7/3/2023 0 Comments Oracle database startup time![]() # Remove "&" if you don't want startup as a background process. The startuptime field from vinstance view provides the time at which databases was started. # will not prompt the user for any values # The following command assumes that the oracle login Instance startup and shutdown take very long time but there is no indication of process hang, deadlock, or recovery process taking time. SQL> alter database open Database altered. ![]() Here we wait for about 10 minutes, then open the database. Symptoms Our databases are taking 7 minutes from mount to open. Oracle Database - Enterprise Edition - Version 19.3.0.0.0 and later Microsoft Windows 圆4 (64-bit) Symptoms. Database Startup Time For database, the startup time is actually the open time. # Set ORA_OWNER to the user id of the owner of the Database Startup Taking More Time During Alter Database Open (Doc ID 2493490.1) Last updated on JANUApplies to: Oracle Database - Enterprise Edition - Version 11.2.0.4 and later Information in this document applies to any platform. # from which you wish to execute dbstart and dbshut # Set ORA_HOME to be equivalent to the $ORACLE_HOME # description: Oracle auto start-stop script. Change the value of the ORA_OWNER environment variable to the user name of the owner of the database installed in the Oracle home directory (typically, oracle). For ex, if a large transaction database crashes and when restarted, instance may come up immediately but it may take even an hour for database to open fully as it may have to do crash recovery of several blocks. These values specify that dbstart auto-starts the database only after the Automatic Storage Management instance is started.Ĭhange the value of the ORA_HOME environment variable to specify the Oracle home directory for the installation. Just to make it clear, this is to find out the startup time of a database instance only and NOT the database startup time. To do this, you must change the oratab entry of the database and the Automatic Storage Management installation to use a third field with the value W and N, respectively. This is the default behavior for an Automatic Storage Management cluster. You can set dbstart to autostart a single-instance database which uses an Automatic Storage Management installation auto-started by Oracle Clusterware. Then, change the last field for each to Y. For each database for which you want to automate shutdown and startup, first determine the instance identifier (SID) for that database, which is identified by the SID in the first field. In this example, the values Y and N specify whether you want the scripts to start or shut down the database, respectively. On IBM AIX on POWER Systems (64-Bit) and Linux: # vi /etc/oratabĭatabase entries in the oratab file are displayed in the following format: On Oracle Solaris: # vi /var/opt/oracle/oratab SQL> select instancename, tochar (startuptime,'mm/dd/yyyy hh24:mi:ss') as startuptime from vinstance Sample output: You can look at difference between current time and startup time. For more information about Oracle (NYSE:ORCL), visit open the file, use one of the following commands: The startuptime field from vinstance view provides the time at which databases was started. Oracle offers a comprehensive and fully integrated stack of cloud applications and platform services. My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. ![]() To view full details, sign in with your My Oracle Support account.ĭon't have a My Oracle Support account? Click to get started! These values specify that dbstart auto-starts the database only after the Automatic Storage Management instance is started. This document provides information to query information on the historical instance startup time. To do this, you must change the oratab entry of the database and the Automatic Storage Management installation to use a third field with the value W and N, respectively. Information in this document applies to any platform. Oracle Database Exadata Express Cloud Service - Version N/A and later Oracle Database Cloud Exadata Service - Version N/A and later If there is something wrong with database I see this in logs, but I have to wait 2-5 minutes. Oracle Cloud Infrastructure - Database Service - Version N/A and later The application takes 2-5 minutes to start. Oracle Database Exadata Cloud Machine - Version N/A and later Oracle Database - Enterprise Edition - Version 10.2.0.1 and later How to know historical information of Instance startup time
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