Problem with type of a field _aclitem in PostgreSQL

[apostol]

In advance I apologize for my English:)
I try to execute inquiry of a kind

Code: Select all

Select datname,datdba,datacl from pg_database;

Performance of inquiry leads to a mistake: Cannot access blob record in column 3 with type string.
How much I have understood a problem is covered in type of a field _aclitem.

IDE: BCB5; DB: PostgreSQL 8.1.5; Components ZEOSLIB_TESTING_REV261

Help to solve this problem.