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What NEW did you learn today in Orafaq [message #592513] Fri, 09 August 2013 04:22 Go to next message
Lalit Kumar B
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Folks,

I believe, here in Orafaq, everyone posting/reading/participating learns something NEW everyday. Whenever I learn something new about Oracle, it gives me so much pleasure. I feel like I got a new mission to learn and do more experiment on it. Well, it motivates me like anything. I share it with my friends/colleagues and have lots of discussion. And then I realize nothing could have been better for that day.

If anybody feels they got something new to learn in Orafaq, and if you have spare time, then do share it.
Re: What NEW did you learn today in Orafaq [message #592529 is a reply to message #592513] Fri, 09 August 2013 08:05 Go to previous messageGo to next message
Flyby
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Perhaps because the use of shared server (waiting in queue) instead of dedicated server? Found this reference: high virtual circuit waits after upgrade. Mentions MOSC Note 1225943.1 titled High virtual circuit waits after upgrade
Re: What NEW did you learn today in Orafaq [message #592539 is a reply to message #592529] Fri, 09 August 2013 08:34 Go to previous messageGo to next message
Lalit Kumar B
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Well, If I am not wrong, and if other folks agree with me, not everything can be trusted what Burleson proves. You might end up believing in incorrect ways to achieve the output. Sometimes, even the output is faked out.
Re: What NEW did you learn today in Orafaq [message #592543 is a reply to message #592539] Fri, 09 August 2013 08:48 Go to previous messageGo to next message
BlackSwan
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Burleson is correct about 50% of the time; the challenge being knowing which 50% is false.
Re: What NEW did you learn today in Orafaq [message #592701 is a reply to message #592513] Sun, 11 August 2013 06:22 Go to previous messageGo to next message
Lalit Kumar B
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I learnt something new about Data Pump parameters default values

Oracle Lifetime Support

[Updated on: Tue, 11 March 2014 13:44] by Moderator

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Re: What NEW did you learn today in Orafaq [message #593835 is a reply to message #592701] Wed, 21 August 2013 05:34 Go to previous messageGo to next message
ThomasG
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That there seems to be a mechanism for 32bit OS/Oracle to use more than 4GB for SGA.
Re: What NEW did you learn today in Orafaq [message #594913 is a reply to message #593835] Tue, 03 September 2013 22:02 Go to previous messageGo to next message
trantuananh24hg
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Only 2 websites I've been being interested to visit, there are TomKyte and Tanel Porder. Smile
Only 1 forum I've been being interested to visit, there is OraFaq. Smile

So, I've been being learnt so much from here, the most important thing is "Do not ask till you could not try any more by your self".

But, the worth important thing is "My English is still bad since near 7 years working as an DBA" Very Happy
Re: What NEW did you learn today in Orafaq [message #595386 is a reply to message #594913] Tue, 10 September 2013 14:25 Go to previous messageGo to next message
Michel Cadot
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Error logging in SQL*Plus

Regards
Michel
Re: What NEW did you learn today in Orafaq [message #599874 is a reply to message #595386] Tue, 29 October 2013 12:49 Go to previous messageGo to next message
Lalit Kumar B
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Resolving issues with making connection of SQL Developer with Oracle DB when the versions are quite old(last century) SQL Developer version 1.2.1 is able to connect to 8.1.7 with limited functionality

Regards,
Lalit
Re: What NEW did you learn today in Orafaq [message #601527 is a reply to message #599874] Thu, 21 November 2013 16:52 Go to previous messageGo to next message
BlackSwan
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you can turn off the listener log file by doing as below

LSNRCTL> SET LOG_STATUS OFF

I am not sure why this should ever be done; since you never know when the log file content might assist in debugging some future problem.
Re: What NEW did you learn today in Orafaq [message #603145 is a reply to message #601527] Wed, 11 December 2013 13:16 Go to previous messageGo to next message
BlackSwan
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new view?

SQL> desc V$DIAG_ALERT_EXT
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 ADDR                                               RAW(4)
 INDX                                               NUMBER
 INST_ID                                            NUMBER
 ADR_PATH_IDX                                       VARCHAR2(445)
 ADR_HOME                                           VARCHAR2(445)
 ORIGINATING_TIMESTAMP                              TIMESTAMP(9) WITH TIME ZONE
 NORMALIZED_TIMESTAMP                               TIMESTAMP(9) WITH TIME ZONE
 ORGANIZATION_ID                                    VARCHAR2(67)
 COMPONENT_ID                                       VARCHAR2(67)
 HOST_ID                                            VARCHAR2(67)
 HOST_ADDRESS                                       VARCHAR2(49)
 MESSAGE_TYPE                                       NUMBER
 MESSAGE_LEVEL                                      NUMBER
 MESSAGE_ID                                         VARCHAR2(67)
 MESSAGE_GROUP                                      VARCHAR2(67)
 CLIENT_ID                                          VARCHAR2(67)
 MODULE_ID                                          VARCHAR2(67)
 PROCESS_ID                                         VARCHAR2(35)
 THREAD_ID                                          VARCHAR2(67)
 USER_ID                                            VARCHAR2(67)
 INSTANCE_ID                                        VARCHAR2(67)
 DETAILED_LOCATION                                  VARCHAR2(163)
 UPSTREAM_COMP_ID                                   VARCHAR2(103)
 DOWNSTREAM_COMP_ID                                 VARCHAR2(103)
 EXECUTION_CONTEXT_ID                               VARCHAR2(103)
 EXECUTION_CONTEXT_SEQUENCE                         NUMBER
 ERROR_INSTANCE_ID                                  NUMBER
 ERROR_INSTANCE_SEQUENCE                            NUMBER
 MESSAGE_TEXT                                       VARCHAR2(2051)
 MESSAGE_ARGUMENTS                                  VARCHAR2(131)
 SUPPLEMENTAL_ATTRIBUTES                            VARCHAR2(131)
 SUPPLEMENTAL_DETAILS                               VARCHAR2(131)
 PARTITION                                          NUMBER
 RECORD_ID                                          NUMBER
 FILENAME                                           VARCHAR2(515)
 PROBLEM_KEY                                        VARCHAR2(67)
 VERSION                                            NUMBER
Re: What NEW did you learn today in Orafaq [message #603294 is a reply to message #603145] Fri, 13 December 2013 02:51 Go to previous messageGo to next message
ThomasG
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BlackSwan wrote on Wed, 11 December 2013 20:16
new view?

SQL> desc V$DIAG_ALERT_EXT


Trying to select from that view seems to generate a ORA-07445: exception encountered: core dump [__intel_new_memcpy()+52] [SIGSEGV] [ADDR:0x0] [PC:0x40CB644] [SI_KERNEL(general_protection)] [] in the alert log for me. Definitely something new that I learned. Laughing
Re: What NEW did you learn today in Orafaq [message #603565 is a reply to message #603145] Tue, 17 December 2013 07:13 Go to previous messageGo to next message
Michel Cadot
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You may be interested by Tanel Poder's article: Reading alert log via SQL

Re: What NEW did you learn today in Orafaq [message #603567 is a reply to message #603294] Tue, 17 December 2013 07:19 Go to previous messageGo to next message
Michel Cadot
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Quote:
Trying to select from that view seems to generate a ORA-07445: exception encountered: core dump [__intel_new_memcpy()+52] [SIGSEGV] [ADDR:0x0] [PC:0x40CB644] [SI_KERNEL(general_protection)] []


Yes there are many bugs in this view (and other V$DIAG ones) which lead to these errors depending on the query but they are fixed from to time along the patchsets (and the errors don't appear when you directly query the underlying x$ tables).
They are undocumented and expected to be queried only by ADRCI tool.

Re: What NEW did you learn today in Orafaq [message #606135 is a reply to message #603145] Mon, 20 January 2014 05:05 Go to previous messageGo to next message
Lalit Kumar B
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BlackSwan wrote on Thu, 12 December 2013 00:46
new view?

SQL> desc V$DIAG_ALERT_EXT
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 


I wonder where the other columns are? If I do desc on V$DIAG_ALERT_EXT :

SQL> desc V$DIAG_ALERT_EXT;
Name                       Type                        Nullable Default Comments 
-------------------------- --------------------------- -------- ------- -------- 
ADDR                       RAW(8)                      Y                         
INDX                       NUMBER                      Y                         
INST_ID                    NUMBER                      Y                         
ADR_PATH_IDX               VARCHAR2(445)               Y                         
ADR_HOME                   VARCHAR2(445)               Y                         
ORIGINATING_TIMESTAMP      TIMESTAMP(9) WITH TIME ZONE Y                         
NORMALIZED_TIMESTAMP       TIMESTAMP(9) WITH TIME ZONE Y                         
ORGANIZATION_ID            VARCHAR2(67)                Y                         
COMPONENT_ID               VARCHAR2(67)                Y                         
HOST_ID                    VARCHAR2(67)                Y                         
HOST_ADDRESS               VARCHAR2(49)                Y                         
MESSAGE_TYPE               NUMBER                      Y                         
MESSAGE_LEVEL              NUMBER                      Y                         
MESSAGE_ID                 VARCHAR2(67)                Y                         
MESSAGE_GROUP              VARCHAR2(67)                Y                         
CLIENT_ID                  VARCHAR2(67)                Y                         
MODULE_ID                  VARCHAR2(67)                Y                         
PROCESS_ID                 VARCHAR2(35)                Y                         
THREAD_ID                  VARCHAR2(67)                Y                         
USER_ID                    VARCHAR2(67)                Y                         
INSTANCE_ID                VARCHAR2(67)                Y                         
DETAILED_LOCATION          VARCHAR2(163)               Y                         
UPSTREAM_COMP_ID           VARCHAR2(103)               Y                         
DOWNSTREAM_COMP_ID         VARCHAR2(103)               Y                         
EXECUTION_CONTEXT_ID       VARCHAR2(103)               Y                         
EXECUTION_CONTEXT_SEQUENCE NUMBER                      Y                         
ERROR_INSTANCE_ID          NUMBER                      Y                         
ERROR_INSTANCE_SEQUENCE    NUMBER                      Y                         
MESSAGE_TEXT               VARCHAR2(2051)              Y                         
MESSAGE_ARGUMENTS          VARCHAR2(131)               Y                         
SUPPLEMENTAL_ATTRIBUTES    VARCHAR2(131)               Y                         
SUPPLEMENTAL_DETAILS       VARCHAR2(131)               Y                         
PARTITION                  NUMBER                      Y                         
RECORD_ID                  NUMBER                      Y                         
FILENAME                   VARCHAR2(515)               Y                         
PROBLEM_KEY                VARCHAR2(67)                Y                         
VERSION                    NUMBER                      Y 


If you want to know my DB version :

SQL> select * from v$version;
 
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE	11.2.0.2.0	Production
TNS for IBM/AIX RISC System/6000: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
Re: What NEW did you learn today in Orafaq [message #609145 is a reply to message #606135] Mon, 03 March 2014 04:20 Go to previous messageGo to next message
gazzag
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Location: Bristol, UK
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Courtesy of Michel, this is something I learned today:

Quote:

It is DBMS in French (Système de Gestion de Base de Données).


SGBD Smile
Re: What NEW did you learn today in Orafaq [message #609146 is a reply to message #609145] Mon, 03 March 2014 04:23 Go to previous messageGo to next message
Littlefoot
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Sounds like LBGT ./fa/1599/0/
Re: What NEW did you learn today in Orafaq [message #609150 is a reply to message #609146] Mon, 03 March 2014 04:30 Go to previous messageGo to next message
gazzag
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Location: Bristol, UK
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Laughing
Re: What NEW did you learn today in Orafaq [message #610076 is a reply to message #609150] Mon, 17 March 2014 06:53 Go to previous messageGo to next message
gazzag
Messages: 275
Registered: November 2010
Location: Bristol, UK
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Courtesy of John Watson:

orclz>
orclz> grant sysdba to rashu;
grant sysdba to rashu
                *
ERROR at line 1:
ORA-01917: user or role 'RASHU' does not exist


orclz> grant sysdba to rashu identified by <password>;

Grant succeeded.

orclz>


Edit: Toned down.

[Updated on: Mon, 17 March 2014 06:57]

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Re: What NEW did you learn today in Orafaq [message #610113 is a reply to message #610076] Mon, 17 March 2014 13:12 Go to previous messageGo to next message
John Watson
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Oh dear, Gareth, I shouldn't have posted that: it shows my age. That syntax for creating a user dates back to release 5 I think. Before we had proper roles and privileges.
Re: What NEW did you learn today in Orafaq [message #612225 is a reply to message #610113] Mon, 14 April 2014 10:47 Go to previous message
Lalit Kumar B
Messages: 1842
Registered: May 2013
Location: World Wide on the Web
Senior Member
Hats off to Solomon and Michel, you guys put up such rich information sometimes that it brings out something new for lot of folks...

Here is my take for today :

http://www.orafaq.com/forum/mv/msg/192388/612223/#msg_612223

I never thought of using the internal data type conversion as a tool to force and override Oracle for a weird requirement. Often saw the internal conversion only in tkprof output. Really learnt something new today.
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