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The Enterprise Manager for my Oracle 11.2 installation doesn't work anymore as described in How can I change the connection descriptor used by Oracle Enterprise Manager? and I tried to re-configure it using the instructions here. However, the deconfig command runs into a ClassNotFoundException:

C:\Users\bcalmac>emca -deconfig dbcontrol db -repos drop

STARTED EMCA at Jan 10, 2014 12:05:04 PM
EM Configuration Assistant, Version Production
Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Enter the following information:
Database SID: test9
Listener port number: 1521
Password for SYS user:
Password for SYS user: Exception in thread "main" java.lang.NoClassDefFoundError: HTTPClient/ProtocolNotSuppException
        at oracle.sysman.emd.targetIntg.agent.AgentTargetInstaller.<clinit>(
        at oracle.sysman.emcp.ParamsManager.getLocalHost(
        at oracle.sysman.emcp.ParamsManager.getHost(
        at oracle.sysman.emcp.DatabaseChecks.validateUserCredentials(
        at oracle.sysman.emcp.ParamsManager.validatePassword(
        at oracle.sysman.emcp.EMConfigAssistant.promptForData(
        at oracle.sysman.emcp.EMConfigAssistant.promptForParams(
        at oracle.sysman.emcp.EMConfigAssistant.displayWarnsAndPromptParams(
        at oracle.sysman.emcp.EMConfigAssistant.getDisplayAndPromptWarnsParms(
        at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(
        at oracle.sysman.emcp.EMConfigAssistant.statusMain(
        at oracle.sysman.emcp.EMConfigAssistant.main(

In what jar is this class, so I can copy it over from another Oracle installation?

share|improve this question
Copy /oui/jlib/http_client.jar to /user_projects/domains/GCDomain/lib/ –  user47010 Sep 8 '14 at 6:02
The target directory will be different on @BogdanCalmac's machine, not least because he's using Windows. –  Colin 't Hart Sep 8 '14 at 9:59

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