Starting and Stopping Oracle Database¶
This chapter covers how to start up and shutdown Oracle Database using cx_Oracle.
Starting Oracle Database Up¶
cx_Oracle can start up a database instance. A privileged connection is
required. 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")
To start up a remote database, you may need to configure the Oracle Net
listener to use static service registration
by adding a
SID_LIST_LISTENER entry to the database listener.ora file.
Shutting Oracle Database Down¶
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)