Bangladesh Technical Education Board
Competency Based Training & Assessment (CBT&A) Under NTVQF

Error 500: Internal Server Error

URI
/utility/instlistOpen
Class
java.net.ConnectException
Message
Connection refused

Trace

    Line | Method
->>   36 | doCall    in com.UtilityController$_closure1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    195 | doFilter  in grails.plugin.cache.web.filter.PageFragmentCachingFilter
|     63 | doFilter  in grails.plugin.cache.web.filter.AbstractFilter
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread

Caused by TransactionException: JDBC begin failed: 
->>   36 | doCall    in com.UtilityController$_closure1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    195 | doFilter  in grails.plugin.cache.web.filter.PageFragmentCachingFilter
|     63 | doFilter  in grails.plugin.cache.web.filter.AbstractFilter
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread

Caused by CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
->>  411 | handleNewInstance in com.mysql.jdbc.Util
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1116 | createCommunicationsException in com.mysql.jdbc.SQLError
|    344 | <init> .  in com.mysql.jdbc.MysqlIO
|   2332 | coreConnect in com.mysql.jdbc.ConnectionImpl
|   2369 | connectOneTryOnly in     ''
|   2153 | createNewIO in     ''
|    792 | <init> .  in     ''
|     47 | <init>    in com.mysql.jdbc.JDBC4Connection
|    411 | handleNewInstance in com.mysql.jdbc.Util
|    381 | getInstance in com.mysql.jdbc.ConnectionImpl
|    305 | connect . in com.mysql.jdbc.NonRegisteringDriver
|     38 | createConnection in org.apache.commons.dbcp.DriverConnectionFactory
|    582 | makeObject in org.apache.commons.dbcp.PoolableConnectionFactory
|   1181 | borrowObject in org.apache.commons.pool.impl.GenericObjectPool
|    106 | getConnection in org.apache.commons.dbcp.PoolingDataSource
|   1044 | getConnection in org.apache.commons.dbcp.BasicDataSource
|     36 | doCall .  in com.UtilityController$_closure1
|    195 | doFilter  in grails.plugin.cache.web.filter.PageFragmentCachingFilter
|     63 | doFilter  in grails.plugin.cache.web.filter.AbstractFilter
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread

Caused by ConnectException: Connection refused
->>  339 | doConnect in java.net.AbstractPlainSocketImpl
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    200 | connectToAddress in     ''
|    182 | connect . in     ''
|    392 | connect   in java.net.SocksSocketImpl
|    579 | connect . in java.net.Socket
|    528 | connect   in     ''
|    425 | <init> .  in     ''
|    241 | <init>    in     ''
|    257 | connect . in com.mysql.jdbc.StandardSocketFactory
|    294 | <init>    in com.mysql.jdbc.MysqlIO
|   2332 | coreConnect in com.mysql.jdbc.ConnectionImpl
|   2369 | connectOneTryOnly in     ''
|   2153 | createNewIO in     ''
|    792 | <init>    in     ''
|     47 | <init> .  in com.mysql.jdbc.JDBC4Connection
|    411 | handleNewInstance in com.mysql.jdbc.Util
|    381 | getInstance in com.mysql.jdbc.ConnectionImpl
|    305 | connect   in com.mysql.jdbc.NonRegisteringDriver
|     38 | createConnection in org.apache.commons.dbcp.DriverConnectionFactory
|    582 | makeObject in org.apache.commons.dbcp.PoolableConnectionFactory
|   1181 | borrowObject in org.apache.commons.pool.impl.GenericObjectPool
|    106 | getConnection in org.apache.commons.dbcp.PoolingDataSource
|   1044 | getConnection in org.apache.commons.dbcp.BasicDataSource
|     36 | doCall    in com.UtilityController$_closure1
|    195 | doFilter  in grails.plugin.cache.web.filter.PageFragmentCachingFilter
|     63 | doFilter  in grails.plugin.cache.web.filter.AbstractFilter
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run . . . in java.lang.Thread

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