REP-501: Unable to connect to the specified database in Report Server

Question

I Get a 'REP-501: Unable to connect to the specified database' error, when trying to call a report from a button on a Forms 10g application, through a report object:
A portion of the code button:
report_id := find_report_object('REPORT');
set_report_object_property(report_id, report_destype, cache);
set_report_object_property(report_id, report_desformat, 'PDF');
set_report_object_property(report_id, report_server, p_server);
set_report_object_property(report_id, report_filename, 'report.rep');
report_job_id := run_report_object(report_id, lista_p);
rep_status := report_object_status(report_job_id);
job_number := length(servidor_rep) + 2;
WHILE rep_status IN ('RUNNING', 'OPENING_REPORT', 'ENQUEUED') LOOP
rep_status := report_object_status(report_job_id);
END LOOP;
IF rep_status = 'FINISHED' THEN
web.show_document('http://'||server_name||'/reports/rwservlet/getjobid' ||
substr(report_job_id, job_number) || '?server=' || p_server,'_blank');
ELSE
message('Error');
END IF;
The TSNMAMES configured in the OAS is as follows,
LISTENERS_PROD =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = zurquivip.coope.local)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = poasvip.coope.local)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = irazuvip.coope.local)(PORT = 1521))
DB01 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = zurquivip.coope.local)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = poasvip.coope.local)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = irazuvip.coope.local)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = DB01.COOPE.LOCAL)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 180)
(DELAY = 5)
This application does not fail in other databases, only in which I have the problem.
The connection to the database through the SQLPLUS and other applications works well. The error is presented only when calling reports from the application.
Another point is that the problem is presented with some users and not with others even they have the same conditions as roles, profiles, grant objects, etc.
If i run my report with the following url applying directly on address bar of web browser then it run fine on web browser
http://hostname.domain:port/reports/rwservlet?report=myreport.jsp&userid=un/pw@db&destype=cache&desformat=PDF
OAS 10g and Database are on different machines.
Please... any idea about this problem?
Thanks!!

Answer 1

I use a report object, imagine that sends connect information when creating the Job in the reports server.
However the same problem happens if I call to report from the Internet Explorer with all parameters of connectivity, for example;
http://hostname.domain:port/reports/rwservlet?report=myreport.rep&userid=un/pwdb@&destype=cache&desformat=PDF
The only difference in this database is that it is configured in a RAC and as I mentioned the problem occurs with some users and not with others, even if they are identical.
Thank for your help!