- #Oracle database startup time how to#
- #Oracle database startup time install#
- #Oracle database startup time full#
Note that the order of the commands is important. (you can verify if everything is shutdown via ps aux | grep 'tnsl\|ora') $ echo -e 'connect / as sysdba\nshutdown\nquit'| sqlplus /nolog $ echo -e 'connect / as sysdba\nstartup\nquit'| sqlplus /nologĪnd a dbshut $ORACLE_HOME$ is basically equivalent to: $ lsnrctl stop The listener creates a dedicated server, which can start the database instance.
Your client is connected to the database with the SYSDBA privilege. (times on a Core i7/2.8GHz system, slow spinning hard disk.) How dbstart/dbshut workĪ dbstart $ORACLE_HOME$ call is basically equivalent to: $ lsnrctl start To start a database instance using Oracle Net, the following must be true: The database is statically registered with an Oracle Net listener. If there is something wrong with database I see this in logs, but I have to wait 2-5 minutes.
#Oracle database startup time how to#
The application takes 2-5 minutes to start. How to know historical information of Instance startup time (Doc ID 2095732.1) Last updated on JANUApplies to: Oracle Database - Enterprise Edition - Version 10.2.0. Symptoms Our databases are taking 7 minutes from mount to open. For our application we have a configuration file for connecting to the Oracle database (URL, username, password). ―――――――――――――――――――――――――――――――――――――――――――――――――――――Ĭustom startup 27.9 s lsnrctl, sqlplus, emctlĬustom shutdown 31.0 s lsnrctl, sqlplus, emctl 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. Using dbstart/ dbshut is an improvement above the custom method mentioned in the question: method time called tools Then you can use the scripts like this: $ whoamiĭbstart brings all up which is needed for Pro*C/OCI programs.
#Oracle database startup time install#
They are available under $ORACLE_HOME/bin.Īfter a fresh install you have to edit the /etc/oratab file: # cat /etc/oratab
#Oracle database startup time full#
– For performing full database recovery database is opened in mount stage.You can use the dbstart/ dbshut scripts which come with an Oracle install. The below query gives the output of the last 10 start times of the database along with the timezone in Oracle, Click here for sample output. – Adding, dropping, or renaming redo log files is also done in mount stage. Sometimes we have to find when the database is started with which timezone especially when the database is getting rebooted unknowingly in Oracle. You can look at difference between current time and startup time. – This stage is normally used for maintenance operations like renaming datafiles, enabling and disabling archiving options. The startuptime field from vinstance view provides the time at which databases was started. – The database is still closed and only the DBA can access it. SELECT INSTANCENAME,TOCHAR (STARTUPTIME, 'HH24:MI DD-MON-YY') FROM DBAHISTDATABASEINSTANCE ORDER BY STARTUPTIME DESC Find the uptime of Oracle Database. – It then reads the control files to find the names of the data files and the online redo log files that it will attempt to access when opening the database. Check the startup history timing of Oracle Instance. – For this, the instance checks the controlfiles specified under CONTROL_FILES parameter and opens it. – Mounting the instance means associating the started instance with a specified database. – In this phase the instance will mount the database. SQL> alter database open Database altered. Oracle database normal startup and shutdown history is ideally captured in the instance alert log. Here we wait for about 10 minutes, then open the database. Find Oracle Database Uptime & Startup History. Starting the instance in nomount stage is usually required for database creation or for creating or recovering the controlfiles. Database Startup Time For database, the startup time is actually the open time.
The instance is now started and the database is in nomount stage.
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