Frequently used Tcodes in SAP

Serial No	Transaction Code	Function
1	ABAPDOCU	Example Library
2	ABAPHELP	Keyword Documentation
3	AL03	Operating system Alert Monitor
4	AL05	Workload Alert Monitor
5	AL08	List of all Users Logged ON (about all Instances/Servers of the System)
6	DB01	Exclusive waits in Oracle database
7	DB02	Database performance ; tables and index
8	DB03	Parameter changes in database
9	DB05	Analysis of table with respect to indexed fields
10	DB12	Backup logs
11	DB13	DBA planning calendar
12	PFCG	Role Maintenance
13	RZ06	Maintain alert threshold
14	RZ08	CCMS Alert Monitor
15	RZ10	Maintain system profiles
16	RZ20	Alert Monitor 4.0
17	RZ21	Maintain settings for Alert Monitor 4.0
18	RZ11	Profile Parameter Maintenance
19	SA38	ABAP Reporting
20	SCAM	CATT Management
21	SCAT	Computer Aided Test Tool
22	SCC1	Client copy transport
23	SCC3	Client copy log
24	SCC4	Client copy administration
25	SCC5	Delete Clients
26	SCC6	Client import
27	SCC7	Client import--- post processing
28	SCC8	Client export
29	SCC9	Remote client copy
30	SCCL	Local client copy
31	SCDO	Change Document Object
32	SCMP	Table comparison
33	SCU3	Table History
34	SCI	Code Inspector
35	SE01	Transport Organizer(Extended View)
36	SE06	Set up workbench organizer
37	SE09	Transport organizer
38	SE10	Customizing  organizer
39	SE11	Data dictionary maintenance`
40	SE12	Data dictionary display
41	SE15	Repository Info System
42	SE16	Display table content
43	SE17	General table display
44	SE37	ABAP Function Modules
45	SE38	ABAP Editor
46	SE41	Menu Painter
47	SE51	Screen Painter
48	SE71	Form Painter
49	SE80	Object Navigator
50	SE93	Maintain Transaction
51	SFT2	Maintain public holiday calendar
52	SFT3	Maintain factory calendar
53	SHDB	Transaction Recorder
54	SICK	Installation check
55	SLIN	Extended Check
56	SM01	Lock Transactions
57	SM04	Overview of users
58	SM13	Update terminates
59	SM21	System Log
60	SM30	Maintain tables(not all tables can use SM30)
61	SM31	Maintain tables
62	SM35	Batch Input Monitoring
63	SM37	Overview of background jobs
64	SM39	Job analysis
65	SM49	External operating system commands, execute
66	SM50	Work process overview
67	SM51	Instance overview
68	SM58	Error log for asynchronous RFC
69	SM59	RFC connection, maintain
70	SM63	Operations mode, maintain
71	SM66	Global work process overview
72	SM69	External operating system commands, maintain
73	SP00	Spool
74	SP01	Spool control
75	SP02	Display output requests
76	SP11	TemSe(temporary sequential objects) contents
77	SP12	TemSe administration
78	SPAD	Spool administration (printer setup)
79	SPAM	SAP Patch Manager
80	SPAU	Intersection SAP Transport/customer modifications
81	SPIC	Spool; installation check
82	ST01	SAP system trace
83	ST06	Operating system monitor
84	ST07	Application Monitor
85	ST09	Table call statistics
86	ST11	Display developer trace
87	ST12	Application monitor
88	ST22	Dump Analysis
89	STAT	Local Transaction statistics
90	STUN	Performance monitoring
91	SU01	User maintenance
92	SU02	Maintain authorization profiles
93	SU03	Maintain authorizations
94	SU10	Maintain change to user records
95	SU12	Delete all users
96	SU2	Maintain user parameters
97	SU53	Display authorization checked values
98	SM12	To unlock the locked entries
99	SAAB	Checkpoints that Can Be Activated
100	SALE	ALE customizing transaction
101	CG3Y	Transfer file from application server to front end.
102	CG3Z	transfer file from front end to application server
103	NACE	conditions of output control (to create a link between forms and driver programs)
104	ST05	SQL tracer (for performance tunning)
105	SE30	ABAP runtime analysis(Performance tuning)
106	SE61	SAP Documentation
107	SE62	Industry Utilities
108	SE63	Translation: Initial Screen ( to Translate Short / Long Text )
109	SE64	Terminology
110	SE72	SAPscript Styles
111	SE73	SAPscript Font Maintenance
112	SE74	SAPscript format conversion
113	SE75	SAPscript Settings
114	SE76	SAPscript: Form Translation
115	SE77	SAPscript Styles Translation
116	smartforms	Smartforms
117	Wedi	IDOC and EDI basis
118	we31	Segment creation
119	we30	Idoc Type creation
120	we81	Creation and assigning of Message type