Win7 stuck on welcome screen

1) Reboot, press F8, choose safe mode
2) If started -> cmd, msconfig, Check Selective startup, uncheck Load startup items, go to tab Services - > check Hide all Microsoft services, Disable All
3) Reboot normally, set needed services again with msconfig

Win: not typing 1st quotation mark

Issue is in keyboard United States-International
Solution:
change keyboard layout

rac: patch - rolling ?

opatch query <patch dir> | grep rolling

--example output
 Patch is a rolling patch: true

general: how to create service in none-RAC database

-service_names init parameter (implicitly)
-DBMS_SERVICE

rac: shutdown all instances immediate

--

-- Check shutdown option for each instance (default - immediate)

--

oracle@rac1:~> crs_stat -p ora.rac.rac1.inst | grep -i stop_mode
USR_ORA_STOP_MODE=immediate
--

-- Stop immediate (if USR_ORA_STOP_MODE<>immediate)

-- 

srvctl stop database -d <db_name> -o immediate

rac: where is ocr backup

ocrconfig -showbackup

General: real undo retention

V$UNDOSTAT

TUNED_UNDORETENTION