Multicast Working Intermittent
(Doc ID 780845.1)
Last updated on AUGUST 28, 2023
Applies to:
Oracle Reports Developer - Version 10.1.2.0.2 and laterInformation in this document applies to any platform.
Symptoms
Running reports from Oracle Forms using RUN_REPORT_OBJECT and WEB.SHOW_DOCUMENT built-in on High Availability environment are failing intermittent with the following error:
Rep-51002 Bind To Reports Server <Servername>
** Both mid-tier servers are on the same subnet
rwdiag.sh on one mid-tier sometimes display Reports Server from the other mid-tier.
<server1> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server1: Type = server : Host = <hostname_server1>
<server2> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server2: Type = server : Host = <hostname_server2>
2 Minutes later
<server1> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server1: Type = server : Host = <hostname_server1>
(2) Name = rep_forms_server2: Type = server : Host = <hostname_server2>
<server2> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server1: Type = server : Host = <hostname_server1>
(2) Name = rep_forms_server2: Type = server : Host = <hostname_server2>
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server1: Type = server : Host = <hostname_server1>
<server2> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server2: Type = server : Host = <hostname_server2>
2 Minutes later
<server1> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server1: Type = server : Host = <hostname_server1>
(2) Name = rep_forms_server2: Type = server : Host = <hostname_server2>
<server2> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14005
(1) Name = rep_forms_server1: Type = server : Host = <hostname_server1>
(2) Name = rep_forms_server2: Type = server : Host = <hostname_server2>
Another scenario could be a non HA environment where Reports Server is being detected some times by rwdiag.sh.
Example
>rwdiag.sh -find <reports server name>
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14022
'<reports server name>' found in the network
Time taken - 23 milliseconds
Name = <reports server name> : Type = server : Host = <hostname>
2 minutes later:
> rwdiag.sh -find <reports server name>
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14022
REP-50504 '<reports server name>' not found in the network
or
> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14022
REP-50503 No server found in the network
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14022
'<reports server name>' found in the network
Time taken - 23 milliseconds
Name = <reports server name> : Type = server : Host = <hostname>
2 minutes later:
> rwdiag.sh -find <reports server name>
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14022
REP-50504 '<reports server name>' not found in the network
or
> rwdiag.sh -findAll
Broadcast mechanism used to locate servers
------------------------------------------
Channel address = 228.5.6.7
Channel port = 14022
REP-50503 No server found in the network
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |