ORA-00600 error in Oracle is an internal error generated by the database itself. This is a general error, and its cause can vary depending on the specific arguments given after ORA-00600. These arguments are important for diagnosing the issue and typically indicate a bug, a corrupted block, or a hardware issue.
Steps to troubleshoot ORA-00600 errors
Identify the Arguments
Check the arguments in the ORA-00600 error message. The first argument is the primary error code, and the others provide more details.
Example: ORA-00600: [arg1] [arg2] [arg3]...
Consult Oracle Support
Visit Oracle's Support Website and search for the ORA-00600 error with the specific arguments.
Use Oracle's ORA-600/ORA-7445 Lookup Tool to identify known bugs and solutions based on the arguments provided.
Check for Patch or Upgrade
Many ORA-00600 errors are caused by known bugs in the Oracle software. Check if a patch or an upgrade is available that fixes the issue.
Analyze the Alert Log
Look for more information in the Oracle alert log (alert_SID.log). This log can provide additional details about the error and related issues.
Check Trace Files
Locate trace files generated by the error. These files are stored in the trace directory under the Oracle Diagnostic Destination (ADR_HOME).
Review the trace file for additional diagnostic information.
DBMS Package for Error Handling
Use the DBMS_HM package (Health Monitor) to perform diagnostic checks on the database.
Example:
BEGIN
DBMS_HM.RUN_CHECK('DB Structure Integrity Check', 'check_name');
END;
/
Review the results of the integrity check for any database corruption or anomalies.
Analyze Database Integrity
You can use the following command to check the consistency of the data dictionary:
ANALYZE TABLE table_name VALIDATE STRUCTURE CASCADE;
If the error points to a specific table or object, use this command to verify its integrity.
Restore from Backup
If the issue is related to data corruption, restoring from a known good backup might be necessary.
Commands and Tools for Diagnostics
Trace the Error
Enable tracing to capture detailed information.
ALTER SESSION SET EVENTS '600 trace name errorstack level 3';
Query System Tables
Check for corrupted blocks:
SELECT * FROM v$database_block_corruption;
Check Session Information
Identify the session that triggered the ORA-00600 error:
SELECT s.sid, s.serial#, s.username, s.osuser, s.program
FROM v$session s
WHERE s.sid IN (SELECT sid FROM v$lock WHERE block > 0);
Use dbv Utility
Use the dbv (Data File Verify) utility to check for physical corruption in datafiles:
dbv file=/path/to/datafile.dbf blocksize=8192
Gather Diagnostic Data
Use the Oracle Support tool ADRCI (Automatic Diagnostic Repository Command Interface) to package diagnostic data:
adrci> show problem
adrci> show incident
adrci> ips create package problem X
adrci> ips add incident Y
adrci> ips generate package X
Check Current Sessions and Processes:
Get an overview of running sessions:
SELECT sid, serial#, username, status, osuser, program
FROM v$session
WHERE status = 'ACTIVE';
View Process State Information:
Check the process state with the following command:
SELECT pid, spid, tracefile FROM v$process WHERE addr IN (SELECT paddr FROM v$session WHERE sid = <sid>);
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