Topic: Database Administration >> Views related to Startup options
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| Title: Views related to Startup options |
| Navi |
Posted: Jun 27, 2007 08:46:11 AM |
Total Post: 60
Joined: Jun, 2007
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Hi,
Please any one answer this question.
1) Why we cant access or describe views related to USER,ALL,DBA when instance is started using STARTUP NOMOUNT,MOUNT?
For example views like user_objects,user_tables,all_sequences,dba_objects etc?
2) Why we can only access or describe Dictionary views when INSTANCE is started using STARTUP NOMOUNT,MOUNT?
For example Dictionary views like v$datafile,v$controlfile etc?
Regards,
Naveen |
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 Ratnaker |
| Posted: Jun 29, 2007 02:21:26 AM |  |
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Total Post: 136
Joined: Apr, 2007
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Hi Navi,
You can start an instance in various modes:
Start the instance without mounting a database. This does not allow access to the database and usually would be done only for database creation or the re-creation of control files.
Start the instance and mount the database, but leave it closed. This state allows for certain DBA activities, but does not allow general access to the database.
Start the instance, and mount and open the database. This can be done in unrestricted mode, allowing access to all users, or in restricted mode, allowing access for database administrators only.
K P Ratnaker
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