The cci_set_autocommit function configures the auto-commit mode of current database connection. It is only used to turn ON/OFF of auto-commit mode. When this function is called, every transaction being processed is committed regardless of configured mode.
Note that CCI_DEFAULT_AUTOCOMMIT, broker parameter configured in the cubrid_broker.conf file, determines whether it is in auto-commit mode upon program startup.
int cci_set_autocommit (int conn_handle, CCI_AUTOCOMMIT_MODE autocommit_mode)