Bug 1 : java.sql.SQLException: ORA-20001: ORA-01861: literal does not match format string
Occured Time : When calling a store procedure with some parameters from java 17
Solutions:
The error message "java.sql.SQLException: ORA-20001: ORA-01861: literal format does not match string" indicates a problem with a date or timestamp format in an Oracle SQL query. The error suggests that there is a mismatch between the given literal value of the date or timestamp conversion and the specified format string.
There are steps you can take to troubleshoot and resolve this issue:
1. Check the date format:
Make sure that the date or timestamp format in your SQL query matches the actual format of the data you are trying to insert or query. Oracle uses a specific format model for date and timestamp literals, and any mismatch can cause this error.
Example:
TO_DATE('2022-01-08', 'YYYY-MM-DD')
2. Use TO_DATE or TO_TIMESTAMP:
If you're working with date or timestamp literals, be sure to use the TO_DATE or TO_TIMESTAMP functions to explicitly convert the string to a date or timestamp.
Example:
TO_DATE('2022-01-08', 'YYYY-MM-DD')
3. Check NLS_DATE_FORMAT:
Make sure the NLS_DATE_FORMAT session parameter is set correctly for your session. If the parameter is set to a different format, it may conflict with the date or timestamp literal in your query.
Example:
ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD';
4. Validate the input data:
Double-check the data you're trying to insert or search for to make sure it matches the specified date or timestamp format. Any data inconsistency can cause this error.
5. Review code and framework:
Examine the Java code that creates and executes SQL queries. Ensure that date or timestamp values passed in the query are correctly formatted according to Oracle SQL syntax.
6. Logging and Debugging:
Implement logging and debugging mechanisms in your Java code to print the actual SQL query executed with any date or timestamp literal value. This can help identify the specific instance causing the error.
By carefully examining and addressing these points, you should be able to resolve the "ORA-01861: literal format string does not match" error in your Java application connecting to an Oracle database.
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