Can I use spool command in stored procedure and execute stored procedure from VB code?

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I am new to SQL developer
My requirement is to store million of records in txt file
So first I tried with executing spool command through VB.net and not succeeded so I am trying to create one store procedure with spool command and execute from VB code

What I have tried:

Using mOracleConnection As New OracleConnection(mConnectionString)
mOracleConnection.Open()
Dim mOracleCommand As OracleCommand
Dim mOracleDataReader As OracleDataReader
mOracleCommand = mOracleConnection.CreateCommand()
mOracleCommand.CommandType = CommandType.Text
mOracleCommand.CommandText = GetStrSQL()
mOracleCommand.ExecuteNonQuery()
End Using

Private Sub GetStrSQL() AS String

Dim mStrSQL AS New StringBuilder
With mStrSQl
.AppendLine(" spool D:\30Aug\Testing.txt ")

.AppendLine(" SELECT * FROM [Payroll.Payslip].Payslip WHERE PayslipID > 1500; ")
.AppendLine(" spool off ")

End With

Posted 2-Sep-18 3:32am

navidshaikh0702

Updated 2-Sep-18 5:52am

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Wendelius · Answer 1 · 2018-09-02T05:52:00

Solution 1

Spool is a command that is recognized by SQL developer. It is not available when you're working with ADO.NET commands.

Some options you have
- Spool the data into a file using SQL Developer or SQL*Plus
- Using ADO.NET loop through the result set in VB.NET and for each line append the data into a file
- Using a stored procedure write the data into a file on the server side. For this you can use UTL_FILE[^]

Posted 2-Sep-18 5:52am

Wendelius

Comments

navidshaikh0702 2-Sep-18 13:06pm

Thanks for suggestion!!!
But thing is I can't iterate through each record as it is time consuming
So I am trying with making a stored procedure with spool command
Kindly suggest me how to execute this procedure

Wendelius 2-Sep-18 14:32pm

What comes to the data handling there are two options. Either the procedure writes the data into a file on the server side or the data is returned to the client where it's written into the file by looping the record set.

If you want to write the data into a file inside the procedure then UTL_FILE package (see the link in the answer) is a common way to do it.