oracle error messages

Oracle/PLSQL: ORA-00995

Learn the cause and how to resolve the ORA-00995 error message in Oracle.


When you encounter an ORA-00995 error, the following error message will appear:

  • ORA-00995: missing or invalid synonym identifier


You tried to CREATE or DROP a synonym, but the name of the synonym that you used was either missing or invalid.


The option(s) to resolve this Oracle error are:

Option #1

Correct the name of the synonym.

Synonym names must meet the following criteria:

  • Must begin with a letter.
  • Must consist of alphanumeric characters or the following special characters: $, _, and #.
  • Can not be reserved words.
  • Must be no more than 30 characters in length.