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Oracle Tutorials - Login to Server without an Instance

By: FYIcenter.com

(Continued from previous topic...)

How To Login to the Server without an Instance?

If your default instance is in trouble, and you can not use the normal login process to reach the server, you can use a special login to log into the server without any instance. Here is how to use SQL*Plus to log in as as a system BDA:

>cd (OracleXE home directory)
Enter user-name: SYSTEM/fyicenter AS SYSDBA
Connected to an idle instance

SQL> show instance
instance "local"

The trick is to put user name, password and login options in a single string as the user name. "AS SYSDBA" tells the server to not start any instance, and connect the session the idle instance.

Log in as SYSDBA is very useful for performing DBA tasks.

(Continued on next topic...)

  1. What Is Oracle Database 10g Express Edition?
  2. What Are the Limitations of Oracle Database 10g XE?
  3. What Operating Systems Are Supported by Oracle Database 10g XE?
  4. How To Download Oracle Database 10g XE?
  5. How To Install Oracle Database 10g XE?
  6. How To Check Your Oracle Database 10g XE Installation?
  7. How To Shutdown Your 10g XE Server?
  8. How To Start Your 10g XE Server?
  9. How Much Memory Your 10g XE Server Is Using?
  10. How To Start Your 10g XE Server from Command Line?
  11. How To Shutdown Your 10g XE Server from Command Line?
  12. How To Unlock the Sample User Account?
  13. How To Change System Global Area (SGA)?
  14. How To Change Program Global Area (PGA)?
  15. What Happens If You Set the SGA Too Low?
  16. What To Do If the StartDB.bat Failed to Start the XE Instance?
  17. How To Login to the Server without an Instance?
  18. How To Use "startup" Command to Start Default Instance?
  19. Where Are the Settings Stored for Each Instance?
  20. What To Do If the Binary SPFile Is Wrong for the Default Instance?
  21. How To Check the Server Version?

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