Online Documentation for SQL Manager for DB2
Tools
Show only connected databases in drop-down menu
If this option is checked, only connected databases are displayed in drop-down menus of such tools as Query Builder, SQL Script, etc.
Allow using parameters in query text
This feature allows you to specify different values within a query in a popup dialog just before the query execution. Use the colon (':') character before an identifier (e.g. :P1) to specify a parameter within the query.
Asynchronous data opening
Check this option to allow getting object data in background mode (asynchronously).
Asynchronous query execution
Check this option to allow executing queries in background mode (asynchronously).
New object editor should be opened for
Use this group to specify the database to open new editors for:
Database currently selected in DB Explorer;
Database selected in currently focused editor.