UNDO_SQL in FLASHBACK_TRANSACTION_QUERY is null

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• error format of the year in the instructions at FLASHBACK_TRANSACTION_QUERY. UNDO_SQL

  I run Remove 20 on table tab1 and validate them.
  
  flashback is enabled: in the field of table FLASHBACK_TRANSACTION_QUERY UNDO_SQL I can find all the instructions to cancel: in this case, I found exactly 20 insert 20 rows that I deleted.
  
  the problem is in the date format: insert all have such a timestamp field:
  
  INSERT IN THE SCHEMA. Tab1 (< fields >) VALUES (TO_TIMESTAMP (February 1, 90 00:00:00 '), < other values >)
  
  
  
  This IS NOT GOOD, insert: I want 4-digit year, so I try to change sessions:
  
  ALTER SESSION SET nls_timestamp_format = 'DD-MON-YYYY HH24:MI:SS ";
  
  
  then I re - run 20 e delete replay flashback table... now insert all have such a timestamp field:
  
  INSERT IN THE SCHEMA. Tab1 (< fields >) VALUES (TO_TIMESTAMP (February 1, 90 00:00:00 '), < other values >)
  
  
  This insert IS ALSO NOT GOOD... good year 1990 is NO 0090! so I try another format:
  
  ALTER SESSION SET nls_timestamp_format = 'DD-MON-RRRR HH24:MI:SS ";
  
  and then I also try:
  
  ALTER SESSION SET nls_timestamp_format = 'DD-MON-RR HH24:MI:SS. "
  
  
  nothing... I always have year 0090 in the Insert (instead of 1990)
  
  
  P.S. In practice I want something like this: http://www.oracle-developer.net/display.php?id=320
  
  half page, where it says XID 040028008 A 010000 there is the format I need

  I made just a test:

  SQL> select undo_sql from FLASHBACK_TRANSACTION_QUERY  where table_owner = 'A'
    2  /
  
  UNDO_SQL
  -------------------------------------------------------------------------------------------------------------------------
  insert into "A"."T12"("C1") values (TO_TIMESTAMP('21-JUN-90 06.57.35.000000 PM'));
  insert into "A"."T12"("C1") values (TO_TIMESTAMP('16-JUN-09 06.54.35.656000 PM'));
  
  13 rows selected.
  
  SQL> alter session set nls_timestamp_format = 'DD-MON-RRRR HH.MI.SSXFF AM'
    2  /
  
  Session altered.
  
  SQL> select undo_sql from FLASHBACK_TRANSACTION_QUERY  where table_owner = 'A'
    2  /
  
  UNDO_SQL
  -------------------------------------------------------------------------------------------------------------------------
  insert into "A"."T12"("C1") values (TO_TIMESTAMP('21-JUN-1990 06.57.35.000000 PM'));
  insert into "A"."T12"("C1") values (TO_TIMESTAMP('16-JUN-2009 06.54.35.656000 PM'));
  

  You are quite sure that your original data were in 1990?

  With greetings
  Krystian Zieja

• How to obtain the details of the last dml performed on a table

  Oracle 9i: database
  
  Hai All
  
  I made an update on a table yesterday. So how to get these details (the last DML operations performed).
  
  Any help is highly appricatable
  
  
  Thanks and greetings
  
  Srikkanth.M

  If the flame is enabled in your database, you can query FLASHBACK_TRANSACTION_QUERY for your TABLE_NAME and filter by START_TIMESTAMP AND COMMI_TIMESTAMP.

  SQL>  desc flashback_transaction_query;
   Name                                      Null?    Type
   ----------------------------------------- -------- ----------------------------
   XID                                                RAW(8)
   START_SCN                                          NUMBER
   START_TIMESTAMP                                    DATE
   COMMIT_SCN                                         NUMBER
   COMMIT_TIMESTAMP                                   DATE
   LOGON_USER                                         VARCHAR2(30)
   UNDO_CHANGE#                                       NUMBER
   OPERATION                                          VARCHAR2(32)
   TABLE_NAME                                         VARCHAR2(256)
   TABLE_OWNER                                        VARCHAR2(32)
   ROW_ID                                             VARCHAR2(19)
   UNDO_SQL                                           VARCHAR2(4000)
  

• SQL undo

  Hello
  in 10g R2:
  user SCOTT has updated EMP table:

  update emp set sal=2000 where ENAME='JAMES';

  And SYS DBA question table FLASHBACK_TRANSACTION_QUERY:

  SQL> select operation, undo_sql from FLASHBACK_TRANSACTION_QUERY where logon_user='SCOTT';
  
  OPERATION
  --------------------------------
  UNDO_SQL
  --------------------------------------------------------------------------------
  BEGIN
  
  
  UPDATE
  update "SCOTT"."EMP" set "SAL" = '950' where ROWID = 'AAAMfPAAEAAAAAgAAL';

  And try to CANCEL it:

  SQL> update "SCOTT"."EMP" set "SAL" = '950' where ROWID = 'AAAMfPAAEAAAAAgAAL';

  But the sql session hangs on it.
  Do you have an explanation?
  Thank you.

  Have you committed the previous refresh?

  concerning

• FLASHBACK_TRANSACTION_QUERY does not

  I try the following and it still fails.
  Can someone tell me why?
  

  SQL> select * from v$version;
  
  BANNER
  --------------------------------------------------------------------------------
  Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
  PL/SQL Release 11.2.0.3.0 - Production
  CORE    11.2.0.3.0      Production
  TNS for Linux: Version 11.2.0.3.0 - Production
  NLSRTL Version 11.2.0.3.0 - Production
  
  SQL> show parameter undo_tablespace
  
  NAME                                 TYPE        VALUE
  ------------------------------------ ----------- ------------------------------
  undo_tablespace                      string      UNDOTBS1
  SQL> show parameter undo_retention
  
  NAME                                 TYPE        VALUE
  ------------------------------------ ----------- ------------------------------
  undo_retention                       integer     900
  SQL> select retention
    2  from dba_tablespaces
    3  where tablespace_name='UNDOTBS1';
  
  RETENTION
  -----------
  GUARANTEE
  
  SQL> connect test/test
  Connected.
  SQL> create table tx(x int);
  
  Table created.
  
  SQL> insert into tx values(0);
  
  1 row created.
  
  SQL> commit;
  
  Commit complete.
  
  SQL> select * from tx;
  
           X
  ----------
           0
  
  SQL> update tx set x=5 where x=0;
  
  1 row updated.
  
  SQL> commit;
  
  Commit complete.
  
  SQL> connect admin/admin
  Connected.
  SQL> select versions_xid XID, versions_startscn START_SCN,
    2    versions_endscn END_SCN, versions_operation OPERATION,
    3    x
    4  from test.tx
    5  versions between scn minvalue and maxvalue;
  
  XID               START_SCN    END_SCN O          X
  ---------------- ---------- ---------- - ----------
                                                    5
  
  SQL> --
  SQL> select     xid, start_scn, commit_scn, operation, logon_user, undo_sql
    2  from flashback_transaction_query
    3  where  table_owner='TEST'
    4  and table_name='TX';
  
  no rows selected
  
  SQL>

  I see that I have the TABLE_OWNER value NULL column:
  

  SQL> select     xid, table_owner, table_name, operation, logon_user, undo_sql
    2  from flashback_transaction_query
    3  where table_name='TX'
    4  order by start_scn;
  
  XID              TABLE_OWNER TABLE_NAME OPERATION                        LOGON_USER UNDO_SQL
  ---------------- ----------- ---------- -------------------------------- ---------- ---------------
  02000D001E030000             TX         UNKNOWN                          TEST
  03001A001C030000             TX         UNKNOWN                          TEST
  
  SQL>

  Edited by: P. Forstmann on May 28, 2013 21:18
  
  Edited by: P. Forstmann on May 28, 2013 21:20

  you have enabled the additional logging

• Auto unblocking "null" Apple Watch

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• Siri sends texts to null

  Siri frequently sends texts to a "null" contact no listing in contacts, ineffective reboot.

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• Null message dated 31/12/1969

  Periodically a message null - no object of /, content - with a date of 12/31/1969, appears in a folder randomly. View source shows nothing. I can delete the message.

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• Backup problem: iMacG5.sparsebundle could not be accessed error null

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• How can I delete a data: / / (null) we Marshals.gov of the browser Chrome on an iPad?

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