Secure Enterprise Search Crawler Failed With Error EQA-15021 and java.sql.SQLRecoverableException: IO Error: Unknown host specified

(Doc ID 2132972.1)

Last updated on SEPTEMBER 18, 2017

Applies to:

Oracle Secure Enterprise Search - Version 11.2.2.2.0 and later
PeopleSoft Enterprise PT PeopleTools - Version 8.53 and later
Information in this document applies to any platform.

Symptoms

On : Oracle Secure Enterprise Search (SES) 11.2.2.2.0 version, Installation and Configuration 

SES is installed against an existing database.  In this installation type, connections are made to the database using credentials stored in the application configuration.  These credentials are set up using Weblogic Scripting Language (WLST) as documented in step 7 in the Secure Enterprise Search Installation and Upgrade Guide:
Install Oracle Secure Enterprise Search Software Only (on an Existing Database and an Existing Middle Tier)
http://docs.oracle.com/cd/E35215_01/install.11222/e35069/toc.htm#CEGDHGBD


Testing the PeopleSoft (PSFT) Search Plugin - SES Round Trip Test Step 3 Crawl Failed with error

EQA-15021: The associated Oracle Enterprise Scheduler (ESS) request with ID 117 is no longer executing. The request ended in state ERROR with the following information: oracle.as.scheduler.ExecutionErrorException: Spawned job for request 117 produced the error exit code: ERROR
at oracle.as.scheduler.rp.AsyncFinalizeProcessor.processFinalizeRequest(AsyncFinalizeProcessor.java:131)
at oracle.as.scheduler.rp.SpawnedExecutableWrapper.finalizeExecution(SpawnedExecutableWrapper.java:382)
at oracle.as.scheduler.rp.EndpointProcessor.finalizeExecute(EndpointProcessor.java:1018)
at oracle.as.scheduler.rp.EndpointProcessor.finalizeExecuteWrapper(EndpointProcessor.java:980)
at oracle.as.scheduler.adapter.EndpointImpl.finalizeExecute(EndpointImpl.java:561)
at oracle.as.scheduler.ejb.EssAppEndpointBean.finalizeExecute(EssAppEndpointBean.java:162)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.bea.core.r...

ERRORS
-----------------------
EQA-15021


and in the SES crawler log (located in MIDDLEWARE_HOME/logs/crawler/crawler/):
[2016-04-13T20:21:10.710-05:00] [search] [ERROR] [] [oracle.search] [tid: Main Thread] [ecid: 0000LGIMs9j6eLO5yjs1yW1N3j23000001,0] [[
java.sql.SQLRecoverableException: IO Error: Unknown host specified
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:482)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:678)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:238)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:567)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at oracle.search.ESSCrawlerLauncher.getDBConnection(ESSCrawlerLauncher.java:414)
at oracle.search.ESSCrawlerLauncher.init(ESSCrawlerLauncher.java:337)
at oracle.search.ESSCrawlerLauncher.main(ESSCrawlerLauncher.java:936)
Caused by: oracle.net.ns.NetException: Unknown host specified
at oracle.net.resolver.HostnameNamingAdapter.resolve(HostnameNamingAdapter.java:193)
at oracle.net.resolver.NameResolver.resolveName(NameResolver.java:135)
at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:420)
at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:711)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:257)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1222)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:330)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:678)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:96)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:567)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at oracle.search.ESSCrawlerLauncher.getDBConnection(ESSCrawlerLauncher.java:414)
at oracle.search.ESSCrawlerLauncher.init(ESSCrawlerLauncher.java:337)
at oracle.search.ESSCrawlerLauncher.main(ESSCrawlerLauncher.java:937)

]]




STEPS
-----------------------
The issue can be reproduced at will with the following steps:
1. Testing the crawler plugin from PSFT to SES, it fails with the errors above

2. This error could also occur with other similar connection attempts from other application plugins - not only PSFT.


BUSINESS IMPACT
-----------------------
The issue has the following business impact:
Due to this issue, it is not possible to index the search database.  

Cause

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