dbs/db4/auto_dsql_schema is a SAP Parameter attribute which is used to control Auto-qualification for objects in native SQL statements 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 .
If dbs/db4/auto_dsql_schema is set to 'false', IBM i system naming is
used to locate database objects in a native SQL statement (ADBC, EXEC
If dbs/db4/auto_dsql_schema is set to 'true', the following class of SQL
statements will be handled differently:
DML (INSERT, UPDATE, DELETE),
DDL (CREATE [OR REPLACE], DROP, ALTER)
For the above statement types, database objects will be recognized and
auto-qualified with the schema name of the current database connection,
simulating SQL naming.
For more information, see SAP Note 1509678.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.