Lock Mechanism

[Former Member]

Hi Friends,

1.What r the types of Lock available?

can any one explain in brief? please..

2.What is Enque and Deque...?

Thanks,

Regards,

Sathish Kumar.N

[Former Member]

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[Former Member]

1.Read Lock(Shared Locked)--protects read access to an object. The read lock allows other transactions read access but not write access to

the locked area of the table

Write Lock(exclusive lock)

Enhanced write lock (exclusive lock without cumulating)

2. Enque is locking,Deque is unlocking,

check this link for example.

http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm

[Former Member]

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