java - How to know that a table is locked or is being read by someone else when accessing it using JDBC connection?

Question

I tried inserting a row via JDBC connection in mysql database. Sometime I am unable to write them in the database reason being the same table was being read by some other program. I didn't get any exceptions regarding the failure of query. So how can I know the successful execution of query ???

Answer 1

我假设您正在使用preparedstatement 所以您可能正在使用pt.executeUpdate()插入现在pt的对象在哪里PreparedStatement 检查if(pt.executeQuery()>0) 是否为真然后插入成功否则不是

if(pt.executeQuery()>0)
{
System.out.println("inserted");
}
else
{
System.out.println("not inserted");
}

Answer 2

您应该在具有适当隔离集的事务中执行 INSERT。让司机来处理。