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Nbu backup Oracle 10g rac Error 6

Source: Internet
Author: User
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One customer consulted on nbu6.5 and failed to back up Oracle10g. The error code is 6. After checking the oracle log, It is shown as follows:

RMAN-12001: cocould not open channel ch01
RMAN-10008: cocould not create channel context
RMAN-10003: unable to connect to target database
ORA-12170: TNS: Connect timeout occurred;

After checking the status of the listener, it is found that the status is started, but the listener instance is not displayed. We recommend that you restart the listener. If this problem can be solved, update it again.

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