ORA-01843 not a valid month- Comparing Dates

I have a problem when try to select data from a table filtering by date. For example: The Oracle Error is: Probably the source data of table is corrupted, in this case: How can i solve this problem? Can I change this dates for null? The results of this select, select * from nls_session_parameters; , is:

SQL SELECT WHERE field contains words

Rather slow, but working method to include any of words: If you need all words to be present, use this: If you want something faster, you need to look into full text search, and this is very specific for each database type.

SQL SELECT WHERE field contains words

Rather slow, but working method to include any of words: If you need all words to be present, use this: If you want something faster, you need to look into full text search, and this is very specific for each database type.

SQL SELECT WHERE field contains words

Rather slow, but working method to include any of words: If you need all words to be present, use this: If you want something faster, you need to look into full text search, and this is very specific for each database type.