Rebuild all indexes in your SQL Server by db names

DECLARE @Database VARCHAR(255)
DECLARE @Table VARCHAR(255)
DECLARE @cmd NVARCHAR(500)
DECLARE @fillfactor INT

SET @fillfactor = 90

DECLARE DatabaseCursor CURSOR FOR
SELECT name FROM master.dbo.sysdatabases
WHERE name IN (‘   ‘)  — [ WRITE HERE YOUR DB NAMES,… ]
ORDER BY 1

OPEN DatabaseCursor

FETCH NEXT FROM DatabaseCursor INTO @Database
WHILE @@FETCH_STATUS = 0
BEGIN

SET @cmd = ‘DECLARE TableCursor CURSOR FOR SELECT table_catalog + ”.” + table_schema + ”.” + table_name as tableName
FROM ‘ + @Database + ‘.INFORMATION_SCHEMA.TABLES WHERE table_type = ”BASE TABLE”’

— create table cursor
EXEC (@cmd)
OPEN TableCursor

FETCH NEXT FROM TableCursor INTO @Table
WHILE @@FETCH_STATUS = 0
BEGIN

SET @cmd = ‘ALTER INDEX ALL ON ‘ + @Table + ‘ REBUILD WITH (FILLFACTOR = ‘ + CONVERT(VARCHAR(3),@fillfactor) + ‘)’
EXEC (@cmd)
FETCH NEXT FROM TableCursor INTO @Table
END

CLOSE TableCursor
DEALLOCATE TableCursor

FETCH NEXT FROM DatabaseCursor INTO @Database
END
CLOSE DatabaseCursor
DEALLOCATE DatabaseCursor