c# - mysqldump.exe not taking full backup of mysql database -

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i have procedure backing mysql database.and have different mysql servers. procedure works on of mysql servers.but on of servers won't works proper , create backup file size of 1kb.

code

public void databasebackup(string exelocation, string dbname) {     try     {         string tmestr = "";         tmestr = dbname + "-" + datetime.now.tostring("hh.mm.ss.ffffff") + ".sql";         tmestr = tmestr.replace("/", "-");         tmestr = "c:/" + tmestr;         streamwriter file = new streamwriter(tmestr);         processstartinfo proc = new processstartinfo();         string cmd = string.format(@"-u{0} -p{1} -h{2} {3}", "uid", "pass", "host", dbname);         proc.filename = exelocation;         proc.redirectstandardinput = false;         proc.redirectstandardoutput = true;         proc.arguments = cmd;         proc.useshellexecute = false;         proc.createnowindow = true;         process p = process.start(proc);         string res;         res = p.standardoutput.readtoend();         file.writeline(res);         p.waitforexit();         file.close();     }     catch (ioexception ex)     {      } }

can 1 tell me problem , how can solve it.

finally got answer. need select , lock_table privilege on mysql user or database on want backup. after setting these privilege on database able take full backup of database.


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