Well if you are going to rebuild all of them you can split the file into multiple files and run a few session simultaneously.
You could also use the PARALLEL clause to try and speed it up as well as an analyze statement to avoid having to run stats after the rebuild.
4) Taking an export of the owning schema or database, specifying ROWS=NO so that data within the database is not exported, and then using the import with the option INDEXFILE will produce a file listing all of the commands to build the indexes.
PS: You can use the "COMPUTE STATISTICS" option on the CREATE or ALTER INDEX commands.
"The person who says it cannot be done should not interrupt the person doing it." --Chinese Proverb