topic Re: Database LOCKS in Application Development and Automation Discussions

Database LOCKS

Former Member — Wed, 13 May 2009 07:51:04 GMT

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

Re: Database LOCKS

sivasatyaprasad_yerra — Wed, 13 May 2009 08:04:01 GMT

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.

Re: Database LOCKS

former_member188827 — Wed, 13 May 2009 08:15:05 GMT

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.

Re: Database LOCKS

Former Member — Wed, 13 May 2009 08:17:12 GMT

Hi,

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

Re: Database LOCKS

Former Member — Mon, 03 Aug 2009 14:23:45 GMT

Thanks