How to fix Oracle scheduled task failed 16 times

The reasons for Oracle scheduled task failure 16 times may include invalid package, insufficient user permissions, database inactivity, or insufficient resources. Repair steps include: 1. Verify the validity of the package; 2. Check user permissions; 3. Check database status; 4. Monitor resource usage; 5. Diagnose other abnormalities; 6. Reset scheduled tasks.

Fix Oracle scheduled task failed 16 times

Cause of the problem

The reason why Oracle scheduled tasks failed 16 times may be due to the following problems:

• Package invalid exception: The stored procedure or function used by the scheduled task is modified, causing the package to be invalid .
• Insufficient user permissions: The user running the scheduled task does not have execution permissions on the calling object (such as a stored procedure).
• Database is inactive: The database is closed or unavailable, causing scheduled tasks to fail to execute.
• Insufficient database resources: Scheduled tasks require a large amount of resources, such as CPU or memory, but the database currently cannot provide them.
• Other exceptions: Any other exception caused by unexpected conditions, such as ORA- errors.

Fix steps

1. Verify package validity

Run the following command from the command prompt:

<code class="sql">SELECT object_name, status FROM dba_objects WHERE object_type='PACKAGE' AND status='INVALID';</code>

If you find invalid packages, please recompile or reload them.

2. Check user permissions

Use the following command to check the user permissions for executing scheduled tasks:

<code class="sql">SELECT granted_role FROM dba_role_privs WHERE grantee = '<user_name>';</code>

Make sure the user has execution permissions for the relevant objects .

3. Check the database status

Use the following command to check the database status:

<code class="sql">SELECT open_mode FROM v$database;</code>

If the result is 'READ ONLY' or the database is closed, Please restart the database.

4. Monitor resource usage

Use the following command to monitor database resource usage:

<code class="sql">SELECT name, busy_time, wait_time, time_waited FROM v$active_session_history;</code>

If scheduled tasks have high demand for resources, please consider optimization code or increase database resource allocation.

5. Diagnose other exceptions

If the above steps do not solve the problem, please check the Oracle log file (/oracle/[db_name]/trace/[trace_file]. dbf).

6. Reset the scheduled task

Reset the scheduled task:

<code class="sql">BEGIN
  SYS.DBMS_SCHEDULER.DISABLE('<job_name>');
  SYS.DBMS_SCHEDULER.DROP_JOB('<job_name>');
END;
/</code>

Then re-create the scheduled task.

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