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ORA-12528: TNS:listener: all appropriate instances are blocking new connections

edited Sep 24, 2020 12:06PM in Database Administration (MOSC) 5 commentsAnswered

Oracle 18c EE on Oracle Linux 6

I've seen a lot of discussions on this error but never paid much attention because I'd never faced it, until now.

oracle:rmcatdev$ rman target sys/Mypwd@rmcatprd auxiliary sys/Mypwd@rmcatdev Recovery Manager: Release 18.0.0.0.0 - Production on Thu Sep 24 09:51:59 2020Version 18.8.0.0.0 Copyright (c) 1982, 2018, Oracle and/or its affiliates.  All rights reserved. connected to target database: RMCATPRD (DBID=641319665)RMAN-00571: ===========================================================RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============RMAN-00571: ===========================================================RMAN-00554: initialization of internal recovery manager package failedRMAN-04006: error from auxiliary database: ORA-12528: TNS:listener: all appropriate instances are blocking new connections

So far, everything I've read on it focuses on having static registration with the listener, but we have that:

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