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Multicast Working Intermittent (Doc ID 780845.1)

Last updated on MAY 23, 2022

Applies to:

Oracle Reports Developer - Version 10.1.2.0.2 and later
Information 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>


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

 

 

 

Cause

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In this Document
Symptoms
Cause
Solution

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