How to Backup mysql db from Remote to local without mysql local installation?

问题

Good Day, I am trying to take mysql backup from remote server to my local machine. I am able to do so, when i have mysql client installed on local machine. But when the client doesnt have local mysql client installation, it is not working ...

I have been connecting to mysql server using the jdbc connection and my code snippet is as follows:

try{     
String cs = "jdbc:mysql://" + dbh + ":" + dbport + "/" + database + "?user=" + USER + "&password=" + PASS+"";
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = java.sql.DriverManager.getConnection(cs);
String executeCmd = "";
     if(connection!=null){
        executeCmd = "mysqldump -u "+USER+" -p"+PASS+" "+database+" -r "+path;   
        Process runtimeProcess =Runtime.getRuntime().exec(executeCmd);
        int processComplete = runtimeProcess.waitFor();
        if(processComplete == 0){
            System.out.println("Backup taken successfully");
        } else {
            System.out.println("Could not take mysql backup");
        }
    } else{
        System.out.println("connection not sucess");
    }
}catch (Exception e) {
            e.printStackTrace();
}

I think this might be some problem with mysqldump PATH, so i copied this file to client machine, and specified absolute path to mysqldump in executeCmd. This time the backupfile is created in specified path, but its empty & processComplete returns a value 2. My Questions are,

Do i need any other mysql files to run the mysqldump command? If so how to do that other than copy these commands to local machine?
What does waitFor() with return value 2 mean?

Thanks & Regards

iMmo

回答1:

Solved it!, I forget to specify the HostIP & port with the mysqldump command Changed my executeCmd parameter as following:

executeCmd = PathToMySqlDumpFile+"mysqldump -h "+HOSTIP+" -P "+PORT+" -u "+USER+" -p"+PASS+" "+database+" -r "+path;

along with the mysqldump file path. We only need the mysqldump file to take the backup from remote server to local. No need for mysql client installation.

来源：https://stackoverflow.com/questions/16954543/how-to-backup-mysql-db-from-remote-to-local-without-mysql-local-installation

标签

java

mysqldump