As shown in "Example 2: Grouping DML Statements into Committed Transactions ", using the COMMITTED_DATA_ONLY option with the dictionary in the online redo log file is an easy way to focus on committed transactions. However, one aspect remains that makes visual inspection difficult: the association between the column names and their respective values in an INSERT statement are not apparent. This can be addressed by specifying the PRINT_PRETTY_SQL option. Note that specifying this option will make some of the reconstructed SQL statements nonexecutable.
This example assumes that you know you want to mine the redo log file that was most recently archived.
SELECT NAME FROM V$ARCHIVED_LOG WHERE FIRST_TIME = (SELECT MAX(FIRST_TIME) FROM V$ARCHIVED_LOG); NAME ------------------------------------------- /usr/oracle/data/db1arch_1_16_482701534.dbf
Specify the redo log file that was returned by the query in Step 1. The list will consist of one redo log file.
EXECUTE DBMS_LOGMNR.ADD_LOGFILE( - LOGFILENAME => '/usr/oracle/data/db1arch_1_16_482701534.dbf', - OPTIONS => DBMS_LOGMNR.NEW);
Start LogMiner by specifying the dictionary to use and the COMMITTED_DATA_ONLY and PRINT_PRETTY_SQL options.
EXECUTE DBMS_LOGMNR.START_LOGMNR(-
OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG + -
DBMS_LOGMNR.COMMITTED_DATA_ONLY + -
DBMS_LOGMNR.PRINT_PRETTY_SQL);
The DBMS_LOGMNR.PRINT_PRETTY_SQL option changes only the format of the reconstructed SQL, and therefore is useful for generating reports for visual inspection.
SELECT username AS USR, (XIDUSN || '.' || XIDSLT || '.' || XIDSQN) AS XID, SQL_REDO
FROM V$LOGMNR_CONTENTS;
USR XID SQL_REDO
---- --------- -----------------------------------------------------
OE 1.1.1484 set transaction read write;
OE 1.1.1484 update "OE"."PRODUCT_INFORMATION"
set
"WARRANTY_PERIOD" = TO_YMINTERVAL('+05-00')
where
"PRODUCT_ID" = '1799' and
"WARRANTY_PERIOD" = TO_YMINTERVAL('+01-00') and
ROWID = 'AAAHTKAABAAAY9mAAB';
OE 1.1.1484 update "OE"."PRODUCT_INFORMATION"
set
"WARRANTY_PERIOD" = TO_YMINTERVAL('+05-00')
where
"PRODUCT_ID" = '1801' and
"WARRANTY_PERIOD" = TO_YMINTERVAL('+01-00') and
ROWID = 'AAAHTKAABAAAY9mAAC';
OE 1.1.1484 commit;
HR 1.11.1476 set transaction read write;
HR 1.11.1476 insert into "HR"."EMPLOYEES"
values
"EMPLOYEE_ID" = 306,
"FIRST_NAME" = 'Nandini',
"LAST_NAME" = 'Shastry',
"EMAIL" = 'NSHASTRY',
"PHONE_NUMBER" = '1234567890',
"HIRE_DATE" = TO_DATE('10-jan-2012 13:34:43',
'dd-mon-yyyy hh24:mi:ss',
"JOB_ID" = 'HR_REP',
"SALARY" = 120000,
"COMMISSION_PCT" = .05,
"MANAGER_ID" = 105,
"DEPARTMENT_ID" = 10;
HR 1.11.1476 insert into "HR"."EMPLOYEES"
values
"EMPLOYEE_ID" = 307,
"FIRST_NAME" = 'John',
"LAST_NAME" = 'Silver',
"EMAIL" = 'JSILVER',
"PHONE_NUMBER" = '5551112222',
"HIRE_DATE" = TO_DATE('10-jan-2012 13:41:03',
'dd-mon-yyyy hh24:mi:ss'),
"JOB_ID" = 'SH_CLERK',
"SALARY" = 110000,
"COMMISSION_PCT" = .05,
"MANAGER_ID" = 105,
"DEPARTMENT_ID" = 50;
HR 1.11.1476 commit;
SELECT username AS USR, (XIDUSN || '.' || XIDSLT || '.' || XIDSQN) AS XID, SQL_UNDO
FROM V$LOGMNR_CONTENTS;
USR XID SQL_UNDO
---- --------- -----------------------------------------------------
OE 1.1.1484 set transaction read write;
OE 1.1.1484 update "OE"."PRODUCT_INFORMATION"
set
"WARRANTY_PERIOD" = TO_YMINTERVAL('+01-00')
where
"PRODUCT_ID" = '1799' and
"WARRANTY_PERIOD" = TO_YMINTERVAL('+05-00') and
ROWID = 'AAAHTKAABAAAY9mAAB';
OE 1.1.1484 update "OE"."PRODUCT_INFORMATION"
set
"WARRANTY_PERIOD" = TO_YMINTERVAL('+01-00')
where
"PRODUCT_ID" = '1801' and
"WARRANTY_PERIOD" = TO_YMINTERVAL('+05-00') and
ROWID = 'AAAHTKAABAAAY9mAAC';
OE 1.1.1484 commit;
HR 1.11.1476 set transaction read write;
HR 1.11.1476 delete from "HR"."EMPLOYEES"
where
"EMPLOYEE_ID" = 306 and
"FIRST_NAME" = 'Nandini' and
"LAST_NAME" = 'Shastry' and
"EMAIL" = 'NSHASTRY' and
"PHONE_NUMBER" = '1234567890' and
"HIRE_DATE" = TO_DATE('10-jan-2012 13:34:43',
'dd-mon-yyyy hh24:mi:ss') and
"JOB_ID" = 'HR_REP' and
"SALARY" = 120000 and
"COMMISSION_PCT" = .05 and
"MANAGER_ID" = 105 and
"DEPARTMENT_ID" = 10 and
ROWID = 'AAAHSkAABAAAY6rAAO';
HR 1.11.1476 delete from "HR"."EMPLOYEES"
where
"EMPLOYEE_ID" = 307 and
"FIRST_NAME" = 'John' and
"LAST_NAME" = 'Silver' and
"EMAIL" = 'JSILVER' and
"PHONE_NUMBER" = '555122122' and
"HIRE_DATE" = TO_DATE('10-jan-2012 13:41:03',
'dd-mon-yyyy hh24:mi:ss') and
"JOB_ID" = 'SH_CLERK' and
"SALARY" = 110000 and
"COMMISSION_PCT" = .05 and
"MANAGER_ID" = 105 and
"DEPARTMENT_ID" = 50 and
ROWID = 'AAAHSkAABAAAY6rAAP';
HR 1.11.1476 commit;
EXECUTE DBMS_LOGMNR.END_LOGMNR();