Answer / guest

Cause: During ALTER DATABASE MOUNT, an attempt is being made
to mount a database on an instance in which a database is or
has previously been mounted.

Action: If you wish to mount the database, shutdown the
instance and then startup the instance and retry the operation.

Please add more information about this Error

ORA-12558: TNS:protocol adapter not loaded

1 Answers  

---

ORA-01571: redo version string incompatible with ORACLE version string

1 Answers  

---

LFI-00101: Write failed, file cannot be written to.

1 Answers  

---

ORA-23379: connection qualifier "string" is too long

1 Answers  

---

SQL-02134: Invalid runtime context

1 Answers  

---

ORA-23409: could not find an unused refresh group number

1 Answers  

---

ORA-21700: object does not exist or is marked for delete

1 Answers  

---

ORA-02330: datatype specification not allowed

1 Answers  

---

ORA-06524: Unsupported option : string

1 Answers  

---

ORA-09701: scnfy: maximum number of processes exceeded

1 Answers  

---

ORA-23431: wrong state: string

1 Answers  

---

ORA-08450: invalid specification of CR in picture mask

1 Answers  

---