我尝试用ODP.NET编写C#代码来调用包中的函数。我收到以下两个错误:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to INSERT_FUNC'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
ORA-06550: line 1, column 7:
PLS-00221: 'INSERT_FUNC' is not a procedure or is undefined
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
我的OracleCommand
设置为:
cmd.CommandText = "PKG_NAME.INSERT_FUNC";
cmd.CommandType = CommandType.StoredProcedure;
ReturnValue
参数?我见过很多论坛都在讨论是否需要在ReturnValue
对象上添加OracleParameter
参数作为第一个OracleCommand
。我很感激任何建议。
CREATE OR REPLACE
PACKAGE BODY pkg_name IS
FUNCTION insert_func (
i_description IN tableName.description%TYPE,
i_theme IN tableName.theme%TYPE,
o_id OUT tableName.id%TYPE,
o_error_msg OUT VARCHAR2 )
RETURN NUMBER
IS
l_program VARCHAR2(100) := 'PKG_NAME.INSERT_FUNC';
BEGIN
INSERT INTO tablea ( event_id, id, description, theme, lock_version )
VALUES ( rms12.tablea_seq.NEXTVAL, rms12.tablea_id_seq.NEXTVAL, i_description, i_theme, NULL );
INSERT INTO tableb ( id, description, theme )
VALUES ( rms12.id_seq.CURRVAL, i_description, i_theme );
SELECT rms12.id_seq.CURRVAL
INTO o_id
FROM dual;
RETURN 1;
EXCEPTION
WHEN OTHERS THEN
o_error_msg := sql_lib.create_msg(
'PACKAGE_ERROR', SQLERRM, l_program, TO_CHAR( SQLCODE ) );
RETURN 0;
END insert_func;
END pkg_name;
答案 0 :(得分:22)
这是我在这个论坛上的第一个问题,我很乐意发表自己的答案。
我们可以通过设置CommandType.StoredProcedure
来使用ODP.NET调用oracle包函数。
ORA-06550: line 1, column 7:
PLS-00221: 'INSERT_FUNC' is not a procedure or is undefined
ORA-06550: line 1, column 7: PL/SQL: Statement ignored
如果出现此错误,只需将此行添加为命令对象的第一个参数:
cmd.Parameters.Add("Return_Value", OracleDbType.Int16,
ParameterDirection.ReturnValue);
以下是工作代码:
using (var conn = new OracleConnection(oradb))
using (var cmd = conn.CreateCommand())
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "PKG_NAME.INSERT_FUNC";
cmd.BindByName = true;
cmd.Parameters.Add("Return_Value", OracleDbType.Int16,
ParameterDirection.ReturnValue);
cmd.Parameters.Add("i_description", OracleDbType.Varchar2, 1000,
promotionEventSetupDetails.PromotionDescription,
ParameterDirection.Input);
cmd.Parameters.Add("i_theme", OracleDbType.Varchar2, 80,
promotionEventSetupDetails.PromotionTheme,
ParameterDirection.Input);
cmd.Parameters.Add("o_id", OracleDbType.Varchar2,
ParameterDirection.Output);
cmd.Parameters.Add("o_error_msg", OracleDbType.Varchar2,
ParameterDirection.Output);
conn.Open();
using (var dr = cmd.ExecuteReader())
{
// do some work here
}
}
答案 1 :(得分:1)
对于最新版本的Oracle,这必须是新的。我之前能够使用我的C#代码中的所有输入参数之后列出的返回值参数来执行此操作,但是在12c上执行此操作后,我遇到了这个问题,现在可以使用返回val param的这个建议。
答案 2 :(得分:0)
我创建了一个通用方法,可以帮助您获得函数结果
var result = await
dbManager.ExecuteFunctionResultAsync<Oracle.ManagedDataAccess.Types.OracleDecimal>(
functionName, parameters.List);
public async Task<T> ExecuteFunctionResultAsync<T>(string spName, IEnumerable<OracleParameter> paramaters)
{
using (OracleConnection connection = new OracleConnection(this.connectionString))
{
connection.Open();
using (OracleCommand comm = new OracleCommand(spName, connection))
{
comm.CommandType = CommandType.StoredProcedure;
comm.BindByName = true;
string returnParam = "return_value";
comm.Parameters.Add(new OracleParameter() {
ParameterName = returnParam,
Direction = ParameterDirection.ReturnValue,
OracleDbType = OracleDbType.Int16,
});
this.SetCommandParameters(comm, paramaters);
await comm.ExecuteNonQueryAsync();
var result = (T)comm.Parameters[returnParam].Value;
return result;
}
}
}
private void SetCommandParameters(OracleCommand command, IEnumerable<OracleParameter> paramaters)
{
if (paramaters != null)
{
foreach (OracleParameter p in paramaters)
{
command.Parameters.Add(p);
}
}
}