Resolve ORA-01843: Invalid month issue in Oracle database

Source: Internet
Author: User
1. This is because the client is a Chinese environment, format mon can not be used in English months, must be in Chinese "June"
If you do not want to modify the SQL statement to run, you need to use the ALTER session command to modify the nls_date_language to American before executing the statement, as follows:
Alter session set Nls_date_language= ' American ' displays the date in English.

2 If your client is an English-language environment, you are not querying data using the time function of Oracle data, you should use the time function in the Oracle database in the SQL statement.

Resolve ORA-01843: Invalid month issue in Oracle database

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