node.js Global connection already exists. Call sql.close() first

Question

I\'m trying to create web services using node.js from an sql server database,in the frontend when i call those 2 webservices simultaneously it throws an error Global connect

Answer 1

You must use ConnectionPool.

Next function returns a recordset with my query results.

async function execute2(query) {

    return new Promise((resolve, reject) => {

        new sql.ConnectionPool(dbConfig).connect().then(pool => {
            return pool.request().query(query)
        }).then(result => {

            resolve(result.recordset);

            sql.close();
        }).catch(err => {

            reject(err)
            sql.close();
        });
    });


}

Works fine in my code!