Java Oracle exception - “maximum number of expressions in a list is 1000”

Question

I am passing a list of Strings to my query(SQL query written) to fetch the required data. But I am getting this exception:

ora-01795 maximum number

Answer 1

If you are able to convert your db-side logic from a query into a stored procedure, then you can pass longer arrays (collections) to it.

Here you can find a brief example how to do it. The link to the docs is outdated, so here's a link to the 9i docs http://docs.oracle.com/cd/B10500_01/java.920/a96654/oraarr.htm#1040124

import java.io.*;
import java.sql.*;
import oracle.sql.*;
import oracle.jdbc.driver.*;

public class ArrayDemo
{
    public static void passArray() throws SQLException
    {
        Connection conn =
            new OracleDriver().defaultConnection();

        int intArray[] = { 1,2,3,4,5,6 };

        ArrayDescriptor descriptor =
            ArrayDescriptor.createDescriptor( "NUM_ARRAY", conn );

        ARRAY array_to_pass =
            new ARRAY( descriptor, conn, intArray );

        OraclePreparedStatement ps =
            (OraclePreparedStatement)conn.prepareStatement
            ( "begin give_me_an_array(:x); end;" );

        ps.setARRAY( 1, array_to_pass );

        ps.execute();

    }
}

and the SQL part

create or replace type NUM_ARRAY as table of number;

create or replace
procedure give_me_an_array( p_array in num_array )
as
begin
    for i in 1 .. p_array.count
    loop
        dbms_output.put_line( p_array(i) );
    end loop;
end;