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oracle.sysman.emcp.exception.DatabaseUnavailableException: Database instance unavailable. at oracle.sysman.emcp.DatabaseChecks.throwDBUnavailableException(DatabaseChecks.java:151) at oracle.sysman.emcp.DatabaseChecks.checkDbAvailabilityImpl(DatabaseChecks.java:144) at oracle.sysman.emcp.DatabaseChecks.checkDbAvailability(DatabaseChecks.java:163) at oracle.sysman.emcp.DatabaseChecks.getDbServiceName(DatabaseChecks.java:582) at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAssistant.java:1272) at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:574) at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:522)