cx_Oracle 連線 Oracle

cx_Oracle has the capability of starting up the database using a privileged connection. This example shows a script that could be run as the ‘oracle’ operating system user who administers a local database installation on Linux. It assumes that the environment variable ORACLE_SID has been set to the SID of the database that should be started:

# the connection must be in PRELIM_AUTH mode to perform startup connection = cx_Oracle.connect("/", mode = cx_Oracle.SYSDBA | cx_Oracle.PRELIM_AUTH) connection.startup()# the following statements must be issued in normal SYSDBA mode connection = cx_Oracle.connect("/", mode = cx_Oracle.SYSDBA, encoding="UTF-8") cursor = connection.cursor() cursor.execute("alter database mount") cursor.execute("alter database open")

Similarly, cx_Oracle has the ability to shutdown the database using a privileged connection. This example also assumes that the environment variable ORACLE_SID has been set:

# need to connect as SYSDBA or SYSOPER connection = cx_Oracle.connect("/", mode = cx_Oracle.SYSDBA)# first shutdown() call must specify the mode, if DBSHUTDOWN_ABORT is used, # there is no need for any of the other steps connection.shutdown(mode = cx_Oracle.DBSHUTDOWN_IMMEDIATE) # now close and dismount the database cursor = connection.cursor() cursor.execute("alter database close normal") cursor.execute("alter database dismount") # perform the final shutdown call connection.shutdown(mode = cx_Oracle.DBSHUTDOWN_FINAL)