- Failures on connect which raise dbapi.Error

will forward the error to dialect.is_disconnect()
and set the "connection_invalidated" flag if
the dialect knows this to be a potentially
"retryable" condition.  Only Oracle ORA-01033
implemented for now.  [ticket:2201]

- Added ORA-01033 to disconnect codes, which
can be caught during a connection
event.  [ticket:2201]

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/sqlalchemy/dialects/oracle/cx_oracle.py b/lib/sqlalchemy/dialects/oracle/cx_oracle.py
index 4f0cdffcf..29d9e2ab0 100644
--- a/lib/sqlalchemy/dialects/oracle/cx_oracle.py
+++ b/lib/sqlalchemy/dialects/oracle/cx_oracle.py
@@ -689,11 +689,14 @@ class OracleDialect_cx_oracle(OracleDialect):
         error, = e.args
         if isinstance(e, self.dbapi.InterfaceError):
             return "not connected" in str(e)
-        else:
+        elif hasattr(error, 'code'):
             # ORA-00028: your session has been killed
             # ORA-03114: not connected to ORACLE
             # ORA-03113: end-of-file on communication channel
-            return error.code in (28, 3114, 3113)
+            # ORA-01033: ORACLE initialization or shutdown in progress
+            return error.code in (28, 3114, 3113, 1033)
+        else:
+            return False
 
     def create_xid(self):
         """create a two-phase transaction ID.