Broker reports ORA-16858: last communication time from redo source could not be determined

(Doc ID 2064384.1)

Last updated on APRIL 18, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 and later
Information in this document applies to any platform.

Symptoms

In a 12c configuration, Broker reports the errors:

ORA-16810: multiple errors or warnings detected for the database
ORA-16858: last communication time from redo source could not be determined

 

DGMGRL> show configuration

Configuration - cdb_t5

Protection Mode: MaxPerformance
Databases:
cdbph2 - Primary database
cdbphsb2 - Physical standby database
cdbphsb4 - Physical standby database
Error: ORA-16685: this database does not receive redo data

Fast-Start Failover: DISABLED

Configuration Status:
ERROR

 

DGMGRL> show database cdbphsb4

Database - cdbphsb4

Role: PHYSICAL STANDBY
Intended State: APPLY-ON
Transport Lag: (unknown)
Apply Lag: (unknown)
Apply Rate: (unknown)
Real Time Query: OFF
Instance(s):
cdbphsb4

Database Error(s):
ORA-16685: this database does not receive redo data

Database Warning(s):
ORA-16858: last communication time from redo source could not be determined

Cause

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