ORA-01061: cannot start up a V8 server using a V7 client application
Cause: You are using an Oracle client application linked with version 7 (or lower) libraries and you attempted to start up a V8 (or higher) server.
Action: Use a client application linked with V8 (or higher) libraries.60
ORA-01062: unable to allocate memory for define buffer
Cause: Exceeded the maximum buffer size for current plaform
Action: Use piecewise fetch with a smaller buffer size
ORA-01070: Using an old version of Oracle for the server
Cause: Using pre 7.0.10.1 version of oracle for server
Action: Upgrade server to post 7.0.10.1 version
ORA-01071: cannot perform operation without starting up ORACLE
Cause: Obvious
Action: None

ORA-01072: cannot stop ORACLE; ORACLE not running
Cause: Obvious
Action: None
ORA-01073: fatal connection error: unrecognized call type
Cause: An illegal internal operation was attempted.
Action: Contact your customer support representative.
ORA-01074: cannot shut down ORACLE; inside a login session – log off first
Cause: Obvious
Action: None
ORA-01075: you are currently logged on
Cause: Attempt to login while logged in.
Action: None
ORA-01076: multiple logons per process not yet supported
Cause: Obvious
Action: None

ORA-01077: background process initialization failure
Cause: Failure during initialization of ORACLE background processes.
Action: Further diagnostic information should be in the error stack or in the trace file.
ORA-01078: failure in processing system parameters
Cause: Failure during processing of INIT.ORA parameters during system startup.
Action: Further diagnostic information should be in the error stack.
ORA-01079: ORACLE database was not properly created, operation aborted
Cause: There was an error when the database or control file was created.
Action: s to recreate the database or a new control file.
ORA-01080: error in shutting down ORACLE
Cause: Failure during system shutdown.
Action: Further diagnostic information should be in the error stack.

Above are list of Oracle Database Errors or Warnings from Error ORA-01061 to ORA-01080 received while performing certain operation against Oracle Database or related products.

What are Oracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database.  Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

Thanks,
SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.