Oracle架构用户无法在过程中创建表

我正在尝试在过程中创建临时表:

PROCEDURE pr_create_tmp_bp_table(fp_id NUMBER) IS
    tbl_name CONSTANT VARCHAR2(20) := 'BP_TO_DELETE';
BEGIN
    -- sanity checks removed for readablity

    EXECUTE IMMEDIATE 
        'CREATE GLOBAL TEMPORARY TABLE ' || tbl_name || ' ' ||
        'ON COMMIT PRESERVE ROWS AS ' ||
        'SELECT * FROM infop_stammdaten.bp';

END;

如果我复制 BEGIN.._END 阻止SQL工作表,一切正常。因此,我认为用户有权创建临时表。如果我从相同的SQL工作表执行该过程

Fehlerbericht -
ORA-01031: Nicht ausreichende Berechtigungen
ORA-06512: in "INFOP_STAMMDATEN.PA_DELETE_FP", Zeile 16
ORA-06512: in Zeile 6
01031. 00000 -  "insufficient privileges"
*Cause:    An attempt was made to perform a database operation without
           the necessary privileges.
*Action:   Ask your database administrator or designated security
           administrator to grant you the necessary privileges

第16行(Zeile 16)指向创建临时表的立即执行语句。

在我看来,用户在sql工作表中没有相同的权限,当它执行一个过程时,该过程也在它自己的模式中。