java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO)

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Root Cause Analysis

  1. java.sql.SQLException

    Access denied for user ''@'localhost' (using password: NO)

    at com.mysql.jdbc.MysqlIO.checkErrorPacket()
  2. MySQL jdbc
    NonRegisteringDriver.connect
    1. com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2847)
    2. com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:750)
    3. com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3558)
    4. com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1151)
    5. com.mysql.jdbc.Connection.createNewIO(Connection.java:1768)
    6. com.mysql.jdbc.Connection.<init>(Connection.java:430)
    7. com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:268)
    7 frames
  3. Java RT
    DriverManager.getConnection
    1. java.sql.DriverManager.getConnection(DriverManager.java:525)
    2. java.sql.DriverManager.getConnection(DriverManager.java:193)
    2 frames
  4. ru.runa.wf
    WorkflowBotInvoker$BotThread.run
    1. ru.runa.wf.logic.bot.DatabaseTaskHandler.handle(DatabaseTaskHandler.java:100)
    2. ru.runa.wf.logic.bot.WorkflowMultitaskBot.doTask(WorkflowMultitaskBot.java:144)
    3. ru.runa.wf.logic.bot.WorkflowMultitaskBot.execute(WorkflowMultitaskBot.java:118)
    4. ru.runa.wf.logic.bot.WorkflowBotInvoker$BotThread.run(WorkflowBotInvoker.java:97)
    4 frames