Webinar: Oracle Database 23c Security new features

This Webinar helps you to understand Oracle Database 23c Security new features and head start using these features

Date and time: July 3rd 2023, 8:00am-9:00am
Pacific Daylight Time (San Francisco, GMT-07:00)

This Webinar covers following Topics.

•  SQL Firewall
•  Audit
•  Authentication
•  Authorization
•  Encryption
•  Autonomous Database
•  Other

To register for this Webinar, please send an email to SatishbabuGunukula@gmail.com
You will receive an email confirmation with meeting link or Webinar link will be posted here.

Note that registrations are limited and first come and first serve basis.

For presentation link Click here

Thanks & Regards,
http://www.oracleracexpert.com

Oracle 19c import issues ORA-31693, ORA-02354, ORA-39002, ORA-39405

When performing import come across the following issue

ORA-31693: Table data object "ORCL"."ITEMCG" failed to load/unload and is being skipped due to error:
ORA-02354: error in exporting/importing data
ORA-39840: A data load operation has detected data stream format error .
ORA-39844: Bad stream format detected: [klaprs_62] [139751105749101] [139751105749012] [4] [2] [2065583] [] []

User may encounter this issue when new column added to a table with cokumn optimization enabled and the same column was modified.

Below are the workarounds

• Use access_method=EXTERNAL_TABLE during export

• Prior export add and drop a dummy column to the problematic table using

SQL> ALTER TABLE <table_name> ADD dummy number;
SQL> ALTER TABLE <table_name> DROP dummy number;

• Take export of failed table and import using CONTENT=DATA_ONLY as tableau structure already imported.

The fix for this bug was initially available on 19.13 and above see if it helps.

Also, I come across below issues when importing data

ORA-39002: invalid operation
ORA-39405: Oracle Data Pump does not support importing from a source database with TSTZ version 33 into a target database with TSTZ version 32.

User may encounter this issue when export from higher time zone version and importing into lower time zone version.

• Patch the target database to higher or equal to source time zone patch or DST TZ version
• Create a database with same time zone and perform export/import

For latest DST patches refer,

• Oracle RDBMS and OJVM DST-related notes
• Updated DST Transitions and New Time Zones in Oracle RDBMS and OJVM Time Zone File Patches (Doc ID 412160.1)

Hope this helps,

Thanks & Regards

https://oracleracexpert.com

Active Sessions, Proxy Sessions and Locked objects in Oracle

I have received few requests from Oracle User community to provide SQL queries related to active sessions, proxy sessions and locked objects in a session. Here are few SQL queries which you can use in day to day monitoring.

 
--------------------------------------------------------
--Script : ACTIVE SESSIONS
--Author : oracleracexpert.com
--------------------------------------------------------
SET PAGESIZE 1000
SET LINESIZE 600

COLUMN username FORMAT A10
COLUMN osuser FORMAT A10

COLUMN sid FORMAT 9999

COLUMN serial# FORMAT 999999999

COLUMN status FORMAT A10
COLUMN machine FORMAT A20
COLUMN program FORMAT A40
COLUMN module FORMAT A35
COLUMN action FORMAT A15
COLUMN logon_time FORMAT A20

SELECT s.username,

s.osuser,

s.sid,

s.serial#,

p.spid,

s.lockwait,

s.status,

s.machine,

s.program,

s.module,

s.action,

TO_CHAR(s.logon_Time,'MM-DD-YYYY HH24:MI:SS') AS logon_time,

s.blocking_session_status AS BlockStatus

FROM v$session s, v$process p
WHERE s.paddr = p.addr
AND s.status = 'ACTIVE'
ORDER BY s.username, s.osuser;

------------------------------------

--Script : Active Session waits

--Author : oracleracexpert.com

------------------------------------

SET PAGESIZE 1000

SET LINESIZE 600

COLUMN username FORMAT A10

COLUMN osuser FORMAT A10

COLUMN sid FORMAT 9999

COLUMN serial# FORMAT 999999999

COLUMN spid FORMAT A10

COLUMN state FORMAT A10

COLUMN wait_class FORMAT A20

COLUMN seconds_in_wait FORMAT 999999999

COLUMN module FORMAT A35

COLUMN blocking_session FORMAT A20

COLUMN blocking_session_status FORMAT A20

SELECT s.username,

       s.osuser,

       s.sid,

       s.serial#,

   p.spid, 

       s.state,

   s.wait_class,

       s.seconds_in_wait,

       s.module,

       TO_CHAR(s.logon_Time,'MM-DD-YYYY HH24:MI:SS') AS logon_time,

   s.blocking_session,

       s.blocking_session_status AS BlockStatus

FROM   v$session s, v$process p

WHERE  s.paddr  = p.addr

AND    s.status = 'ACTIVE'

ORDER BY 1,2;

--------------------------------------------------------
--Script : PROXY SESSIONS
--Author : oracleracexpert.com
--------------------------------------------------------
SET PAGESIZE 1000
SET LINESIZE 600

COLUMN username FORMAT A10
COLUMN osuser FORMAT A10

COLUMN sid FORMAT 9999

COLUMN serial# FORMAT 999999999

COLUMN status FORMAT A10
COLUMN machine FORMAT A20
COLUMN program FORMAT A40
COLUMN module FORMAT A35
COLUMN action FORMAT A15
COLUMN logon_time FORMAT A20

SELECT s.username,

s.osuser,

s.sid,

s.serial#,

p.spid,

s.lockwait,

s.status,

s.machine,

s.program,

s.module,

s.action,

TO_CHAR(s.logon_Time,'MM-DD-YYYY HH24:MI:SS') AS logon_time,

s.blocking_session_status AS BlockStatus

FROM  v$session s, v$process p, v$session_connect_info sci
WHERE s.paddr = p.addr
AND s.sid = sci.sid
AND s.serial# = sci.serial#
AND sci.authentication_type = 'PROXY'
ORDER BY s.username, s.osuser;

--------------------------------------------------------
--Script : LOCKED OBJECT SESSIONS
--Author : oracleracexpert.com
--------------------------------------------------------
SET PAGESIZE 1000
SET LINESIZE 600

COLUMN sid FORMAT 9999

COLUMN serial# FORMAT 999999999

COLUMN status FORMAT A10
COLUMN owner FORMAT A20
COLUMN object_owner FORMAT A20
COLUMN object_name FORMAT A30
COLUMN object_type FORMAT A15
COLUMN oracle_username FORMAT A15
COLUMN locked_mode FORMAT A15
COLUMN os_user_name FORMAT A15

SELECT s.sid,

s.serial#,

s.status,

do.owner,

do.object_name,

do.object_type,

lo.oracle_username,

Decode(lo.locked_mode, 0, 'None',

1, 'Null (NULL)',

2, 'Row-S (SS)',

3, 'Row-X (SX)',

4, 'Share (S)',

5, 'S/Row-X (SSX)',

6, 'Exclusive (X)',

lo.locked_mode) locked_mode,

lo.os_user_name

FROM v$locked_object lo, dba_objects do, v$session s
WHERE lo.session_id = s.sid
AND do.object_id = lo.object_id
ORDER BY 1, 2, 3, 4;

Thanks & Regards,

https://oracleracexpert.com