【发布时间】：2014-04-17 06:45:01
【问题描述】：
以下代码在 Oracle 的 SqlPlus（使用 Oracle 11.2.02.0g）中运行良好，但是当我通过 C# 代码连接和 ODBC 连接时，我被告知我的字符无效。
由于单引号在 SQLplus 中不起作用，我假设 ODBC 认为无效的字符是双引号。我试过大括号 '{' 和方括号 '[' 但仍然得到相同的错误 -> 错误 [HY000][Oracle][ODBC][Ora]ORA-00911:invalid character
任何帮助将不胜感激。我仍然不明白为什么 SQL 语句会因为连接类型而被不同地解释。
CREATE USER "AD1\EGRYXU" IDENTIFIED EXTERNALLY;
如果单独运行说明用户名与另一个用户或角色名称冲突，则会出错。它确实在数据库中创建用户。
C# 代码如下。
private void button1_Click(object sender, EventArgs e)
{
string happy = "";
string sql1 = "";
string sql2 = "";
string sql3 = "";
string sql4 = "";
string column;
int rownum = -1;
bool frst = false;
string dirIni = "\\\\ramxtxss021-f01\\hou_common_013\\globaluser\\";
string fileIni = "add_users.sql";
string transIniFullFileName = Path.Combine(dirIni, fileIni);
System.Data.Odbc.OdbcConnection conn = new System.Data.Odbc.OdbcConnection();
num_users = (usrdetails.Count > 0);
if (regions && num_users)
{
using (StreamWriter sw = new StreamWriter(transIniFullFileName))
{
for (int y = 0; y < usrdetails.Count; y++)
{
switch(usrdetails[y].add_del.ToUpper())
{
case "A":
sql1 = "CREATE USER \"" + usrdetails[y].userID.ToUpper() + "\" IDENTIFIED EXTERNALLY;";
sql2 = "GRANT EDMROLE TO \"" + usrdetails[y].userID.ToUpper() + "\";";
sql3 = "INSERT INTO MD_SITE_USER VALUES(generate_key(5), (select user_id from MD_SITE_USER where user_name = '" +
usrdetails[y].group + "') , {" + usrdetails[y].userID.ToUpper() + "}, " + usrdetails[y].seclev +
", '" + usrdetails[y].username.ToUpper() + "', 'U', '" + usrdetails[y].isext.ToUpper() + "', 'N');";
sw.WriteLine(sql1);
sw.WriteLine(sql2);
sw.WriteLine(sql3);
break;
case "D":
sql2 = "DELETE MD_SITE_APP_ACTION_OWNER WHERE user_id in (SELECT user_id FROM MD_SITE_USER where user_name = ‘"+ usrdetails[y].userID + "’+ and user_or_group = ‘U’);";
sql3 = "DELETE FROM MD_SITE_USER where user_name = ‘"+ usrdetails[y].userID + "’ and user_or_group = ‘U’;";
sql4 = "DROP USER "+ usrdetails[y].userID + " FROM USERS;";
sw.WriteLine(sql2);
sw.WriteLine(sql3);
sw.WriteLine(sql4);
break;
default:
MessageBox.Show("Add/Delete command argument not recognized for user\r\n" + usrdetails[y].userID + " \r\n Argument -> " + usrdetails[y].add_del);
break;
}
}
sw.Close();
}
for (int x = 0; x < region.Count; x++)
{
OdbcCommand command = new OdbcCommand();
conn.ConnectionString = "Driver={Oracle in OraClient11g_home1};" +
"Dbq=" + region[x].dbname +
";Uid=" + region[x].username + ";Pwd=" + region[x].password + ";";
try
{
string cmdTexts = File.ReadAllText(transIniFullFileName);
conn.Open();
using (conn)
{
command.Connection = conn;
command.CommandText = cmdTexts;
command.ExecuteNonQuery();
OdbcDataReader dr = command.ExecuteReader();
Form6.dataGridView2.AutoGenerateColumns = false;
if (!frst)
{
for (int i = 0; i < dr.FieldCount; i++)
{
column = dr.GetName(i);
Form6.dataGridView2.Columns.Add("col" + i, column);
Form6.dataGridView2.Columns[i].FillWeight = 1;
}
frst = true;
}
rownum++;
dataGridView1.Rows.Add();
dataGridView1.Rows[rownum].Cells[0].Value = "Results for Region -> " + Form5.region[x].dbname;
dataGridView1.Refresh();
while (dr.Read())
{
rownum++;
Form6.dataGridView2.Rows.Add();
for (int i = 0; i < dr.FieldCount; i++)
{
column = dr.GetValue(i).ToString();
Form6.dataGridView2.Rows[rownum].Cells[i].Value = column;
}
}
Form6.dataGridView2.Refresh();
Form6.dataGridView2.Show();
Form6.Show();
}
conn.Close();
Form6.dataGridView2.Refresh();
}
catch (Exception ex)
{
MessageBox.Show("Error Message: " + ex.Message);
}
}
}
else
{
if (!regions)
happy = "Error - You have not selected any regions.\r\n";
else
happy = "Regions are now selected.\r\n";
if (!num_users)
happy = happy + "Error - You have not entered any users.\r\n";
MessageBox.Show(happy);
}
File.Delete(transIniFullFileName);
}
【问题讨论】：
-
您可能想向我们展示您的 C# 代码...
-
这里有三个单独的语句。从 C# 执行时，这三个中的哪一个会导致错误？
-
据我所知，第一条和第二条语句（第三条取决于前两条）。现在也包含 C# 代码。
-
看起来您正试图在一次调用中向数据库发送三个单独的 SQL 语句。我怀疑这会奏效，尤其是当您结合 DML 和 DDL 时。如果您进行三个单独的数据库调用，每个语句一个，会发生什么情况？我还强烈建议您在
INSERT语句中使用绑定变量。 -
好的。我将其更改为仅一个语句，但是如果您查看语句下方，您会看到我仍然得到错误。但它确实创建了用户。