Postgres: Do not attempt to deallocate a statement if the connection is no longer active. #3258
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The PostgreSQL adapter attempts to clear out the statement cache on
reconnect!
, which in turn issues aDEALLOCATE
query for each cached statement. If the connection has been lost, the query results in anPGError
being raised.This change first checks the connection is OK before attempting to
DEALLOCATE
the statement.Fixes issue #3160