JCo RFC_READ_TABLE 数据缓冲区超出

Question

i'm trying to get data from Table VBRK via Function RFC_READ_TABLE but always getting a Data Buffer Exceeded Exception.

final JCoConnection managedConnection2 = sapCoreJCoManagedConnectionFactory.getManagedConnection("JCoStateless",
        getClass().getName(), rfcDestination);

final JCoFunction function2 = managedConnection2.getFunction("RFC_READ_TABLE");

final JCoParameterList importParameterList2 = function2.getImportParameterList();

importParameterList2.setValue("QUERY_TABLE", "VBRK");
final JCoParameterList tableParameterList2 = function2.getTableParameterList();

final JCoTable optionsTable = tableParameterList2.getTable("OPTIONS");
String selectionFilter = "VBELN EQ '" + "0123456789" + "'";
optionsTable.appendRow();
optionsTable.setValue("TEXT", selectionFilter);

//execute function RFC_READ_TABLE
managedConnection2.execute(function2);

Can anybody point out my mistake?

Answer 1

You are getting this error because selected field do not fit into structure DATA ie TAB512. Further, Function Module RFC_READ_TABLE also limits if read exceeds 512 bytes per row of data.

You have applied OPTIONS to SELECT records but you did not limit SELECTED fields using FIELDS . If you will limit SELECTED fields then you will not face error Data Buffer Exceeded. It is also recommend to limit no of records using ROWCOUNT .