Add this to your bin\sqldeveloper.conf file
-How to disable loading "Welcome page" at startup?
-Scroll to the bottom of the page, you will find there a tickbox "Show on Startup"
sec - https://community.oracle.com/tech/developers/discussion/4175086/disable-loading-welcome-page-at-startup
Top 10 Preferences to Tweak when using Oracle SQL Developer
https://www.thatjeffsmith.com/archive/2011/12/top-10-preferences-to-tweak-when-using-sql-developer/ (mirror)
JavaScript:
//src - https://community.oracle.com/tech/developers/discussion/4479330/sql-developer-20-2-indexpreferencestask-very-slow
# turn off extended preference indexing entirely
AddVMOption -DIndexedPreferencesCommand=false-How to disable loading "Welcome page" at startup?
-Scroll to the bottom of the page, you will find there a tickbox "Show on Startup"
sec - https://community.oracle.com/tech/developers/discussion/4175086/disable-loading-welcome-page-at-startup
Top 10 Preferences to Tweak when using Oracle SQL Developer
https://www.thatjeffsmith.com/archive/2011/12/top-10-preferences-to-tweak-when-using-sql-developer/ (mirror)