Oracle client is not able to connect to Oracle server
although tnsnames.ora file has
valid enteries. Oracle error message is “ cannot resolve
net service name”.
Mention any three reasons.
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Can you take Online Backups if the the database is running in NOARCHIVELOG mode? 5. How do you bring the database in ARCHIVELOG mode from NOARCHIVELOG mode? 6. You cannot shutdown the database for even some minutes, then in which mode you should run the database?
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