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Why statistics are different in oracle9i and oracle 10g?
Not sure about this, better we could try again with right samplesize in both the versions. Use DBMS_STATS.AUTO_SAMPLE_SIZE.ExecuteDBMS_STATS.GATHER_SCHEMA_STATS('SCOTT',estimate_percent=>DBMS_STATS.AUTO_SAMPLE_SIZE,GRANULARITY=>'ALL',CASCADE=>TRUE);
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What are the responsibilities of a Database Administrator ?
Installing and upgrading the Oracle Server and application tools.Allocating system storage and planning future storage requirements for the database system.Managing primary database structures (tablespaces)Managing primary objects (table,views,indexes)Enrolling users and maintaining system security.Ensuring compliance with Oralce license agreementControlling and monitoring user access...