JDBC批量插入性能
我需要在mysql数据库中插入几亿条记录。我一次批量插入100万。请参阅下面的代码。这看起来很慢。有没有办法优化它?
try {
// Disable auto-commit
connection.setAutoCommit(false);
// Create a prepared statement
String sql = "INSERT INTO mytable (xxx), VALUES(?)";
PreparedStatement pstmt = connection.prepareStatement(sql);
Object[] vals=set.toArray();
for (int i=0; i<vals.length; i++) {
pstmt.setString(1, vals[i].toString());
pstmt.addBatch();
}
// Execute the batch
int [] updateCounts = pstmt.executeBatch();
System.out.append("inserted "+updateCounts.length);当年话下