Search notes:

Oracle: V$VERSION

select
   banner      -- 'Oracle%' or 'Personal Oracle%' or 'Oracle %Perf%' or …
   banner_full,
   regexp_replace(banner_full, '.*\n(.*)', '\1') banner_full_2nd_line,
   banner_legacy,
   con_id
from
   v$version;

See also

The view PRODUCT_COMPONENT_VERSION selects from v$version.
dbms_utility.db_version
$ORACLE_HOME/bin/oraversion
Oracle Dynamic Performance Views
Determine database versions

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/developm...', 1758206135, '216.73.216.150', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/development/databases/Oracle/installed/dynamic-performance-views/version/index(54): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78