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    Maxwell Miranda
    Oracle DBA Consultant.
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    August 2009
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    • Flashback database to date back and forth
      Code: --------- SELECT NAME, TIME FROM v$restore_point order by time; NAME TIME ---------------------------------------- ----------------------------------- RST_PNT_20180306_1135 06-MAR-18 AM *Got flashbacked to this 6th Mar* RST_PNT_20180308_0132 08-MAR-18 AM RST_PNT_20180315_0332 15-MAR-18 AM RST_PNT […]
    • Downgrade database from Oracle to Oracle using catdwgrd.sq
      Downgrade database from Oracle to Oracle Like to know if any one successfully downgraded the database from version Oracle 12cR2 ( Release 2) to Oracle 11g Release 2 ( using manual method of catdwgrd.sql. Please share your views and inputs as we are unable to downgrade it successfully. Refereed the https://docs.oracle.com/en/databa […]
    • New user in oracle having access to all tables
      Hi, I have created a new user in oracle database as follows create new user u1 identified by u1; grant create session to u1; when I login with new user ,it has access to all tables in other schema except system and sys tables. i want to create a user who does not have access to any table on any schema. how it can be achieved? Thanks
    • Auditing userid creation, deletion and changes to roles granted.
      Is there an oracle auditing option to audit userid creation, deletion and changes made to the userid (system/object privileges granted or revoked)?
    • ORACLE SQL - Adding Results from Multiple Select Statements
      I apologize if this question is not in the correct area. I have eight select statements, each to get the sum of particular information. These are not simple queries, so I will not include them here. I have made up a simpler version (based on some code I found in a forum) as shown below. So, I have eight sums. I need a ninth sum that is the total of all eight […]
    • Cannot change undo_tablespace parameter in RAC node
      Hi, I am trying to change the undo tablespace in DB instance, unsuccessfully. Approach 1: SQL> show parameter undo NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ temp_undo_enabled boolean FALSE undo_management string AUTO undo_retention integer 900 undo_tablespace string *UNDOTBS2* SQL> SQL> ALTER SYS […]
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User and the SQL’s they are running

set linesize 138
set pagesize 200
col c1 for a9
col c1 heading “OSUser”
col c2 for a9 trunc
col c2 heading “OraUser”
col b1 for a6
col b1 heading “OSPID”
col b2 for 9999 justify left
col b2 heading “OraSID”
col b3 for 999999 justify left
col b3 heading “Serial#”
col b5 for a3 trunc
col b5 heading STS
col sql_text for a65
set space 1
break on b1 nodup on c1 nodup on c2 nodup on b2 nodup on b3 skip 3
select c.spid b1, b.osuser c1, b.status b5,b.username c2, b.sid b2, b.serial# b3,to_char(b.logon_time,’DDMonYY HH24:MI:SS’)
where a.address = b.sql_address
and b.paddr = c.addr
and a.hash_value = b.sql_hash_value order by c.spid,a.hash_value,a.piece;


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