How many single role we can attach to single user?

Dear Friends,
How many single role we can attach to single user?
Sachin

Hi Sachin,
The below parameter can be checked for this topic. Infact the limit is about 9000 for this parameter and typically i have seen ID's in 4.7 environment with around 150 roles or more...
<b>Auth/auth_number_in_userbuffer</b>
When a user logs onto SAP, the authorizations contained in the user’s profiles are copied to a user buffer in memory.  The maximum number of authorizations copied is set by this parameter.  The size of the buffer must always exceed the maximum number of authorizations as authorization checks are made only against those in the buffer.
Refer to OSS notes 84209 and 75908 for more detailed information regarding changes to the size of the user buffer.
Transaction SU56 shows the contents of the user’s user buffer and a total for all the authorizations in a user master record.
Hope this info helps
Br,
Sri
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