rdisp/delete_ddlog is a SAP Parameter attribute which is used to control Cyclic Refresh of Table DDLOG 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 .
rdisp/delete_ddlog profile paramerter attributes
Parameter Name: rdisp/delete_ddlog
Description: Cyclic Refresh of Table DDLOG
Default Value: on
Parameter Type ( See
IF_PARAMETER_TYPES)
: Boolean(BOOL)
Restriction Values:
Parameter Unit:
Parameter Group: Database
CSN Component: BC-DB-DBI
System-Wide parameter: No
Dynamic Parameter: No
Vector Parameter: No
Has Sub-Parameters: No
Check Function Exists: No
Parameter documentation
If buffer synchronization is activated (see parameter
rdisp/bufrefmode>) then changes are written
from buffered tables to table DDLOG. All <(><<)>n> seconds (
rdisp/bufreftime>) the local buffers are
updated to the latest state by reading the DDLOG table. Parameter
rdisp/delete_ddlog defines if the entries are automatically deleted
after the changes (rdisp/delete_ddlog = on) or not (rdisp/delete_ddlog =
off). In this latter situation the entries of table DDLOG have to be
deleted manually.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.