ORA-00995: missing or invalid synonym identifier
Cause: In a CREATE or DROP SYNONYM statement, the synonym name was either missing or invalid.
Action: Check syntax and spelling. A valid synonym name must be specified immediately following the keyword SYNONYM in both statements. Valid synonym names must begin with a letter, consist of alphanumeric characters and the special characters $, _, and #, and be less than or equal to 30 characters. They may not be reserved words.