cursorid, boolean bthrowarraybindrelatederrors, oracleexception& exceptionforarraybinddml, boolean& hasmorerowsindb, boolean bfirstiterationdone)        @  oracleinternal.serviceobjects.oraclecommandimpl.verifyexecution(oracleconnectionimpl connectionimpl, int32& cursorid, boolean bthrowarraybindrelatederrors, oracleexception& exceptionforarraybinddml, boolean bfirstiterationdone)        @ oracleinternal.serviceobjects.oraclecommandimpl.executenonquery(string commandtext, oracleparametercollection paramcoll, commandtype commandtype, oracleconnectionimpl connectionimpl, int32 longfetchsize, int64 clientinitiallobfs, oracledependencyimpl orcldependencyimpl, int64[]& scnfromexecution, oracleparametercollection& bindbypositionparamcoll, boolean& bbindparampresent, oracleexception& exceptionforarraybinddml, boolean isfromef)        @ oracle.manageddataaccess.client.oraclecommand.executenonquery()        @ quicktest1.program.main(string[] args) in c:\users\george\documents\visual studio 2015\projects\program.cs:line 44        @ system.appdomain._nexecuteassembly(runtimeassembly assembly, string[] args)        @ system.appdomain.executeassembly(string assemblyfile, evidence assemblysecurity, string[] args)        @ microsoft.visualstudio.hostingprocess.hostproc.runusersassembly()        @ system.threading.threadhelper.threadstart_context(object state)        @ system.threading.executioncontext.runinternal(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)        @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)        @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state)        @ system.threading.threadhelper.threadstart()

any genuinely appreciated.

the snippet cannot compiled. use dbcommand reference , line after declare it. add parameter , instantiate new instance of oraclecommand. command doesn't have parameter. , expect fail on ora-01745: invalid host/bind variable name because rownum reserved word.


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