You must use the same password authentication algorithm on all systems sharing the database. For example, if you use the Data Encryption Standard (DES) algorithm, you must use it on all systems sharing the database. The DES algorithm is the default password authentication algorithm. For more information on password authentication, see Password authentication options.

All sharing systems must use the same data set names. Ensure that the data set name table (ICHRDSNT) on each system uses the same data set names.

If you have split your database, the database range table (ICHRRNG) must be the same on all systems.

All sharing systems must have compatible class descriptor tables (ICHRRCDE).