1. SQL*Net & Other Waits

2. #.2 Copyright 2006 Kyle Hailey SQL*Net Waits Session Shadow Log Buffer Buffer Cache Log Buffer Buffer Cache SGA Library Cache Host Machine SQL*PlusOCISQL*Formsetc

3. #.3 Copyright 2006 Kyle Hailey SQL*Net Waits REDO Log Files Data Files DBWR LGWR User2 User1 User3 Log Buffer Buffer Cache Log Buffer Buffer Cache SGA Library Cache

4. #.4 Copyright 2006 Kyle Hailey SQL*Net more data from client  # 6 Top Wait  Client sends information that spans packets  Shadow recieves first packet  Responds  Waits for more data from client Session Shadow Waiting

5. #.5 Copyright 2006 Kyle Hailey SQL*Net more data to client  Shadow is sending data to client that spans packets  Sends first packet then waits for shadow to respond, so it can send more Session Shadow Waiting

6. #.6 Copyright 2006 Kyle Hailey SQL*Net more data from dblink  #21 Session Shadow Waiting dblink Shadow

7. #.7 Copyright 2006 Kyle Hailey SQL*Net break/reset to client  #14  Error in sql statement  Control C  Usually highlights and error in application Session Shadow Waiting Error

8. #.8 Copyright 2006 Kyle Hailey SQL*Net break/reset to dblink  #32  Error in sql statement  Control C  Usually highlights and error in application Session Shadow Waiting dblink Shadow error

9. #.9 Copyright 2006 Kyle Hailey UNDO/RBS WAITS

10. #.10 Copyright 2006 Kyle Hailey Wait for a undo record  #34  First in 9i

11. #.11 Copyright 2006 Kyle Hailey undo segment extension  #36  Waiting for a RBS to extend  RBS too small ?

12. #.12 Copyright 2006 Kyle Hailey undo segment tx slot  #37  Waiting for the RBS Header TX slot  Not enough RBS?

13. #.13 Copyright 2006 Kyle Hailey Other Waits

14. #.14 Copyright 2006 Kyle Hailey sort segment request  #26  SMON allocates sort space in Temp Tablespace  If SMON is busy this can cause waits for sort space  SMON may be stuck rolling back

15. #.15 Copyright 2006 Kyle Hailey io done  #15 IO slave processes (oracleIXXX) Non-Idle: Wait for a I/O completion Idle : Waiting for work

16. #.16 Copyright 2006 Kyle Hailey unread message  #28  8.1.6 & 8.1.7 only

17. #.17 Copyright 2006 Kyle Hailey process startup  #27

18. #.18 Copyright 2006 Kyle Hailey pipe put  #30

19. #.19 Copyright 2006 Kyle Hailey summary  sort segment request : SMON occupied?