dbs/db4/alter_table_timeout_retry is a SAP Parameter attribute which is used to control Number of attempts to access locked tables/records during an ALTER TAB 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 .
Number of attempts to execute an ALTER TABLE statement again, if a lock
situation occurred during its execution (SQL0913).
Note that this means that the total wait time in the case of failure is
(<(><<)>n>+1) * WAITFILE seconds, where WAITFILE is the table attribute
of the same name, which can be viewed with the command DSPFD.
If you set the value -1, the value of
See SAP Parameter Documentation for full SAP documentation for this profile parameter.