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'An attempt to load rw.dll failed' / 'Engine rwEng-0 died with error: {1}' Errors When Trying To Start The Reports Server. (Doc ID 2888914.1)

Last updated on DECEMBER 13, 2024

Applies to:

Oracle Reports Developer - Version 11.1.2.0.0 and later
Oracle Clinical - Version 5.2.2 and later
Information in this document applies to any platform.

Symptoms

1)
OC 5.4.0 environment (running on FMW 12.2.1.4 / Windows OS): when trying to start the reports server then it appears to start successfully i.e.
 

C:\Oracle\Middleware\Oracle_Home\user_projects\domains\FRDomain\bin>startComponent.cmd repXXX

Starting server repXXX ...
Successfully started server repXXX ...
Successfully disconnected from Node Manager.


Exiting WebLogic Scripting Tool.

Done




2)
However the Reports Server is not successfully started and the below errors are seen in the reports log files (located in the 'C:\Oracle\Middleware\Oracle_Home\user_projects\domains\FRDomain\servers\repXX\logs' folder):
 

----------------------------
rwserver_diagnostic.log
----------------------------
[2022-08-08T05:14:04.866-07:00] [reports] [NOTIFICATION] [REP-56105] [oracle.reports.server] [tid: 22] [ecid: xx] EngineManager:manage  Engine rwEng-0 died with error: {1}.
[2022-08-08T05:14:08.038-07:00] [reports] [NOTIFICATION] [REP-56105] [oracle.reports.server] [tid: 22] [ecid: xx] EngineManager:manage  Engine rwEng-0 died with error: {1}.
[2022-08-08T05:14:11.213-07:00] [reports] [NOTIFICATION] [REP-56105] [oracle.reports.server] [tid: 22] [ecid: xx] EngineManager:manage  Engine rwEng-0 died with error: {1}.
[2022-08-08T05:14:11.213-07:00] [reports] [INCIDENT_ERROR] [REP-56105] [oracle.reports.server] [tid: 22] [ecid: xx] REP-56105 : Engine rwEng-0 died with error: .  [[
oracle.reports.RWException: IDL:oracle/reports/RWException:1.0
    at oracle.reports.utility.Utility.newRWException(Utility.java:1016)
    at oracle.reports.server.EngineManager.manage(EngineManager.java:422)
    at oracle.reports.server.IdleThread.run(IdleThread.java:84)




---------------------------
rwEng-0_diagnostic.log
---------------------------
[2022-08-08T05:14:04.132-07:00] [reports] [ERROR] [REP-55006] [oracle.reports.engine] [tid: 1] [ecid: xx] [EngineName: rwEng-0] EngineImpl:loadLibrary  An attempt to load rw.dll failed.
[2022-08-08T05:14:04.304-07:00] [reports] [NOTIFICATION] [] [oracle.reports.engine] [tid: 1] [ecid: xx] [EngineName: rwEng-0] EngineImpl:loadLibrary  An attempt to load rw.dll failed.
[2022-08-08T05:14:07.280-07:00] [reports] [ERROR] [REP-55006] [oracle.reports.engine] [tid: 1] [ecid: xx] [EngineName: rwEng-0] EngineImpl:loadLibrary  An attempt to load rw.dll failed.
[2022-08-08T05:14:07.461-07:00] [reports] [NOTIFICATION] [] [oracle.reports.engine] [tid: 1] [ecid: xx] [EngineName: rwEng-0] EngineImpl:loadLibrary  An attempt to load rw.dll failed.
[2022-08-08T05:14:10.416-07:00] [reports] [ERROR] [REP-55006] [oracle.reports.engine] [tid: 1] [ecid: xx] [EngineName: rwEng-0] EngineImpl:loadLibrary  An attempt to load rw.dll failed.
[2022-08-08T05:14:10.650-07:00] [reports] [NOTIFICATION] [] [oracle.reports.engine] [tid: 1] [ecid: xx] [EngineName: rwEng-0] EngineImpl:loadLibrary  An attempt to load rw.dll failed.



--------------------------
zrclient_diagnostic.log
-------------------------
[2022-08-08T05:09:32.074-07:00] [reports] [INCIDENT_ERROR] [REP-51002] [oracle.reports.zrclient] [tid: 1] [ecid: xx] REP-51002 : Bind to Reports Server repXX failed.  [[
oracle.reports.RWException: IDL:oracle/reports/RWException:1.0
    at oracle.reports.utility.Utility.newRWException(Utility.java:1016)
    at oracle.reports.client.ServerManager.getServer(ServerManager.java:284)
    at oracle.reports.zrcclient.ZRCClient.zrcco_Connect(ZRCClient.java:175)

 

3)
FYI: The following was also checked/done as part of the investigation:

i.
Below were confirmed to be installed on the Windows 2012 R2/ FMW 12.2.1.4 Application Server:


ii.
Doing the following made no difference:


iii.
Debug output (after enabling debug using the following MOS document: How to Enable Reports Engine/Server/Servlet/Zrclient Trace in Reports 12c (Doc ID 2070743.1)) did not yield any further information on the underlying cause.


iv.
Multi-casting was checked on the FMW 12.2.1.4 Application Server and confirmed to be working:


multicast-test.cmd -local 100.xx.xxx.3 -group 228.5.6.7:14021

and output is:

Starting test on ip=/100.xx.xxx.3, group=/228.5.6.7:14021, ttl=4
Configuring multicast socket...
Starting listener...
Wed Aug 10 04:51:57 PDT 2022: Sent packet 1 containing 8952 bytes.
Wed Aug 10 04:51:57 PDT 2022: Received test packet 1 from self (sent 32ms ago).
Wed Aug 10 04:51:59 PDT 2022: Sent packet 2 containing 8952 bytes.
Wed Aug 10 04:51:59 PDT 2022: Received test packet 2 from self
Wed Aug 10 04:52:01 PDT 2022: Sent packet 3 containing 8952 bytes.
etc

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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