Search notes:

Oracle wait event: rdbms ipc message

rdbms ipc message is a wait event that occurs in background processes. 
select
   prc.pname,
   prc.background,
   to_char( ses.wait_time_micro       / 1000 / 1000, '999990.999') wait_time_s,
   to_char( ses.time_remaining_micro  / 1000 / 1000, '999990.999') time_remaining_s,
   to_char((ses.wait_time_micro        +
            ses.time_remaining_micro) / 1000 / 1000, '999990.999') time_sum_s,
   ses.p1text,
   ses.p1,
   ses.schemaname,
   ses.osuser
from
   v$session ses                                join
   v$process prc on ses.paddr = prc.addr
where
   ses.event = 'rdbms ipc message'
order by
   ses.wait_time_micro desc

See also

rdbms ipc reply

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...', 1759422862, '216.73.216.42', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/development/databases/Oracle/installed/dynamic-performance-views/event_name/list/rdbms-ipc/message(56): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78