Data logging records data processing activities, transactions, errors, and system events for audit trails, debugging, compliance, and operational monitoring. Learn comprehensive logging strategies for reliable data processing.
1234567891011121314151617181920212223242526272829WORKING-STORAGE SECTION. 01 TRANSACTION-LOG. 05 LOG-RECORD. 10 LOG-TIMESTAMP PIC 9(14). 10 LOG-TYPE PIC X(20). 10 LOG-DESCRIPTION PIC X(100). 10 USER-ID PIC X(8). 10 TRANSACTION-ID PIC 9(8). 10 RECORD-COUNT PIC 9(6). 10 LOG-STATUS PIC X. 88 LOG-SUCCESS VALUE 'S'. 88 LOG-ERROR VALUE 'E'. PROCEDURE DIVISION. PERFORM LOG-TRANSACTION LOG-TRANSACTION. MOVE FUNCTION CURRENT-DATE TO LOG-TIMESTAMP MOVE 'CUSTOMER_UPDATE' TO LOG-TYPE MOVE 'Customer balance updated successfully' TO LOG-DESCRIPTION MOVE 'USER123' TO USER-ID MOVE 12345678 TO TRANSACTION-ID MOVE 1 TO RECORD-COUNT MOVE 'S' TO LOG-STATUS WRITE TRANSACTION-LOG-RECORD DISPLAY 'Transaction logged: ' LOG-TYPE DISPLAY 'Status: ' LOG-STATUS DISPLAY 'User: ' USER-ID.
Implement comprehensive transaction logging to record all data processing activities. Include timestamps, transaction types, descriptions, user information, and status for complete audit trails.
12345678910111213141516171819202122232425262728293031WORKING-STORAGE SECTION. 01 ERROR-LOG. 05 ERROR-RECORD. 10 ERROR-TIMESTAMP PIC 9(14). 10 ERROR-TYPE PIC X(20). 10 ERROR-CODE PIC 9(4). 10 ERROR-MESSAGE PIC X(200). 10 ERROR-SEVERITY PIC X. 88 CRITICAL-ERROR VALUE 'C'. 88 WARNING-ERROR VALUE 'W'. 88 INFO-ERROR VALUE 'I'. 10 PROGRAM-NAME PIC X(30). 10 ERROR-CONTEXT PIC X(100). PROCEDURE DIVISION. PERFORM LOG-ERROR LOG-ERROR. MOVE FUNCTION CURRENT-DATE TO ERROR-TIMESTAMP MOVE 'DATA_VALIDATION' TO ERROR-TYPE MOVE 1001 TO ERROR-CODE MOVE 'Customer ID validation failed - invalid format' TO ERROR-MESSAGE MOVE 'C' TO ERROR-SEVERITY MOVE 'CUSTOMER_UPDATE_PROGRAM' TO PROGRAM-NAME MOVE 'Customer ID: 123456789 (too long)' TO ERROR-CONTEXT WRITE ERROR-LOG-RECORD DISPLAY 'Error logged: ' ERROR-TYPE DISPLAY 'Code: ' ERROR-CODE DISPLAY 'Message: ' ERROR-MESSAGE DISPLAY 'Severity: ' ERROR-SEVERITY.
Implement detailed error logging with error types, codes, messages, severity levels, program names, and context information. Use appropriate severity levels for different error types.
12345678910111213141516171819202122232425262728293031WORKING-STORAGE SECTION. 01 DATA-CHANGE-LOG. 05 CHANGE-RECORD. 10 CHANGE-TIMESTAMP PIC 9(14). 10 CHANGE-TYPE PIC X(10). 88 INSERT-CHANGE VALUE 'INSERT'. 88 UPDATE-CHANGE VALUE 'UPDATE'. 88 DELETE-CHANGE VALUE 'DELETE'. 10 TABLE-NAME PIC X(20). 10 RECORD-KEY PIC X(20). 10 OLD-VALUES PIC X(500). 10 NEW-VALUES PIC X(500). 10 CHANGE-USER PIC X(8). PROCEDURE DIVISION. PERFORM LOG-DATA-CHANGE LOG-DATA-CHANGE. MOVE FUNCTION CURRENT-DATE TO CHANGE-TIMESTAMP MOVE 'UPDATE' TO CHANGE-TYPE MOVE 'CUSTOMER_MASTER' TO TABLE-NAME MOVE 'CUST123456' TO RECORD-KEY MOVE 'BALANCE:1500.50,STATUS:A' TO OLD-VALUES MOVE 'BALANCE:2000.75,STATUS:A' TO NEW-VALUES MOVE 'USER456' TO CHANGE-USER WRITE DATA-CHANGE-LOG-RECORD DISPLAY 'Data change logged: ' CHANGE-TYPE DISPLAY 'Table: ' TABLE-NAME DISPLAY 'Key: ' RECORD-KEY DISPLAY 'User: ' CHANGE-USER.
Log all data changes including inserts, updates, and deletes. Record old and new values, table names, record keys, and user information for complete change audit trails.
1234567891011121314151617181920212223242526272829303132WORKING-STORAGE SECTION. 01 PERFORMANCE-LOG. 05 PERF-RECORD. 10 PERF-TIMESTAMP PIC 9(14). 10 PROGRAM-NAME PIC X(30). 10 OPERATION-TYPE PIC X(20). 10 START-TIME PIC 9(6). 10 END-TIME PIC 9(6). 10 ELAPSED-TIME PIC 9(6). 10 RECORDS-PROCESSED PIC 9(8). 10 MEMORY-USED PIC 9(8). 10 CPU-TIME PIC 9(6). PROCEDURE DIVISION. PERFORM LOG-PERFORMANCE LOG-PERFORMANCE. MOVE FUNCTION CURRENT-DATE TO PERF-TIMESTAMP MOVE 'CUSTOMER_ETL_PROGRAM' TO PROGRAM-NAME MOVE 'BATCH_PROCESSING' TO OPERATION-TYPE MOVE 143000 TO START-TIME MOVE 143045 TO END-TIME COMPUTE ELAPSED-TIME = END-TIME - START-TIME MOVE 10000 TO RECORDS-PROCESSED MOVE 2048000 TO MEMORY-USED MOVE 45 TO CPU-TIME WRITE PERFORMANCE-LOG-RECORD DISPLAY 'Performance logged: ' PROGRAM-NAME DISPLAY 'Elapsed time: ' ELAPSED-TIME ' seconds' DISPLAY 'Records processed: ' RECORDS-PROCESSED DISPLAY 'Memory used: ' MEMORY-USED ' bytes'.
Log performance metrics including execution times, record counts, memory usage, and CPU time. Monitor performance trends and identify bottlenecks for optimization.
123456789101112131415161718192021222324252627282930WORKING-STORAGE SECTION. 01 SECURITY-LOG. 05 SECURITY-RECORD. 10 SEC-TIMESTAMP PIC 9(14). 10 SEC-EVENT-TYPE PIC X(20). 10 SEC-USER-ID PIC X(8). 10 SEC-IP-ADDRESS PIC X(15). 10 SEC-ACTION PIC X(30). 10 SEC-RESULT PIC X(10). 88 SEC-SUCCESS VALUE 'SUCCESS'. 88 SEC-FAILURE VALUE 'FAILURE'. 10 SEC-DETAILS PIC X(200). PROCEDURE DIVISION. PERFORM LOG-SECURITY-EVENT LOG-SECURITY-EVENT. MOVE FUNCTION CURRENT-DATE TO SEC-TIMESTAMP MOVE 'USER_LOGIN' TO SEC-EVENT-TYPE MOVE 'USER789' TO SEC-USER-ID MOVE '192.168.1.100' TO SEC-IP-ADDRESS MOVE 'LOGIN_ATTEMPT' TO SEC-ACTION MOVE 'SUCCESS' TO SEC-RESULT MOVE 'User successfully logged in to customer system' TO SEC-DETAILS WRITE SECURITY-LOG-RECORD DISPLAY 'Security event logged: ' SEC-EVENT-TYPE DISPLAY 'User: ' SEC-USER-ID DISPLAY 'Result: ' SEC-RESULT DISPLAY 'Details: ' SEC-DETAILS.
Log security events including login attempts, access violations, permission changes, and suspicious activities. Record user IDs, IP addresses, actions, and results for security monitoring.
1234567891011121314151617181920212223242526272829WORKING-STORAGE SECTION. 01 STRUCTURED-LOG. 05 LOG-ENTRY. 10 LOG-TIMESTAMP PIC 9(14). 10 LOG-LEVEL PIC X(5). 88 DEBUG-LEVEL VALUE 'DEBUG'. 88 INFO-LEVEL VALUE 'INFO'. 88 WARN-LEVEL VALUE 'WARN'. 88 ERROR-LEVEL VALUE 'ERROR'. 10 LOG-CATEGORY PIC X(20). 10 LOG-MESSAGE PIC X(200). 10 LOG-FIELDS PIC X(500). PROCEDURE DIVISION. PERFORM STRUCTURED-LOGGING STRUCTURED-LOGGING. MOVE FUNCTION CURRENT-DATE TO LOG-TIMESTAMP MOVE 'INFO' TO LOG-LEVEL MOVE 'DATA_PROCESSING' TO LOG-CATEGORY MOVE 'Customer data processing completed successfully' TO LOG-MESSAGE MOVE 'CUSTOMER_ID:123456,RECORDS:1000,STATUS:SUCCESS' TO LOG-FIELDS WRITE STRUCTURED-LOG-RECORD DISPLAY 'Structured log entry:' DISPLAY 'Level: ' LOG-LEVEL DISPLAY 'Category: ' LOG-CATEGORY DISPLAY 'Message: ' LOG-MESSAGE DISPLAY 'Fields: ' LOG-FIELDS.
Use structured logging formats with consistent fields, log levels, categories, and structured data. This enables better log analysis, searching, and automated processing.
12345678910111213141516171819202122232425262728WORKING-STORAGE SECTION. 01 LOG-MANAGEMENT. 05 LOG-FILE-INFO. 10 CURRENT-LOG-FILE PIC X(50). 10 LOG-FILE-SIZE PIC 9(8). 10 MAX-LOG-SIZE PIC 9(8) VALUE 10000000. 10 LOG-RETENTION-DAYS PIC 9(3) VALUE 90. 10 LOG-ARCHIVE-PATH PIC X(100). PROCEDURE DIVISION. PERFORM MANAGE-LOG-FILES MANAGE-LOG-FILES. MOVE 'CUSTOMER_LOG_20231225.DAT' TO CURRENT-LOG-FILE MOVE 5000000 TO LOG-FILE-SIZE MOVE '/ARCHIVE/LOGS/' TO LOG-ARCHIVE-PATH *> Check if log file needs rotation IF LOG-FILE-SIZE > MAX-LOG-SIZE PERFORM ROTATE-LOG-FILE END-IF *> Check for old log files to archive PERFORM ARCHIVE-OLD-LOGS DISPLAY 'Log management completed' DISPLAY 'Current log file: ' CURRENT-LOG-FILE DISPLAY 'Log file size: ' LOG-FILE-SIZE ' bytes'.
Implement log rotation and management to handle large log files efficiently. Archive old logs, manage disk space, and maintain appropriate retention periods for compliance.
12345678910111213141516171819202122232425WORKING-STORAGE SECTION. 01 CENTRALIZED-LOGGING. 05 CENTRAL-LOG-RECORD. 10 LOG-SOURCE PIC X(30). 10 LOG-TIMESTAMP PIC 9(14). 10 LOG-LEVEL PIC X(5). 10 LOG-MESSAGE PIC X(300). 10 LOG-METADATA PIC X(200). PROCEDURE DIVISION. PERFORM SEND-TO-CENTRAL-LOG SEND-TO-CENTRAL-LOG. MOVE 'CUSTOMER_SYSTEM' TO LOG-SOURCE MOVE FUNCTION CURRENT-DATE TO LOG-TIMESTAMP MOVE 'INFO' TO LOG-LEVEL MOVE 'Customer data processing batch completed' TO LOG-MESSAGE MOVE 'BATCH_ID:12345,RECORDS:5000,STATUS:SUCCESS' TO LOG-METADATA *> Send to centralized logging system CALL 'CENTRAL-LOGGER' USING CENTRAL-LOG-RECORD DISPLAY 'Log sent to central system: ' LOG-SOURCE DISPLAY 'Message: ' LOG-MESSAGE DISPLAY 'Metadata: ' LOG-METADATA.
Implement centralized logging to collect logs from multiple systems and programs. Use standardized formats and centralized log management systems for comprehensive monitoring.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748WORKING-STORAGE SECTION. 01 LOG-ANALYSIS. 05 ANALYSIS-RECORD. 10 ANALYSIS-TIMESTAMP PIC 9(14). 10 ANALYSIS-TYPE PIC X(20). 10 ERROR-COUNT PIC 9(6). 10 WARNING-COUNT PIC 9(6). 10 SUCCESS-COUNT PIC 9(6). 10 ANALYSIS-SUMMARY PIC X(200). PROCEDURE DIVISION. PERFORM ANALYZE-LOGS ANALYZE-LOGS. MOVE FUNCTION CURRENT-DATE TO ANALYSIS-TIMESTAMP MOVE 'DAILY_LOG_ANALYSIS' TO ANALYSIS-TYPE MOVE 0 TO ERROR-COUNT MOVE 0 TO WARNING-COUNT MOVE 0 TO SUCCESS-COUNT *> Analyze log entries OPEN INPUT LOG-FILE PERFORM UNTIL EOF READ LOG-FILE AT END SET EOF TO TRUE NOT AT END EVALUATE LOG-LEVEL WHEN 'ERROR' ADD 1 TO ERROR-COUNT WHEN 'WARN' ADD 1 TO WARNING-COUNT WHEN 'INFO' ADD 1 TO SUCCESS-COUNT END-EVALUATE END-READ END-PERFORM CLOSE LOG-FILE *> Generate analysis summary STRING 'Daily analysis: ' SUCCESS-COUNT ' success, ' WARNING-COUNT ' warnings, ' ERROR-COUNT ' errors' INTO ANALYSIS-SUMMARY END-STRING DISPLAY 'Log analysis completed:' DISPLAY 'Errors: ' ERROR-COUNT DISPLAY 'Warnings: ' WARNING-COUNT DISPLAY 'Success: ' SUCCESS-COUNT DISPLAY 'Summary: ' ANALYSIS-SUMMARY.
Implement log analysis and monitoring to identify patterns, trends, and issues. Generate summaries, alerts, and reports based on log analysis for operational insights.