Oracle auto updating
To disable the auto “read()” feature of the dialect, the flag Two phase transactions are not supported under cx_Oracle due to poor driver support.
As of cx_Oracle 6.0b1, the interface for two phase transactions has been changed to be more of a direct pass-through to the underlying OCI layer with less automation.
These types correspond to the VARCHAR2 and CLOB Oracle datatypes by default.
In addition, supported DBAPIs have further limitations (see ).