After running a large number of tests, all of which repeatably and consistently
fail in and around approximately 1970-1990 cache updates, I have made the
following change.
After this change, the code then fails between 3900-4000 updates. It appears
that this is a minor defect or at least a suboptimization with the original
connection code.
The connection is stored into TLS during the
NonManagedConnectionFactory.prepare() method but it seems it is not put in
place after the null detect/create code within
NonManagedConnectionFactory.getConnection.
I urge you to examine this.
e.g.
...
public Connection getConnection()
{
Connection con = (Connection) connection.get();
if(con == null)
{
try
{
con = DriverManager.getConnection(url, usr, pwd);
// CODE ADDED HERE
connection.set(con);
// END CODE MODIFICATION
}
catch(SQLException e)
...
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