11gr2

Leave a comment Posted on ASM, Oracle, Rman

Renaming datafiles in Oracle 11GR2 Asm

Introduction.

As part of Housekeeping job Dbas of all times have been creating tablespaces for the users and applications. During the lifecycle of an application objects will be created , deleted copy into temporary copies etc. In the end  storage used of a tablespace might look like a Swiss Cheese. Even though Oracle is smart enough to reuse the “wholes”  sometimes it is good housekeeping to reorganize  a tablespace by moving – recreating its objects in a new tablespace. Once such scenario has completed the old  tablespace  ( aka swiss cheese )  will be empty  so it could be tossed away. Or not  if the tablespace name is mandatory since Vendor scripts use hardcodes specific tablespace name.  Even though the dba might not like such ‘Fixed’ names  it is good to know  that Oracle  in 11G( my version is 11.2.03 on Linux ) offers the option to rename a tablespace. But  what will happen to the datafiles that are part of that tablespace ?

Below scenario is based on a great post I found on the web by  Frits Hoogland:  https://fritshoogland.wordpress.com/2012/07/23/rename-oracle-managed-file-omf-datafiles-in-asm/ .

In his Post Frits is offering two scenarios to do this action. Personally i favor the first once since it holds less risk. Oracle keeps track of the copied file and the old file and is dropping the old file during  the alter database datafile  rename ..  action whereas the second scenario means you will have to do some afterwork in asmcmd since the original ( old file ) remains in place ( since in rman a copy and switch to is done).

And as you can see , after all these years  (his post was written in 2012 ) still great input for the current scenario. Good posts are like good wine , they get better as they age.

Scenario:

Often on the web it is stated that you should not believe it just because it is printed. That is also what I did. To get a look and feel of the scenario let’s run a test scenario first.

## Creating a tablespace in an Asm diskgroup ( which will create the datafile as OMF).

SQL> create tablespace test1 datafile ‘+DATA’ size 100m;

Let’s see how the datafiles for this tablespace in the DATA diskgroup will look like:

SQL> select * from dba_data_files where tablespace_name = ‘TEST1’;

FILE_NAME                                                                                                                                             FILE_ID TABLESPACE_NAME                BYTES    BLOCKS STATUS    RELATIVE_FNO AUT   MAXBYTES  MAXBLOCKS INCREMENT_BY USER_BYTES USER_BLOCKS ONLINE_

—- — ———- ———- ———— ———- ———– ——-

+DATA/mydb1/datafile/test1.736.935381317                                                                                                              5 TEST1                       104857600     12800 AVAILABLE            5 NO          0        0           0  103809024    12672 ONLINE

 

Ok so we see that the datafile  is +DATA/mydb1/datafile/test1.736.935381317  at the moment.

In  the next step we will rename the tablespace:

SQL> alter tablespace test1 rename to test2;

Time to check if there has something changed under the hood now we have renamed the tablespace:

SQL> select * from dba_data_files where tablespace_name = ‘TEST2’;

FILE_NAME                                                                                                                                             FILE_ID TABLESPACE_NAME                BYTES    BLOCKS STATUS    RELATIVE_FNO AUT   MAXBYTES  MAXBLOCKS INCREMENT_BY USER_BYTES USER_BLOCKS ONLINE_

—- — ———- ———- ———— ———- ———– ——-

+DATA/mydb1/datafile/test1.736.935381317                                                                                                              5 TEST2                       104857600     12800 AVAILABLE            5 NO          0        0           0  103809024    12672 ONLINE

Not much of a surprise that the datafile is still  +DATA/mydb1/datafile/test1.736.935381317  so if we feel that there should be a 1:1 relation between datafiles  we need to take the extra mile to make it right.

In my first sqlplus session , issued this command:

SQL> alter tablespace TEST2 offline;

I am used  to work in multiple sessions on my linux sessions so I opened a second window sqlplus and started RMAN  and gave this command to copy   ( the old file) in the Diskgroup. This will create another OMF for this datafile  in the diskgroup  +DATA.

rman target /

RMAN> copy datafile ‘+DATA/mydb1/datafile/test1.736.935381317’ to ‘+DATA’;

Output of this action looked like this:

Starting backup at 08.02.2017 04:13:58

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=923 device type=DISK

channel ORA_DISK_1: starting datafile copy

input datafile file number=00005 name=+DATA/mydb1/datafile/test1.736.935381317

output file name=+DATA/mydb1/datafile/test2.733.935381641 tag=TAG20170208T041400 RECID=3 STAMP=935381644

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07

Finished backup at 08.02.2017 04:14:07

Starting Control File and SPFILE Autobackup at 08.02.2017 04:14:08

piece handle=/opt/oracle/product/11203_ee_64/db/dbs/MYDB1_c-2786503255-20170208-00 comment=NONE

Finished Control File and SPFILE Autobackup at 08.02.2017 04:14:15

With the output file name ( the new created file ) +DATA/mydb1/datafile/test2.733.935381641

I Moved back to my first screen and in sqlplus  issued this command:

SQL> alter database rename file ‘+DATA/mydb1/datafile/test1.736.935381317’ to ‘+DATA/mydb1/datafile/test2.733.935381641’ ;

After that last step to make is to take the tablespace online again:

SQL> alter tablespace test2 online;

Let’s check the datafile for the tablespace again now.

SQL> select * from dba_data_files where tablespace_name = ‘TEST2’;

FILE_NAME                                                                                                                                             FILE_ID TABLESPACE_NAME                BYTES    BLOCKS STATUS    RELATIVE_FNO AUT   MAXBYTES  MAXBLOCKS INCREMENT_BY USER_BYTES USER_BLOCKS ONLINE_

—- — ———- ———- ———— ———- ———– ——-

+DATA/mydb1/datafile/test2.733.935381641                                                                                                              5 TEST2                       104857600     12800 AVAILABLE            5 NO          0        0           0  103809024    12672 ONLINE

Now it is time for the real deal.

First let’s find out which datafiles are part of our Tablespace POOL_DATA ( which was renamed from POOL_DATA_REORG.

SQL> select file_id,file_name from dba_data_files where tablespace_name = ‘POOL_DATA’;

FILE_ID FILE_NAME

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

       41 +DATA/mydb1/datafile/pool_data_reorg.780.934704787

       42 +DATA/mydb1/datafile/pool_data_reorg.783.934705039

       43 +DATA/mydb1/datafile/pool_data_reorg.658.934705043

       44 +DATA/mydb1/datafile/pool_data_reorg.735.934705271

       45 +DATA/mydb1/datafile/pool_data_reorg.734.934705525

       46 +DATA/mydb1/datafile/pool_data_reorg.732.934705785

       47 +DATA/mydb1/datafile/pool_data_reorg.731.934706037

       48 +DATA/mydb1/datafile/pool_data_reorg.730.934706289

       49 +DATA/mydb1/datafile/pool_data_reorg.729.934706505

Time to take the tablespace offline after consulting with Vendor – Dba that there will be an agreed maintenance window to do these actions:

SQL> alter tablespace POOL_DATA offline;

Opened a second screen  and started an rman session.

rman target /

RMAN> copy datafile ‘+DATA/mydb1/datafile/pool_data_reorg.780.934704787’ to ‘+DATA’;

This showed this output in Rman

Starting backup at 08.02.2017 04:35:57

using channel ORA_DISK_1

channel ORA_DISK_1: starting datafile copy

input datafile file number=00041 name=+DATA/mydb1/datafile/pool_data_reorg.780.934704787

output file name=+DATA/mydb1/datafile/pool_data.736.935382959 tag=TAG20170208T043558 RECID=4 STAMP=935383461

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:08:25

Finished backup at 08.02.2017 04:44:23

Starting Control File and SPFILE Autobackup at 08.02.2017 04:44:24

piece handle=/opt/oracle/product/11203_ee_64/db/dbs/MYDB1_c-2786503255-20170208-03 comment=NONE

Finished Control File and SPFILE Autobackup at 08.02.2017 04:44:31

In sqlplus I issued the rename action using the above information:

SQL> alter database rename file ‘+DATA/mydb1/datafile/pool_data_reorg.780.934704787’ to ‘+DATA/mydb1/datafile/pool_data.736.935382959’;

And with the idea checking Is believing ,  in the alert log I saw this entry

Alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.780.934704787' to '+DATA/mydb1/datafile/pool_data.736.935382959'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.780.934704787

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.780.934704787' to '+DATA/mydb1/datafile/pool_data.736.935382959'

I like what I see! Working this way and performing the rename will automatically delete the old File in ASM for us!

If this would be the online datafile to be moved the next step would be to take the tablespace online again. ( In this case also as an extra check that we did not break anything).

SQL> alter tablespace POOL_DATA online;

Now let us check  the datafile(s) for the tablespace again:

SQL> select file_id,file_name from dba_data_files where tablespace_name = ‘POOL_DATA’;

   FILE_ID FILE_NAME

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

       41 +DATA/mydb1/datafile/pool_data.736.935382959

       42 +DATA/mydb1/datafile/pool_data_reorg.783.934705039

       43 +DATA/mydb1/datafile/pool_data_reorg.658.934705043

       44 +DATA/mydb1/datafile/pool_data_reorg.735.934705271

       45 +DATA/mydb1/datafile/pool_data_reorg.734.934705525

       46 +DATA/mydb1/datafile/pool_data_reorg.732.934705785

       47 +DATA/mydb1/datafile/pool_data_reorg.731.934706037

       48 +DATA/mydb1/datafile/pool_data_reorg.730.934706289

       49 +DATA/mydb1/datafile/pool_data_reorg.729.934706505

Ah that looks like one down ( one correct 8 More to go).

alter tablespace POOL_DATA offline;

Proceeded with the remaining 8 Datafiles and when doing  the rename step it was a good thing to see this below information in the Alert log:

Wed Feb 08 06:00:34 2017

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.783.934705039' to '+DATA/mydb1/datafile/pool_data.780.935384353'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.783.934705039

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.783.934705039' to '+DATA/mydb1/datafile/pool_data.780.935384353'

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.658.934705043' to '+DATA/mydb1/datafile/pool_data.755.935385209'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.658.934705043

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.658.934705043' to '+DATA/mydb1/datafile/pool_data.755.935385209'

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.735.934705271' to '+DATA/mydb1/datafile/pool_data.778.935384371'

Wed Feb 08 06:00:48 2017

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.735.934705271

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.735.934705271' to '+DATA/mydb1/datafile/pool_data.778.935384371'

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.734.934705525' to '+DATA/mydb1/datafile/pool_data.781.935385215'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.734.934705525

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.734.934705525' to '+DATA/mydb1/datafile/pool_data.781.935385215'

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.730.934706289' to '+DATA/mydb1/datafile/pool_data.762.935386865'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.730.934706289

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.730.934706289' to '+DATA/mydb1/datafile/pool_data.762.935386865'

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.729.934706505' to '+DATA/mydb1/datafile/pool_data.772.935386887'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.729.934706505

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.729.934706505' to '+DATA/mydb1/datafile/pool_data.772.935386887'

Wed Feb 08 06:01:30 2017

alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.732.934705785' to '+DATA/mydb1/datafile/pool_data.744.935386243'

Deleted Oracle managed file +DATA/mydb1/datafile/pool_data_reorg.732.934705785

Completed: alter database rename file '+DATA/mydb1/datafile/pool_data_reorg.732.934705785' to '+DATA/mydb1/datafile/pool_data.744.935386243'

All looked well so time to wrap up.

SQL> alter tablespace POOL_DATA online;

SQL> alter database backup controlfile to trace;

SQL> select file_id,file_name from dba_data_files where tablespace_name = ‘POOL_DATA’;

   FILE_ID FILE_NAME

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

                41 +DATA/mydb1/datafile/pool_data.736.935382959

                42 +DATA/mydb1/datafile/pool_data.780.935384353

                43 +DATA/mydb1/datafile/pool_data.755.935385209

                44 +DATA/mydb1/datafile/pool_data.778.935384371

                45 +DATA/mydb1/datafile/pool_data.781.935385215

                46 +DATA/mydb1/datafile/pool_data.744.935386243

                47 +DATA/mydb1/datafile/pool_data.732.935388425

                48 +DATA/mydb1/datafile/pool_data.762.935386865

                49 +DATA/mydb1/datafile/pool_data.772.935386887

 

Final check:

SQL> select TABLESPACE_NAME,status from dba_tablespaces order by 1 ;

TABLESPACE_NAME              STATUS

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

POOL_DATA                   ONLINE

POOL_IX                     ONLINE

SYSAUX                      ONLINE

SYSTEM                      ONLINE

TEMP                        ONLINE

TEST2                       ONLINE

TOOLS                       ONLINE

UNDOTBS1                    ONLINE

As always hope you had some happy reading this procedure.

 

Mathijs.

 

 

 

Leave a comment Posted on Oracle

(De)install Apex in 11GR2 challenge

Introduction

Recently two new databases set up had been checked by QA process and they did not make that check due to the fact that Apex was setup in the sysaux tablespace. Of course it is important to follow the standards so some  extra work  would be needed to pass  the checks . House rules state that for Apex installation a dedicated tablespace will be needed. Time to play and make things right with two scenarios.  Scenario 1 will be faulty installation with a deinstall and an install after. Scenario 2 will be an install( During which action noticed that Oracle text is a mandatory component that needs to be in place before install Apex). Below notes I have used  to investigate and fix the challenge. As always  Google is you friend when exploring such solutions.

Being curious by nature of course had to explore two approaches. Primarily installing a new part to an already existing database can be done with DBCA. As another option it is still a good challenge to see if you can do it yourself by using the command line too. Hmm does it still show that I grew up with Oracle 7.3.4 as a starters kit ?

Details

First lets explore if there is a current installation of Apex in place.

col  comp_name format a60
set lines 144
select COMP_NAME,status from dba_registry order by 1;

or

SELECT STATUS FROM DBA_REGISTRY
WHERE COMP_ID = 'APEX';

VERSION
------------------------------
3.2.1.00.12

Deinstall

As part of activities looked on  the Web and found below Blog.  Big Thank you to the author Matthias Hoys for documenting:

De-installing Apex in 11gr2

So in my case would have set Environment to Oracle 11gr2 and  move to the apex directory before  starting sqlplus .

cd /opt/oracle/product/11203_ee_64/db/apex/
sqlplus /nolog
connect / as sysdba
@/opt/oracle/product/11203_ee_64/db/apex/apxremov.sql
Once the scripts has completed check again:
SELECT STATUS FROM DBA_REGISTRY
WHERE COMP_ID = 'APEX';

no rows selected

Now let’s do it proper and create a dedicated tablespace for apex installation first:

create tablespace APEX datafile ‘+CRMMST_DATA01’ size 4096M autoextend off
EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT  AUTO UNIFORM SIZE 1M;

Note. If you settle for  uniform size tablespace, make sure your extend-size is big enough. I had the issue that install will fail  if extend size is too small (apex install will fail with  ORA-60019). Error Detail:

create table wwv_mig_forms (
*
ERROR at line 1:
ORA-60019: Creating initial extent of size 14 in tablespace of extent size 8

ORA-60019: Creating initial extent of size string in tablespace of extent size string
Cause: Creation of SECUREFILE segment failed due to small tablespace extent size.
Action: Create tablespace with larger extent size and reissue command.
## my ts was uniform size 64K when created dedicated ts. Recreated ts with uniform size 1M.

Install Apex manually  (with Oracle Text in place):

## make sure you are in this directory:
cd /opt/oracle/product/11203_ee_64/db/apex 
@/opt/oracle/product/11203_ee_64/db/apex/apexins apex apex temp /i/

Since more than one script will run, made sure to head to the Apex directory in my Oracle installation before running  the starting script in sqlplus.  My new created dedicated  tablespace apex  is part of  parameters needed. ( @apexins.sql tablespace_apex tablespace_files tablespace_temp images ).

 

Install Apex manually (with Oracle Text  not in place):

In case Oracle Text is not installed in the database, the apex install will complain about that. In such case you will have to install Oracle Text first.

Oracle Text:

cd /opt/oracle/product/11203_ee_64/db/ctx/admin
Start your sqlplus session and run:
spool /tmp/catctx.log
@catctx.sql CTXSYS SYSAUX TEMP NOLOCK;

Among the parameters username,tablespace to create objects into, temp, account status after install.

After that installed Apex:

## make sure you are in this directory:
cd /opt/oracle/product/11203_ee_64/db/apex 
@/opt/oracle/product/11203_ee_64/db/apex/apexins apex apex temp /i/

## check status :

SQL> SELECT STATUS FROM DBA_REGISTRY
WHERE COMP_ID = ‘APEX’;  2

STATUS
———–
VALID

## Another issue and blushing when in the end  turned out i had proper tablespace NOT in place. Ran the script with the parameters but the tablespace had not been created:

 

APPLICATION 4411 - APEX  - System Messages Set Credentials... begin * ERROR at line 1: 
ORA-04063: package body "APEX_030200.WWV_FLOW_API" has errors ORA-06508: PL/SQL: could not find program unit being called: 
"APEX_030200.WWV_FLOW_API" ORA-06512: at line 4 
## and did notice this package remained invalid even after remove part of apex. 
Solution: drop package htmldb_system; drop public synonym htmldb_system; 
Retry.

Mandatory Aftercare (last man standing).
Check for invalid objects and recompile them.
select owner ,object_name,object_type from dba_objects where  status <> ‘VALID’ order by 1,2;

@?/rdbms/admin/utlrp

and check again .

 

Happy reading,

 

Mathijs

 

Btw. Loved this post by one of the great bloggers in general and on this Apex  in particular :

Oracle-Base oracle-application-express-apex-4-2-installation

Leave a comment Posted on Oracle, Oracle Dba, Rac

What’s in a Name (renaming ASM Diskgroup in 11.2)

Introduction:

Once again  it showed that the old  quote .. what’s  in a name .. is still valid even in an Oracle 11.2.0.3.0 Oracle restart environment  so credits to William S. for that. Well  you might wonder where is he heading with the article with title like this again. Frankly i had set up an Oracle restart environment where during the Installation  you are asked about one ( or more )  Asm Disks to be added to a Diskgroup that will hold the Spfile of the ASM instance.  During that install i made a typo in the name of the Diskgroup and only noticed of course after finishing install.

I searched the Web and came across a real cool scenario which i have explored and guess what  it works !  Below you find the steps i have performed.   Environment was: 11.2.0.3 Enterprise Edition on Red  Hat Linux.

Details:

On the web  I found bloggers sharing the idea that you can indeed rename a diskgroup in 11gr2. The tool for that is on the OS level and is part of you GridInfrastructure software. So it could very well look pretty much like this:

 which renamedg
/opt/crs/product/11203_ee_64/crs/bin/renamedg

Anyhow i had a bit of a struggle with the syntax  but in the end this is the command that does the magic. Note first few attempts failed since  I did not add the asm_diskstring in the command line . Be wise and please use it in a modified if necessary way from the beginning:

 

Step 1 Preparations

As root i stopped the Oracle restart environment :

 ./crsctl stop has

Step 2 Renaming the Diskgroup

Syntax

renamedg phase=both dgname=DUMM_YDATA newdgname=DUMMY_DATA verbose=true asm_diskstring=’/dev/mapper/asm*p1′

As you can see i am renaming my diskgroup DUMM_YDATA to DUMMY_DATA  this way.

 

Output coming from that was :
NOTE: No asm libraries found in the system
Parsing parameters..
Parameters in effect:
Old DG name       : DUMM_YDATA
New DG name          : DUMMY_DATA
Phases               :
Phase 1
Phase 2
Discovery str        : /dev/mapper/asm*p1
Clean              : TRUE
Raw only           : TRUE
renamedg operation: phase=both dgname=DUMM_YDATA newdgname=DUMMY_DATA verbose=true asm_diskstring=/dev/mapper/asm*p1
Executing phase 1
Discovering the group
Performing discovery with string:/dev/mapper/asm*p1
Identified disk UFS:/dev/mapper/asm-spfile01p1 with disk number:0 and timestamp (33001295 453578752)
Checking for hearbeat...
Re-discovering the group
Performing discovery with string:/dev/mapper/asm*p1
Identified disk UFS:/dev/mapper/asm-spfile01p1 with disk number:0 and timestamp (33001295 453578752)
Checking if the diskgroup is mounted or used by CSS
Checking disk number:0
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for /dev/mapper/asm-spfile01p1
Modifying the header
Completed phase 2

Step 3 Where to find the Spfile for ASM in Grid Infra

 

With this first success it was time to move on to step 2. I modified the information in the cluster layer with this once i had looked up the exact name of the spfile with ASMCMD:

Syntax
srvctl modify asm  -p +DUMMY_DATA/asm/asmparameterfile/registry.253.843232019

 

Step 4 Restarted the Has deamon:

As Root:

 ./crsctl start has

 

Step 5 Final activities: Check and cleanup:

 

SQL> show parameter spfile


NAME               TYPE VALUE


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


spfile       string      +DUMMY_DATA/asm/asmparameterfile/registry.253.843232019




 


Checked also the information in the Cluster:




oracle@mysrvr10hr:/opt/oracle [+ASM]# crsctl status resource -t


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


NAME           TARGET  STATE        SERVER                   STATE_DETAILS


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


Local Resources


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


ora.DUMMY_DATA.dg


               ONLINE  ONLINE       mysrvr10hr


ora.DUMM_YDATA.dg


               ONLINE  OFFLINE      mysrvr10hr


ora.LISTENER.lsnr


               ONLINE  ONLINE       mysrvr10hr


ora.asm


               ONLINE  ONLINE       mysrvr10hr                 Started


ora.ons


               OFFLINE OFFLINE      mysrvr10hr


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


Cluster Resources


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


ora.cssd


      1        ONLINE  ONLINE       mysrvr10hr


ora.diskmon


      1        OFFLINE OFFLINE


ora.evmd


      1        ONLINE  ONLINE       mysrvr10hr


## checked in asmcmd


asmcmd


[Option  -p will be used ]


ASMCMD [+] > spget


+DUMMY_DATA/asm/asmparameterfile/registry.253.843232019




Ok last step, clean up since the cluster still knows about the Diskgroup with the wrong name:


srvctl remove diskgroup -g DUMM_YDATA


 


Mission completed and again a smiling dba here. Please Test before do !


 


Happy reading,


 


Mathijs

					

	
					



			
				



	
	


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Sending Mail from an 11G Oracle Database (UTL_SMTP)
	


			

			
Introduction


I have been asked to do the steps to send mail from inside an Oracle 11G. There is a lot of good notes about that already on the web which i used to get the picture and to get things done. Still to me this post offers a nice overview.


On the Linux level:


## I found this: smtp.mb-nl.internal.mycompany.com as mail server.


## By checking /etc/mail/sendmail.cf
## I found:
#DS[mi.mycompany.com]
DS[smtp.mb-nl.internal.mycompany.com]


## So that is my first clue


Below are the steps you will need to do in the database.


## In order to send mails in Oracle 11g you will need to take care of several steps.


## They are not default installed in the database (11g). You need to actually install the UTL_MAIL package.


sqlplus /nolog
connect / as sysdba
@?/rdbms/admin/utlmail.sql
@?/rdbms/admin/prvtmail.plb
grant execute on utl_mail to public;


## Next, add the address & port of the e-mail server (smtp server).


## Hint: If you do not do this, you will receive “ORA-06502: PL/SQL: numeric or value error” when you try to use the UTL_MAIL package.


## Execute the following with user SYS as SYSDBA:


alter system set smtp_out_server = smtp.mb-nl.internal.mycompany.com:25' scope=both;


## check what is out there in the database.


select * from dba_network_acls;


## Dropping same named access_control list if already existing.


BEGIN
   DBMS_NETWORK_ACL_ADMIN.DROP_ACL(
      acl => 'mail_access.xml');
END;
/


## Create an access control list:


BEGIN
   DBMS_NETWORK_ACL_ADMIN.CREATE_ACL (
    acl          => 'mail_access.xml',
    description  => 'Permissions to access e-mail server.',
    principal    => 'PUBLIC',
    is_grant     => TRUE,
    privilege    => 'connect');
   COMMIT;
END;
/


## Assign the list to the smtp ( mail server ).


## Note Default port is 25!


BEGIN
   DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL (
    acl          => 'mail_access.xml',
    host         => 'smtp.mb-nl.internal.mycompany.com',
    lower_port   => 25,
    upper_port   => 25
    );
   COMMIT;
END;
/


## This is an example to check if it is working:


CREATE OR REPLACE PROCEDURE send_mail (p_to        IN VARCHAR2,
                                       p_from      IN VARCHAR2,
                                       p_message   IN VARCHAR2,
                                       p_smtp_host IN VARCHAR2,
                                       p_smtp_port IN NUMBER DEFAULT 25)
AS
  l_mail_conn   UTL_SMTP.connection;
BEGIN
  l_mail_conn := UTL_SMTP.open_connection(p_smtp_host, p_smtp_port);
  UTL_SMTP.helo(l_mail_conn, p_smtp_host);
  UTL_SMTP.mail(l_mail_conn, p_from);
  UTL_SMTP.rcpt(l_mail_conn, p_to);
  UTL_SMTP.data(l_mail_conn, p_message || UTL_TCP.crlf || UTL_TCP.crlf);
  UTL_SMTP.quit(l_mail_conn);
END;


/The code below shows how the procedure is called.


 BEGIN
  send_mail(p_to        => 'mathijs.bruggink@mycompany.com',
            p_from      => 'oracle@mbnld33r.com',
            p_message   => 'This is a test message.',
            p_smtp_host => 'smtp.mb-nl.internal.mycompany.com');
END;
/


## After Feedback  that public indeed should be avoided in these matters this is the adepted example:


IF you set it up not for public but for dedicated users.

-- M Bruggink
-- Enabling  Mail functionality in Oracle
-- 20131024

spool 20131024.lst
connect / as sysdba;

@?/rdbms/admin/utlmail.sql
@?/rdbms/admin/prvtmail.plb
grant execute on utl_mail to public;

alter system set smtp_out_server = 'smtp.MB-nl.internal.MYCOMPANY.com:25' scope=both;

BEGIN
   DBMS_NETWORK_ACL_ADMIN.DROP_ACL(
      acl => 'mail_access.xml');
END;
/

--Create an access control list:
BEGIN
   DBMS_NETWORK_ACL_ADMIN.CREATE_ACL (
    acl          => 'mail_access.xml',
    description  => 'Permissions to access e-mail server.',
    principal    => 'SYS',
    is_grant     => TRUE,
    privilege    => 'connect');
   COMMIT;
 END;
/

-- Assign the list to the smtp ( mail server ):
-- Note Default port is 25!

BEGIN
   DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL (
    acl          => 'mail_access.xml',
    host         => 'smtp.MB-nl.internal.MYCOMPANY.com',
    lower_port   => 25,
    upper_port   => 25
    );
   COMMIT;
 END;
/
BEGIN
   DBMS_NETWORK_ACL_ADMIN.add_privilege (
    acl          => 'mail_access.xml',
    principal    => 'SYSTEM',
    is_grant     => TRUE,
    privilege    => 'connect');
   COMMIT;
 END;
/

BEGIN
   DBMS_NETWORK_ACL_ADMIN.add_privilege (
    acl          => 'mail_access.xml',
    principal    => 'SCOTT',
    is_grant     => TRUE,
    privilege    => 'connect');
   COMMIT;
 END;
/

BEGIN
   DBMS_NETWORK_ACL_ADMIN.add_privilege (
    acl          => 'mail_access.xml',
    principal    => 'ARNOLD',
    is_grant     => TRUE,
    privilege    => 'connect');
   COMMIT;
 END;
/
-- check the setup
COLUMN host FORMAT A30
COLUMN acl FORMAT A30

SELECT host, lower_port, upper_port, acl
FROM   dba_network_acls;

COLUMN acl FORMAT A30
COLUMN principal FORMAT A30
set lines 200

SELECT acl,
       principal,
       privilege,
       is_grant,
       TO_CHAR(start_date, 'DD-MON-YYYY') AS start_date,
       TO_CHAR(end_date, 'DD-MON-YYYY') AS end_date
FROM   dba_network_acl_privileges;
spool off


Useful notes in Mos:


NOTE:74269.1 – How to Test an SMTP Mail Gateway From a Command Line Interface


NOTE:130785.1 – How To Send E-mail Using UTL_SMTP


Happy reading,


Mathijs


 


 

					

	
					



			
				



	
	


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Food for thoughts Rac One a first Step to explore
	


			

			
Introduction.


Some months ago I have implemented an Active Passive Solution on Oracle 11gr2 for on one of the customers.  Basically this was almost reliving old days where  tools like HP MC Service Guard (using packages where one or more database and listener configurations are stored)  or  Veritas Clusterware  (where and Agent controls the status of the resources being a database and or a listener). They would  monitor  the health of the Database/Listener,  would stop and start the Database/ Listener. With the technology at hand at that point and time ( implemented 11.2.0.2 Grid Infra with ASM and 11.2.0.2 Rdbms )  it was not   having all the required   setups to implement anything else.  Now we are 9 months further in time,  standards have been adapted and we have latest Oracle version at hand ( being 11.2.0.3) so it is time for a fresh start. Besides that recently I have been asked to  implement the Active Passive solution on more environments (since it does cover  part off HA and it controls the monitoring  of the Database/ Instance  by HP-Openview).


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