ORA-31625: Schema string is needed to import this object, but is unaccessible
Cause: An error occurred when attempting to import objects. The schema specified is needed to import this object, but access to this schema is not available
Action: Refer to any following error messages for possible actions. Correct the error, if possible, and try the operation again. If the error occurs again, contact Oracle Customer Support and report the error
https://support.oracle.com/
http://www.oracle.com/
ORA-31624: A job cannot be modified after it has started
Cause: The user attempted to change the definition of a Data Pump job through filters, transforms or parameters after it had started. These changes can only be made while defining a job
Action: Stop the current job and rerun it with the correct definition
ORA-31623: a job is not attached to this session via the specified handle
Cause: An attempt to reference a job using a handle which is invalid or no longer valid for the current session
Action: Select a handle corresponding to a valid active job or start a new job
ORA-31622: ORACLE server does not have string access to the specified file
Cause: An attempt was made to read or write files within protected directories
Action: Correct the file/directory permissions and try the call again
ORA-31621: error creating master process
Cause: Setup to create a master process failed
Action: Refer to any following error messages for possible actions. Correct the error, if possible, and try the operation again. If the error occurs again, contact Oracle Customer Support and report the error
ORA-31620: file or device "string" cannot be specified for string operation
Cause: There was an inappropriate use of file or device in the current operation
Action: Correct operation or job setup
ORA-31619: invalid dump file "string"
Cause: Either the file was not generated by Export or it was corrupted
Action: If the file was indeed generated by Export, report this as an Import bug and submit the export file to Oracle Customer Support
ORA-31618: dump file size too small
Cause: The value specified for the FILESIZE parameter or the VOLUMESIZE parameter was too small to hold the header information for the export file, plus any data
Action: Increase the value of the FILESIZE or VOLUMESIZE parameter
ORA-31617: unable to open dump file "string" for write
Cause: Export was unable to open the export file for writing. This message is usually followed by device messages from the operating system
Action: Take appropriate action to restore the device
ORA-31616: unable to write to dump file "string"
Cause: Export was unable to write to the export file, probably because of a device error. This message is usually followed by a device message from the operating system
Action: Take appropriate action to restore the device