Connections to NOMOUNT/MOUNTED or RESTRICTED Databases Fail
(Doc ID 362656.1)
Last updated on FEBRUARY 19, 2020
Applies to:Oracle Net Services - Version 188.8.131.52 to 184.108.40.206 [Release 11.1 to 12.2]
Information in this document applies to any platform.
Connecting to the database via the TNS Listener fails with ORA-1033 or ORA-12528 or ORA-12526 or ORA-12527.
Following are two examples:
The database was started using the nomount, mount but restricted mode.
In other words, the DB admin executed "STARTUP NOMOUNT" or "STARTUP MOUNT" with "STARTUP RESTRICT" to an idle instance.
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