rdisp/max_slock_entries is a SAP Parameter attribute which is used to control Size of shared lock table information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
Parameter rdisp/max_slock_entries specifies the size of the SLOCK table.
This is needed for the Shared Lock statistic of the VM container (see
transaction SM53).
See SAP Parameter Documentation for full SAP documentation for this profile parameter.