Database LOCKS

[Former Member]

Hi All,

Hope all are doing fine

Could you pls. let me know the difference between

1.Exclusive,Cummulative lock and 2.Exclusive,not cummulative lock and 3. Shared locks

Thanks & Regards

Jack

[sivasatyaprasad_yerra]

Check this link:

[http://help.sap.com/erp2005_ehp_04/helpdata/EN/c4/812640632cec01e10000000a155106/frameset.htm|http://help.sap.com/erp2005_ehp_04/helpdata/EN/c4/812640632cec01e10000000a155106/frameset.htm]

Regards,

Siva.

[former_member188827]

Exclusive lock

The locked data can be read or processed by one user only. A request for another exclusive lock or for a shared lock is rejected.

Shared lock

Several users can read the same data at the same time, but as soon as a user edits the data, a second user can no longer access this data. Requests for further shared locks are accepted, even if they are issued by different users, but exclusive locks are rejected.

Exclusive but not cumulative lock

Exclusive locks can be requested by the same transaction more than once and handled successively, but an exclusive but not cumulative lock can only be requested once by a given transaction. All other lock requests are rejected.

[Former Member]

Hi,

Search the SCN and Google..you can find the answer for your question.

[Former Member]

Thanks