Question

I am getting

java.sql.SQLException: error occurred during batching: batch must be
either executed or cleared

in the below code. I want to execute two queries.

String sql_query="insert into m_status values(20,'test');select * from m_user";
String query1 = sql_query.toUpperCase();

String[] results = query1.split(";");

stmt = conn1.createStatement();
conn1.setAutoCommit(false); 
for (int i = 0; i < results.length; i++) {
    if(results[i].startsWith("SELECT")) {
        rs1 = stmt.executeQuery(results[i]);
    }
    else if(results[i].startsWith("INSERT")){
        stmt.addBatch(results[i]);
    }
}
int [] updateCounts = stmt.executeBatch();
conn1.commit(); 
if (rs1 != null)
    rs1.close();
if (stmt != null)
    stmt.close();
if (conn1 != null)
    conn1.close();

Answer 1

Use two statements, one for select queries and another one for updates. executeQuery checks if there batches for that Statament, and if so throws that error. Also, wrap your queries in a try-catch-finally block and close the resources in the finally block. As it is, your code could lead to connection leaks.