Search notes:

SQL Developer: Tools -> Preferences -> Database -> Advanced

Settings that can be configured under Tools -> Preferences -> Database -> Advanced include:

SQL Array Fetch Size (50 … 200)
How null values are displayed (text and/or background color)
How struct and XML values are displayed in the grid
If autocommit should be made
Location of the Kerberos config file (krb5.conf)
Location for kerberos credential cache files
If or not the Oracle client should be used
If or not the OCI/thick driver should be used
Location of the tnsnames directory

See also

Kerberos related settings in SystemV.W.X.Y.Z/o.sqldeveloper/product-preferences.xml.

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