CONM7007I: Mapping the following SQLException, with ErrorCode -901 and SQLS

Question

When I execute a Query it throws
CONM7007I: Mapping the following SQLException, with ErrorCode -901 and SQLState 58004, to a StaleConnectionException: java.sql.SQLException: [SQL0901] Error del sistema SQL.
I am using iSeries DB2 and Websphere V5.
Thanks for your help.

Answer 1

Retrying solved my problem:
StaleConnectionException
This exception (com.ibm.websphere.ce.cm.StaleConnectionException) indicates that the
connection currently being held is no longer valid. This can occur for numerous reasons,
including the following:
The application tries to get a connection and fails, as when the database is not started.
A connection is no longer usable due to a database failure. When an application tries to
use a connection it has previously obtained, the connection is no longer valid. In this
case, all connections currently in use by an application could get this error when they try
to use the connection.
The application using the connection has already called close() and then tries to use the
connection again.
The connection has been orphaned because the application had not used it in at most two
times the orphan timeout; then the application tries to use the orphaned connection.
The application tries to use a JDBC resource, such as a statement, obtained on a
now-stale connection.
Code that implements retries in case of StaleConnectionException...
boolean retry = false;
int numOfRetries = 0;
java.sql.Connection conn = null;
java.sql.Statement stmt = null;
do {
    try {
        //    assumes a datasource already obtained from JNDI
        conn = ds.getConnection();
        conn.setAutoCommit(true);
        stmt = conn.createStatement();
        stmt.execute("INSERT INTO EMPLOYEES VALUES
                (0101, 'Bill', 'R', 'Smith')");
    } catch(com.ibm.websphere.ce.cm.StaleConnectionException
            sce) {
        if(numOfRetries < 2) {   
            retry = true;
            numOfRetries++;
        } else {
            retry = false;
            //    throw error indicating a connection
            //    cannot be obtained
    } catch (java.sql.SQLException sqle) {
        //    handle other database problem
    } finally {
        //    always cleanup JDBC resources
        try {
            if(stmt != null) stmt.close();
        } catch (java.sql.SQLException sqle) {
            //    usually can be ignored
        try {
            if(conn != null) conn.close();
        } catch (java.sql.SQLException sqle) {
            //    usually can be ignored
} while (retry);