The SAP BC (Basis Components) is the root of the SAP Applications ERP software.   It  provides the runtime environment for the rest of the R/3 Applications.  It ensures that applications are optimally integrated in the system environment.  The SAP Basis Components contains powerful tools such as CCMS (Computing Center Management System) for easy system administration. It is also provides the interfaces to the distribute system components and third-pary vendors (EDI, RFC etc.).

SAP Basis Links:
Menu / Jobs / Spools / User Defaults / Transports / Statistics

SAP Database Table Hints and Tips

Authorization
Authorization, Profiles, Address
Transaction RZ10 - EditProfiles
Users authorizations/profiles - for management reporting
Authorization to only display customizing (SPRO)

SAP Client Copy
Client Copy with only user master and roles
Client Copy from Production to Quality  Server
Client Copy By Using SCC8 and SCC7
Copy table contents

Locking
Lock Entries - (Mass Users Lock in 4.6x)
Users Last Login
Locked All the Users in One Client and Log-Off

Unix Command
Run UNIX script from SAP ABAP
Unix Network Printer
Unix Print Spooler
Unix command to start/stopSAP
Unix command to start saprouter
Unix SAP Internet Mail Gateway
Search for a file in Unix
Unix Oracle unlock/lock all users
Unix auto batch file

ABAP Basis Control
Limits the number of login sessions per user
Easy Mass Maintain of display, locking and deleting users

SAP Basis Forum at the convenient of your mail box
Exchange Basis problems/solutions, tips, ideas with other SAP BC peers from around the globe.
Note: An Auto Free Basis Tips Windows Help File will be send to you upon Joining.