DBA Tips Archive for Oracle
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by Michael New, MichaelNew@earthlink.net, Gradation LLC
After starting your Oracle database, you are confronted with the following warning:
After a bit of research, you determine that someone inadvertently set an Oracle initialization parameter that is marked as obsolete and/or deprecated. For the purpose of this example, let's assume that someone set "log_archive_start=true" in your Oracle10g database.
You now want to correct this action and remove the setting. No problem. If you are using a text-based initialization parameter file (init<ORACLE_SID>.ora), simply remove the entry from the text file and restart the database. Problem solved.
However, what if you are using an Oracle SPFILE? You think about this for a few seconds and decide to set the value of log_archive_start back to its default setting of FALSE in an effort to clear the setting. To your surprise, the warning still exists:
At this point, you are tempted to just open the binary SPFILE and remove the entry! I don't think I have to tell you this would be a very bad idea!
Well, the solution is simple - simply reset the initialization parameter. Take note that you must supply the SID= option to the ALTER SYSTEM command.
The following statement will reset the above initialization parameter (removing it from the SPFILE):
Say good-bye to your warning message!
Jeffrey Hunter is an Oracle Certified Professional, Java Development Certified Professional, Author, and an Oracle ACE. Jeff currently works as a Senior Database Administrator for The DBA Zone, Inc. located in Pittsburgh, Pennsylvania. His work includes advanced performance tuning, Java and PL/SQL programming, developing high availability solutions, capacity planning, database security, and physical / logical database design in a UNIX / Linux server environment. Jeff's other interests include mathematical encryption theory, tutoring advanced mathematics, programming language processors (compilers and interpreters) in Java and C, LDAP, writing web-based database administration tools, and of course Linux. He has been a Sr. Database Administrator and Software Engineer for over 20 years and maintains his own website site at: http://www.iDevelopment.info. Jeff graduated from Stanislaus State University in Turlock, California, with a Bachelor's degree in Computer Science and Mathematics.
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Last modified on
Thursday, 23-Sep-2010 02:06:18 EDT
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