Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Oracle Community by Olivier Chorier Guest, 1 year ago
Connection could not be allocated because: 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.
via Stack Overflow by Evgeni
, 2 years ago
Connection could not be allocated because: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect.
via itquestionz.com by Unknown author, 2 years ago
Connection could not be allocated because: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect.
via ikende.com by Unknown author, 2 years ago
Connection could not be allocated because: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect.
via com.br by Unknown author, 2 years ago
Connection could not be allocated because: FATAL: banco de dados "null" n?o existe
via Stack Overflow by Krystian
, 2 years ago
Connection could not be allocated because: java.net.ConnectException: Błąd podczas łączenia z serwerem localhost na porcie 1527 z komunikatem Connection refused: connect.
com.sun.appserv.connectors.internal.api.PoolingException: Connection could not be allocated because: 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.	at com.sun.enterprise.resource.pool.ConnectionPool.createSingleResource(ConnectionPool.java:924)	at com.sun.enterprise.resource.pool.ConnectionPool.createResource(ConnectionPool.java:1189)	at com.sun.enterprise.resource.pool.datastructure.RWLockDataStructure.addResource(RWLockDataStructure.java:98)