java.sql.SQLException: Error in allocating a connection. Cause: null Error Code: 0

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

Samebug tips

Do you know how to solve this issue? Write a tip to help other users and build your expert profile.

Solutions on the web

via Oracle Community by losintikfos, 1 year ago
Error in allocating a connection. Cause: null Error Code: 0
via Oracle Community by 807581, 1 year ago
Error in allocating a connection. Cause: Connection could not be allocated because: Communications link failure Last packet sent to the server was 0 ms ago.Error Code: 0
via Google Groups by Kolszew, 3 months ago
Error in allocating a connection. Cause: Error instantiating class : org.firebirdsql.jdbc.FBDataSourceError Code: 0
via Oracle Community by 487675, 1 year ago
Error in allocating a connection. Cause: Connection could not be allocated because: java.net.ConnectException: Connection refused: connect。 Error Code: 0
via Oracle Community by ptony, 1 year ago
Error in allocating a connection. Cause: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlDataSource Error Code: 0
via Oracle Community by 807581, 1 year ago
Error in allocating a connection. Cause: Connection could not be allocated because: Communications link failure Last packet sent to the server was 0 ms ago.Error Code: 0
java.sql.SQLException: Error in allocating a connection. Cause: null Error Code: 0
at oracle.toplink.essentials.jndi.JNDIConnector.connect(JNDIConnector.java:145)

Users with the same issue

Samebug visitor profile picture
Unknown user
Once, 2 years ago

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.