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Oracle Enterprise Manager 12c – Host Discovery failed with “error while loading shared libraries: libsvn_client-1.so.0”

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When i tried to make a host discovery (using nmap) i saw an error: /u01/agent12c/agent_inst/discovery/nmap/bin/nmap: error while loading shared libraries: libsvn_client-1.so.0: cannot open shared object file: No such file or directory

Oracle Enterprise Manager 12c – I can’t login with correct password? Error – Authentication failed. If problem persist, contact your system administrator.

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You know your password and password is correct, but you still see authentication error? Error – Authentication failed. If problem persist, contact your system administrator. Where is the reason of this problem?

Oracle Enterprise Manager 12c – Clean-up agents (cleanup after agent upgrade)

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After agent upgrade… what next step we can made? We can clear our system and remove old installations…

Oracle Enterprise Manager 12c – Offline upgrade

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How to upgrade oem12c when your site due to security reason don’t have access to internet? Use offline upgrade mode!

OEM12c Get dynamic property error, Computation of a critical dynamic property failed. Retries Completed.

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Another error spotted: Get dynamic property error, Computation of a critical dynamic property failed. Retries Completed. How to solve?

OEM12C Agent is down – ERROR – Critical error: java.lang.OutOfMemoryError: Java heap space

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Another error spotted… Agent is going down after a few minutes / hours. 2014-04-22 14:56:50,337 [40:54F9BB47:GCThread-11] INFO – uncaughtException handler with java.lang.OutOfMemoryError: Java heap space

OEM12C AGENT UPGRADE: [peer not authenticated] + COLLECTIONS_HALTED + Too many open files + Upload timed out before completion

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Another error spotted during update agents to new version…

… and inside logs: java.lang.Throwable: java.security.PrivilegedActionException: oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://SERVER_NAME:3873/emd/main/. [peer not authenticated]java.lang.Throwable: java.security.PrivilegedActionException: oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://SERVER_NAME:3873/emd/main/. [peer not authenticated] … later agent thrown: Collection Status : [COLLECTIONS_HALTED( UPLOAD_SYSTEM Threshold (UploadMaxNumberXML: 5000) exceeded with […]

UPGRADE OEM12C AGENT FAILED AT “Preparing for Management Agent Upgrade” WITH “Exit Code :1”

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When i updated OMS, i tried to upgrade all agents. One of them during upgrade process failed with “Preparing for Management Agent Upgrade” step. But what is a reason of this behaviour?

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