Java JDBC - Multiple prepared statement bulk insert

Question

Using JDBC (Oracle) I need to insert about thousand rows into each of two tables. Something like this:

\"INSERT INTO TABLE_A (A_ID, A_NAME, A_LAST_NAME) VALU         


        

Answer 1

If I understand your problem correctly, you have a problem with NEXTVAL and CURRVAL since CURRVAL might change due to other DB use? If so, you can change your code to this order:

currentNextVal = select NEXTVAL
INSERT into table_a with currentNextVal as the id
INSERT into table_b with the same currentNextVal 

Did I understand your problem correctly?

Answer 2

You can try

PreparedStatement ps = conn.prepareStatement(insert, Statement.RETURN_GENERATED_KEYS);
...
ps.executeBatch();

then

ResultSet rs = ps.getGeneratedKeys();
ps = conn.prepareStatement("INSERT INTO TABLE_B (B_ID, B_DESCRIPTION) VALUES (?, ?)");

for ( int counter =0;rs.next(); counter++ ) { 
  ps.setInt(1,rs.getInt(0));
  ps.setString(2, myCollection.get(counter).getDescription());
  ps.addBatch();
}
...