1. To view all the table from dictionary :
SQL> select table_name from dictionary;
2. To identify the database name :
SQL> select name from v$database;
3. To identify the instance name :
SQL> select instance from v$thread;
4. To know the size of the database blocks :
SQL> select value from v$parameter where name =’db_block_size’;
5. List the name of the data files :
SQL> select name from v$datafile;
6. Identify the datafile that makes up the system tablespace :
SQL> select file_name from dba_data_files where tablespace_name = ‘SYSTEM’;
7. To check how much free space is available in database and how much is used:
SQL>select sum(bytes)/1024 “free space in KB” from dba_free_space;
SQL>select sum(bytes)/1024 “used space in KB” from dba_segments”;
8. List the name and creation date of database users :
SQL>select username, created from dba_users;
9. Where is the existing Control file located and what is the name?
SQL> select * from v$controlfile; OR SQL> show parameter control
SQL> select name from v$controlfile;
10. What is the initial sizing of the datafile section in your control file?
SQL>select records_total from v$controlfile_record_section
where type = “DATAFILE”;
11. List the number and location of existing log files?
SQL> select member from v$logfile;
12. Display the number of redo log file groups and members your database has ?
SQL>select group#, members, status from v$log;
13. In which database mode is your database configured?
SQL> select log_mode from v$database;
14. Is archiving enabled?
SQL>select archiver from v$instance;
15. To view all the tablespaces name?
SQL>select tablespace_name from dba_tablespaces;
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