Vrf routes into global route table

Dear All
I am stuck with a design I am trying to come up with for our EDGE network and looking for ideas from the community.
It is similar to what is described here:
http://www.cisco.com/en/US/docs/solutions/Enterprise/Network_Virtualization/ServEdge.html#wp86450http://www.cisco.com/en/US/docs/solutions/Enterprise/Network_Virtualization/ServEdge.html#wp86904
In short we have a multi-context FWSM at 2 sites creating an EDGE network, each site operate independently. The sites are linked internally in a single routing domain using OSPF. Each of the outside networks are in seperate VRFs, single-tier model.
I need to find a way to:
1) link the 2 sites (currently is done with a GRE tunnel between the site vrfs, looking at replacing this with mp-bgp and l3vpn encapsulation)
2) redistribute routes from each of the vrf into the common global route table (running ospf)
1 is working nicely with mp-BGP peer between the sites and routes distributed between, however I am stuck on how to achieve 2.
The only way I can see is to change the global route table to a vrf, then use rt import/export. This is commonly described as shared services. When I did that I got stuck with how to do the BGP peering as the loopback I was using for the peering is inside the new vrf.
Basically I want dynamic routing from the global route table to learn routes from each of the sites vrf. Then if a particular site's vrf is unavailable, it can pick up the other site's route.
Am I missing something here? The document linked makes it sound incredibly easy yet I am struggling with how to implement it.
Any advice is much appreciated

Hello philip,
It is really hard to help you, if you do not provide topology where you would like to implement these changes, so just some thoughts to your points:
2) redistribute routes from each of the vrf into the common global route table (running ospf)
You can use PE - CE design. VRFs are terminated on PE with all routes you need in respective VRFs. On PE, MP-BGP routes are redistributed into respective VRF's OSPF process . PE is connected with CE via separate physical interface for each VRF or you can use one physical interface with dedicated sub-interface for each VRF. PE is peering with CE using OSPF. All routes end up in CE global routing table.
Problems with this design ->
- for each VRF you have to create separate OSPF process on PE and CE, also OSPF process ID has to be unique on PE for each VRF. Also OSPF process ID has to match to establish OSPF neighborship between PE-CE, so on CE you will have to redistribute OSPF routes from each process to your main OSPF process.
other workarounds ->
1) instead OSPF you will use as peering protocol BGP between PE-CE, but you still have to redistribute BGP routes to OSPF on CE
2) you will use different PE to redistribute each VRF -> BGP routes will be redistributed from VRF into OSPF (same process ID as your main OSPF ID). Routes will be advertised via OSPF into CE global routing table.
You will use on PE per VRF to redistribute routes into OSPF with same process ID as your main process ID. Thanks to different PEs, you can have same OSPF process ID, all these PEs will peer with same CE via OSPF.
I hope I made my thoughts understandable, cause its quite hard to explain
When I did that I got stuck with how to do the BGP peering as the loopback I was using for the peering is inside the new vrf.
This should not be a problem. You can have same IP on all VRF and also global table, so peering can still be done. After BGP routes are exchanged you can leak prefixes from one vrf to another or into global table as you need.
Best Regards
Please rate all helpful posts and close solved questions

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Loop Cursor Fetch Insert Rows Into Global Temporay Table

Hi friends,
I want to know there where is the problem in my this query
cursor c1 is select empno
from scott.emp;
b number;
begin
open c1;
     loop
     fetch c1 into b;
     exit when c1%notfound;
insert into scheema.a1
(a)
values
(b);
commit;
     end loop;
     close c1;
end;
There is no any error displaying while proceeding this query but the table a1 which is (Global temporary table with ON COMMIT PRESERVE ROWS option enabled) does not gets any records. Kindly let me know the problem.
Regards.

Are you sure that the query returns date? Are you checking the table via the same session?
SQL> create global temporary table a1 (
a number)
on commit preserve rows
Table created.
SQL> declare
   cursor c1 is select empno
      from scott.emp;
   b number;
begin
   open c1;
   loop
      fetch c1 into b;
      exit when c1%notfound;
      insert into a1
      (a)
      values
      (b);
      commit;
   end loop;
   close c1;
end;
PL/SQL procedure successfully completed.
SQL> select * from a1
         A
      7369
      7499
      7521
      7566
      7654
      7698
      7782
      7788
      7839
      7844
      7876
      7900
      7902
      7934
14 rows selected.

Insert slow into Global Temporary Table...

I am working with a stored procedure that does a select into a global temporary table and it is really slow. I have read up on the append hint and know that it is not a solution since GTT's are in the temporary table space which are thus always appended and never have logs.
Is there something else that I need to know about performance for GTT? I find it hard to believe that Oracle would find it acceptable to take 50 seconds to insert 3300 rows.

My apologies in advance as my skill level with Oracle is not as high as I would like for this type of analysis and remediation.
I had thought of it being the select as well but if I run it by itself it takes about 1 second. The interesting part is when I explain plan on it with the Insert, the SQL plan changes.
Here is the Non-insert explain plan:
<code class="jive-code jive-java">
Plan hash value: 3474166068
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 51 | 8 (38)| 00:00:01 |
| 1 | HASH GROUP BY | | 1 | 51 | 8 (38)| 00:00:01 |
| 2 | VIEW | VM_NWVW_1 | 1 | 51 | 7 (29)| 00:00:01 |
| 3 | HASH UNIQUE | | 1 | 115 | 7 (29)| 00:00:01 |
| 4 | NESTED LOOPS | | | | | |
| 5 | NESTED LOOPS | | 1 | 115 | 6 (17)| 00:00:01 |
| 6 | NESTED LOOPS | | 1 | 82 | 5 (20)| 00:00:01 |
| 7 | SORT UNIQUE | | 1 | 23 | 2 (0)| 00:00:01 |
| 8 | TABLE ACCESS BY INDEX ROWID| PEAKSPEAKDAYSEG$METERMASTER | 1 | 23 | 2 (0)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | IDX_PDSEG$MTR_SEGID | 1 | | 1 (0)| 00:00:01 |
|* 10 | TABLE ACCESS BY INDEX ROWID | FC_FFMTR_DAILY | 1 | 59 | 2 (0)| 00:00:01 |
|* 11 | INDEX RANGE SCAN | FC_FFMTRDLY_IDX10 | 2461 | | 2 (0)| 00:00:01 |
|* 12 | INDEX UNIQUE SCAN | FC_METER_PK | 1 | | 0 (0)| 00:00:01 |
| 13 | TABLE ACCESS BY INDEX ROWID | FC_METER | 1 | 33 | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
9 - access("SM"."SEGID"=584)
10 - filter(TO_DATE(TO_CHAR("V"."MEASUREMENT_DAY"),'YYYYMMDD')>=TO_DATE(' 2002-01-01 00:00:00',
'syyyy-mm-dd hh24:mi:ss') AND TO_DATE(TO_CHAR("V"."MEASUREMENT_DAY"),'YYYYMMDD')<TO_DATE(' 2003-01-01
00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND ("V"."ADJUSTED_TOTAL_VOLUME"<>0.0 OR
ROUND("V"."ADJUSTED_TOTAL_ENERGY",3)<>0.0))
11 - access("V"."METER_NUMBER"="SM"."METER_ID")
12 - access("M"."METER_NUMBER"="V"."METER_NUMBER")
</code>
Here is the Insert explain plan:
<code class="jive-code jive-java">
Plan hash value: 4282493455
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | INSERT STATEMENT | | 39 | 2886 | | 7810 (1)| 00:01:34 |
| 1 | LOAD TABLE CONVENTIONAL | PEAKDAY_TEMP_CONSECUTIVEVALUES | | | | | |
| 2 | HASH GROUP BY | | 39 | 2886 | | 7810 (1)| 00:01:34 |
|* 3 | HASH JOIN RIGHT SEMI | | 39 | 2886 | | 7809 (1)| 00:01:34 |
| 4 | VIEW | VW_NSO_1 | 1 | 10 | | 2 (0)| 00:00:01 |
| 5 | NESTED LOOPS | | 1 | 27 | | 2 (0)| 00:00:01 |
|* 6 | INDEX UNIQUE SCAN | PK_PEAKSPEAKDAYSEG | 1 | 4 | | 0 (0)| 00:00:01 |
| 7 | TABLE ACCESS BY INDEX ROWID | PEAKSPEAKDAYSEG$METERMASTER | 1 | 23 | | 2 (0)| 00:00:01 |
|* 8 | INDEX RANGE SCAN | IDX_PDSEG$MTR_SEGID | 1 | | | 1 (0)| 00:00:01 |
| 9 | VIEW | PEAKS_RP_PEAKDAYMETER | 3894 | 243K| | 7807 (1)| 00:01:34 |
| 10 | SORT UNIQUE | | 3894 | 349K| 448K| 7807 (1)| 00:01:34 |
| 11 | NESTED LOOPS | | | | | | |
| 12 | NESTED LOOPS | | 3894 | 349K| | 7722 (1)| 00:01:33 |
| 13 | TABLE ACCESS FULL | FC_METER | 637 | 21021 | | 18 (0)| 00:00:01 |
|* 14 | INDEX RANGE SCAN | FC_FFMTRDLY_IDX11 | 6 | | | 10 (0)| 00:00:01 |
|* 15 | TABLE ACCESS BY INDEX ROWID| FC_FFMTR_DAILY | 6 | 354 | | 12 (0)| 00:00:01 |
Predicate Information (identified by operation id):
3 - access("METER_ID"="METER_ID")
6 - access("GS"."SEGID"=584)
8 - access("SM"."SEGID"=584)
14 - access("M"."METER_NUMBER"="V"."METER_NUMBER")
filter(TO_DATE(TO_CHAR("V"."MEASUREMENT_DAY"),'YYYYMMDD')>=TO_DATE(' 2002-01-01 00:00:00', 'syyyy-mm-dd
hh24:mi:ss') AND TO_DATE(TO_CHAR("V"."MEASUREMENT_DAY"),'YYYYMMDD')<TO_DATE(' 2003-01-01 00:00:00', 'syyyy-mm-dd
hh24:mi:ss'))
15 - filter("V"."ADJUSTED_TOTAL_VOLUME"<>0.0 OR ROUND("V"."ADJUSTED_TOTAL_ENERGY",3)<>0.0)
</code>
As you can see there is a real spike in the cost and yet the only thing that was done was the addition of the Insert to GTT. From what I can ascertain the solution may be in an alternate SQL or finding some way to push Oracle into running the query as it would have for the first execution (non-insert).
I tried creating a simple view out of the SELECT statement to see if that would precompile it but in the end it ran exactly the same way.
The next thing that I am going to try is removing the PEAKS_RP_PEAKDAYMETER view by going more direct.
I have not done the trace file analysis yet. Should I still do that?

Inserts into Global Temporary Table

I'm working on using a global temporary table in one of my apps. I have a small test run here to isolate the problem. It simply creates the global temporary table, inserts a row, commits and then does a select to see if the insert worked. No data shows in the table when running this. I don't know much about global temp tables, so any help would be appreciated.
CREATE GLOBAL TEMPORARY TABLE AGENT_SILO.AS_TEMP_VALIDATE (
SBI_EMPLOYEE_ID NUMBER,
CURRENT_FLAG char(1),
EFFECTIVE_START date,
EFFECTIVE_END date
) ON COMMIT DELETE ROWS;
INSERT INTO AGENT_SILO.AS_TEMP_VALIDATE(SBI_EMPLOYEE_ID, CURRENT_FLAG, EFFECTIVE_START, EFFECTIVE_END)
VALUES(0, '', SYSDATE, SYSDATE);
commit;
SELECT * FROM AGENT_SILO.AS_TEMP_VALIDATE;

So I wonder what else I'm doing wrong that's really obvious. Here's what i'm trying to accomplish and maybe there's a better way of going about it.
I have a trigger that is supposed to do some validation before the insert is allowed to go through. So here's my approach. I have a trigger fired when there's an insert into the AS_Employee_history table. This passes some of the fields from this insert into a proc (the id, a flag and a couple of dates). Within the proc, i create a global temp table, insert these passed values into the temp table. Then I have a cursor to basically copy the rows from the as_employee_history table that have the same id. Then I can do some selects on the temp table to see if it passes the validation.
I have outputs throughout for debugging and it gets to right after the inserts into the temp table, then the rest of the code doesn't appear to be executed. So it looks like it's failing at the execution of select statements on the temp table. Anything else obvious that I"m missing here?
Here's my proc.
PROCEDURE "PAS_VALIDATE" (STATUS OUT VARCHAR2, v_status OUT BOOLEAN, NEW_SBI_EMPLOYEE_ID IN NUMBER,
NEW_CURRENT_FLAG IN CHAR, NEW_EFFECTIVE_START IN DATE,
NEW_EFFECTIVE_END IN DATE)
IS
v_prev_effective_end date;
v_flag_count number;
v_flag_count_date number;
--variables to store dynamic sql returns
v_sql_flag_count_date varchar2(255);
v_sql_flag_count varchar2(255);
v_sql_prev_eff_end varchar2(255);
cursor c_row is
select * from AGENT_SILO.AS_EMPLOYEE_HISTORY EMP
where (EMP.SBI_EMPLOYEE_ID = NEW_SBI_EMPLOYEE_ID);
r_row c_row%ROWTYPE;
BEGIN
Status := 'Started';
v_status := true;
DBMS_OUTPUT.PUT_LINE('Creating temporary table...');
execute immediate 'CREATE GLOBAL TEMPORARY TABLE AGENT_SILO.AS_TEMP_VALIDATE (
SBI_EMPLOYEE_ID NUMBER,
CURRENT_FLAG char(1),
EFFECTIVE_START date,
EFFECTIVE_END date
) ON COMMIT PRESERVE ROWS';
     DBMS_OUTPUT.PUT_LINE('Validating the data...');
     --DBMS_OUTPUT.PUT_LINE('Inserting submitted row into temp table');
--Insert the new row being submitted from user into the temp table
execute immediate 'INSERT INTO AGENT_SILO.AS_TEMP_VALIDATE(SBI_EMPLOYEE_ID, CURRENT_FLAG, EFFECTIVE_START, EFFECTIVE_END)
VALUES(' || NEW_SBI_EMPLOYEE_ID || ',
''' || NEW_CURRENT_FLAG || ''',
to_date(''' || to_char(NEW_EFFECTIVE_START, 'mm/dd/yyyy hh:mi:ss') || ''', ''mm/dd/yyyy hh:mi:ss''),
to_date(''' || to_char(NEW_EFFECTIVE_END, 'mm/dd/yyyy hh:mi:ss') || ''', ''mm/dd/yyyy hh:mi:ss''))';
--Insert the other rows to we end up with a subset of the employee history table
--with only rows that match the sbi_employee_id of the submitted row
     --DBMS_OUTPUT.PUT_LINE('Inserting into temp table...');
open c_row;
loop
fetch c_row into r_row;
exit when c_row%NOTFOUND;
execute immediate 'INSERT INTO AGENT_SILO.AS_TEMP_VALIDATE(SBI_EMPLOYEE_ID, CURRENT_FLAG, EFFECTIVE_START, EFFECTIVE_END)
VALUES(' || r_row.SBI_EMPLOYEE_ID || ',
''' || r_row.CURRENT_FLAG || ''',
to_date(''' || to_char(r_row.EFFECTIVE_START, 'mm/dd/yyyy hh:mi:ss') || ''', ''mm/dd/yyyy hh:mi:ss''),
to_date(''' || to_char(r_row.EFFECTIVE_END, 'mm/dd/yyyy hh:mi:ss') || ''', ''mm/dd/yyyy hh:mi:ss''))';
end loop;
close c_row;
DBMS_OUTPUT.PUT_LINE('After inserts');
-----Store queries to determine values for validation--------------------------
v_sql_prev_eff_end := 'SELECT to_char(max(effective_end), ''dd-mon-yy'')
FROM AGENT_SILO.AS_TEMP_VALIDATE
where to_char(EFFECTIVE_END, ''dd-mon-yy'') != ''31-dec-99'' AND
SBI_EMPLOYEE_ID = NEW_SBI_EMPLOYEE_ID';
--Find the largest effective_end, besides the 9999 value
execute immediate v_sql_prev_eff_end into v_prev_effective_end;
DBMS_OUTPUT.PUT_LINE('The highest previous end date: ' || v_prev_effective_end);
--...........Validation testing...........
execute immediate 'DROP TABLE AGENT_SILO.AS_TEMP_VALIDATE'; --Drop temp table
DBMS_OUTPUT.PUT_LINE('Validation Procedure Complete');
COMMIT;
status:='Success';
EXCEPTION
When Others Then
ROLLBACK;
Status := SQLERRM;
END;
Thanks a bunch for helping a noob out.

Sharing global routing table with vrf for intra-as traffic

We have a network block of 10.201.0.0/16 which is divided into two subnet 10.201.0.0/18 and 10.201.192.0/18. We are getting a internet feed for each subnet.
10.201.192.0/18 is in global routing table, and 10.201.0.0/18 is in a vrf-lite green.
I am thinking doing the following:
...........HUB
VL199/....\VL198
SPOKE1 SPOKE2
Hub and spoke are from perspective of vrf green.
For vrf green in the HUB:
ip route vrf green 10.201.0.0 255.255 255.192 vlan 199
ip route vrf green 10.201.64.0 255.255.255.192 vlan198
SPOKE1
ip route 0.0.0.0 0.0.0.0 vlan199
SPOKE2
ip route 0.0.0.0 0.0.0.0 vlan198
Suppose we already get the 2 internet feeds to HUB route with vrf green and global routing table. This should get vrf green going.
But we also have global routing table on the HUB router.
We would like to have 10.201.0.0/16 communicating with each other, and only keep internet default separated.
How should we get to 10.201.0.0/18 from global routing table and how should we get to 10.201.192.0/18 from SPOKE[12]?

In my lab, I have 2 ports configured.
int gi1/2
ip vrf forward green
ip address 10.201.192.253 255.255.255.252
int gi1/1
ip address 10.201.192.254 255.255.255.252
ip route 10.201.0.0 255.255.192.0 gi1/2
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Global Temporary table is Not working For Pdf Reports

Hi all
we are using oracle db-10g, developer suite-10g.
While generating the Report for the satisfying several conditions we are fetching the data into
Global temporary table
On commit preserve rows
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Thank you

query and view are not possible
here i am giving one of the requirement
my project is belongs to inventory project.
report should be generated on the different selection criteria like
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I am writing some code to import data into a warehouse from a CPU grid which computes risk data. Due to the fact a computing grid is used there will be many clients which can load the data concurrently and at any point in time.
Currently the import uses Binding in OCCI and chunking with a prepared statement to import the data into a global temporary table in a staging area after which a stored procedure is called within the same session which will process the data and load the data into a star schema.
The GTT has the advantage that if any clients have issues no dirty data will be left and each client only sees their own instance of the data.
I have been looking at using direct path loading to increase the performance of the load and have written some OCI code to perform the same task. I have manged to import the data into a regular heap based table using the OCI direct path apis. However when I try and use the same code to import against a Global Temporary Table I get an OCI Error (ORA-00600: internal error code, arguments: [6979], [16], [1], [1318528], [], [], [], [], [], [], [], [])
I get error when the function OCIDirPathPrepare is executed. The same issue occurs in both OCI and OCILib.
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Looking at the table USER_OBJECTS I can see that for a Global Temporary Table the DATA_OBJECT_ID is null. Does this mean that it is impossible to us a direct path load into Global Temporary Tables ?
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Thanks
H
Edited by: 813640 on 19-Nov-2010 11:08

Replying to my own message in case anyone else is interested.
I have now managed to successfully load data using direct path into a global temporary table with OCI. There appears to be no reason why this approach will not work.
I loaded data into the temporary table and then issued a select count(*) on the table from within the session and from a new session. The results were as expected.
The resaon for the ORA-006000 error was due to the fact that I had enabled table level parallel loading
ie
OCIAttrSet((dvoid *) context, (ub4) OCI_HTYPE_DIRPATH_CTX, *(ub1) 1*, (ub4)0, (ub4) OCI_ATTR_DIRPATH_PARALLEL, errhp)
When loading a Global Temporary Table the OCI_ATTR_DIRPATH_PARALLEL attribute needs to be zero
This makes sense, since the temp table does not have any partitions so it would not be possible to write in parallel to multiple paritions.
Edited by: 813640 on 22-Nov-2010 08:42

How can I Improve the Performance using Global Temo Tables ??

Hi,
Can anyone tell me , How can i make use of Global Temporary Tables to improve the Performance.
I have few sample scripts ,
Say i have the View based on some Complex query like ,
CREATE OR REPLACE VIEW Profile_values_view AS
SELECT d.Profile_option_name, d.Profile_option_id, Profile_option_value,
u.User_name, Level_id, Level_code
FROM Profile_definitions d, Profile_values v, Profile_users u
WHERE d.Profile_option_id = v.Profile_option_id
AND ((Level_code = 'USER' AND Level_id = U.User_id) OR
(Level_code = 'DEPARTMENT' AND Level_id = U.Department_id) OR
(Level_code = 'SITE'))
AND NOT EXISTS (SELECT 1 FROM PROFILE_VALUES P
WHERE P.PROFILE_OPTION_ID = V.PROFILE_OPTION_ID
AND ((Level_code = 'USER' AND
level_id = u.User_id) OR
(Level_code = 'DEPARTMENT' AND
level_id = u.Department_id) OR
(Level_code = 'SITE'))
AND INSTR('USERDEPARTMENTSITE', v.Level_code) >
INSTR('USERDEPARTMENTSITE', p.Level_code));
Now i have created the Global temp Table as ,
CREATE GLOBAL TEMPORARY TABLE Profile_values_temp
Profile_option_name VARCHAR(60) NOT NULL,
Profile_option_id NUMBER(4) NOT NULL,
Profile_option_value VARCHAR2(20) NOT NULL,
Level_code VARCHAR2(10) ,
Level_id NUMBER(4) ,
CONSTRAINT Profile_values_temp_pk
PRIMARY KEY (Profile_option_id)
) ON COMMIT PRESERVE ROWS ORGANIZATION INDEX;
Now I am Inserting the Records into Temp table as
INSERT INTO Profile_values_temp
(Profile_option_name, Profile_option_id, Profile_option_value,
Level_code, Level_id)
SELECT Profile_option_name, Profile_option_id, Profile_option_value,
Level_code, Level_id
FROM Profile_values_view;
COMMIT;
Now what my doubt is, when do i need to execute the Insert Statement.
Say , if the View returns few millions of records , then loading such a data into Global Temporary table takes lot of time.
Then what is the use of Global Temporary tables and how can i improve the Performance using the same.
Raj

Thanks for the responce ,
There are 2 to 3 complex views in our database, and there always be more than 5000+ users will be workinf on the application and is OLTP application. Those complex views are killing the application performance.
I what i felt was, if i create the Global Temporary tables for thow views and will be able to load the one third million of records returned by the views in to cache and can improve the application performance.
I have created the Global Temporary tables for 2 views with the option On Commit Preserve , But after am inserting the records into the Temp table and when i Issue the commit statement, the Temp table is getting Cleared.
I really got surpised of this behaviour as i know that with the Option On Commit Preserve , the rows should retain in the Temp Table, Instead , it's getting cleared.
Pelase suggest , what to do ??
Raj

Can you SELECT INTO a temporary table?

I was wondering if you can do this and what the syntax would be. I tried to SELECT INTO GLOBAL TEMPORARY TABLE and it didn't work.

If you are looking to Create a GTT, load data into it and then be able to select from the GTT after createion, you'll need to remember to preserve the rows after a commit e.g.:
create global temporary table gtemp on commit preserve rows as select * from tab;
However, your question is a bit on the vague side as to EXACTLY what you are wanting to do.
As an addendum
It didn't work is a completely useless statement without telling us how you know it didn't work
Message was edited by:
JS1

Performance issue with Oracle Global Temporary table

Hi
Oracle version : 10.2.0.3.0 - Production
We have an application in Java / Oracle. Users request comes in XML and oracle parser parses it and inserts it into Global temporary tables and then Business Stored procedure picks data from these GTT's and do the required processing.
in the end data required response data is again inserted into response GTT's from which Response XML is generated.
Question : Is the use of Global temporary tables in Oracle degrades performance as we have large number of GTT's in our application approx. 5-600 such tables.
Regards,
Vikas Kumar

Hi All,
Here is architecture of my application:
Java application creates XML from the screen values and then inserts that XML
into a framework(separate DB schema) table . then Java calls a Stored Procedure from same framework DB and in SP we have following steps.
1. It fatches XML from the XML type table and inserts XML into screen specific XML TYPE table in the framework DB Schema. This table has a trigger which parses XML and then inserts XML values into GTT which are created in separate product schemas.
2. it calls Product SP and then in product SP we have business logic. Product SP
does the execution and then inserts response into Response GTT.
3. Response XML is created by using XML generation function and response GTT.
I hope u will understand my architeture this time and now let me know if GTT are good in this scenario or not. also please not that i need data in GTT only during execution and not after that. i dont want to do specific delete which i have to do if i am using normal tables.
Regards,
Vikas Kumar

Global Temporary table and REDO

Dear Friends,
In my production database we are facing problem of excessive redo generation. After initial analysis, we realised that we are using a lot global temporary tables for storing temp data/calculations and they are generating redo.
I know that GTT doesn’t create redo but as it creates UNDO and undo is protected by redo therefore it creates some redo but lesser than normal table.
Solution:
I google and found that if I use direct path insertion (using APPEND hint) into Global temporary table the I can avoid this redo generation as specified in this link (http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:15826034070548)
I tried this solution in my GTT but its not making any difference with APPEND clause. Please check following results. Could you please guide me if I am doing something wrong or any other way to avoid redo on GTT.
JM@ORA10G>insert into JM_temp values(1,'aaaaaaaaaaaaaaaaaaaaaaa');
1 row created.
Elapsed: 00:00:00.00
Execution Plan
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | INSERT STATEMENT | | 1 | 100 | 1 (0)| 00:00:01 |
Statistics
0 recursive calls
2 db block gets
1 consistent gets
0 physical reads
*280 redo size*
918 bytes sent via SQL*Net to client
967 bytes received via SQL*Net from client
6 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
1 rows processed
JM@ORA10G>rollback ;
Rollback complete.
JM@ORA10G>insert * into JM_temp values(1,'aaaaaaaaaaaaaaaaaaaaaaa');
1 row created.
Elapsed: 00:00:00.00
Execution Plan
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | INSERT STATEMENT | | 1 | 100 | 1 (0)| 00:00:01 |
Statistics
0 recursive calls
2 db block gets
1 consistent gets
0 physical reads
*280 redo size*
917 bytes sent via SQL*Net to client
981 bytes received via SQL*Net from client
6 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
1 rows processed

Hi,
I tried avoiding GTT in my code but I realised that they are so tightly integrated that i cannot remove them. Operations which I am perfroming on my GTT are
1. Insertion of data
2. Fetch data from main tables with joins on GTT
3. Update GTT with calculated values.
My understanding it Update steps are generating maximum redo.
Please help me how can i reduce my redo generation in such scenarios.
Thanks.

Global Temporary Table - Nulls Returned.

Hello,
I have written a search, which has one text box and scans across many different fields in a table. If you have multiple search terms separated by commas, I look for the results to have BOTH. The same would apply for even more search terms.
To accomplish this I do the following:
-- 1.) split the string with function, receive array of search terms.
-- 2.) LOOP: Open Loop and move to first element of Array.
-- 3.) find individual term (array element) in table (fields in question use CONTEXT indexing).
-- 4.) Place list of results (PK) into Global Temporary table.
-- 5.) Move to next array position.
-- 6.) Repeat steps 3,4,5 until array is exhausted
-- 7.) END LOOP:
-- 8.) select PK list having COUNT(*) = # of terms in array.
-- 9.) Select data from main table where pk in (list of terms from temp table).
The procedure works fine in PL/SQL Developer and Toad. The results are reliable and accurate.
When we try to run this through JDeveloper - we have problems. Either we get a return set of "NULL", or we get odd results that imply that the search has run through only one term of the two.
We have researched this and setAutoCommit off.
I am reaching out for suggestions on additional things which might be interfering with the Java connection, before I attempt to place a support call to Oracle.

Not sure were can help you as this its a complicated use case which can't be rebuild easily by us.
Still, you should medium your jdev version and how you call the pl /sql function which produces three results in the global Temp table.
Can you please explain when exactly you get null or funny results?
I have worked with temp take a while back and had no such issues.
Timo

VRF Best Practice: LAN only VRF, Mgmt VRF, Global Routing table or VRF?

I am setting up a routed LAN (not a WAN) environment on two 6500 switches (sup-720). My goal is to create 32 routed environments separated by logical firewalls (multi-context ASA's). So I want a âcoreâ router in each environment, and don't want to buy 32 pairs of 6500's-sorry Cisco.
Each of these environments are tied together by a core routing environment, running on the same pair of 6500's. No WAN MPLS is going on and I am trying to use VRF for each of the routed environments core router. The management functions of the 6500 shall run off the VRF Core router and ip range (the one that ties all the other VRF's together. Here is a simple diagram:
VRF1
||
FW1
||
VRFCOR
||
FW2
||
VRF2
So to go from VRF1 to VRF2, you traverse two firewalls and VRFCOR.
Several questions related to this design:
1) Am I nuts to use VRF's in this application?
2) Is there a better choice than VRF's to do what I want?
3) Should VRFCOR be the global routing table (IOW, not a VRF)? Or should be its own VRF? Another way to ask this is: Shall a router ever run entirely in VRF tables, or should there be at least one global table in use?
4) Are there problems with any management protocols on a VRF, such as NTP, AAA, SNMP, LOGGING, TELNET? Or have all those been worked out?
5) Any other suggestions?
TIA, Will

VRF is suited for such kind of an application. Refer to URL http://cisco.com/application/pdf/en/us/guest/netsol/ns171/c649/ccmigration_09186a0080851cc6.pdf to get an idea about the

Redundant access from MPLS VPN to global routing table

Several our customers have MPLS VPNs deployed over our infrastructure. Part of them requires access to Internet (global routing table in our case).
As I'm not aware of any methods how to dynamicaly import/export routes between VRF/Global routing tables, at the moment there are static routes configured - one inside VRF pointing to global next hop, another one in global routing table, pointing to interface inside VRF.
Task is to configure redundant access to Internet. By redundancy I mean using several exit points (primary and backup), what physically represents separate boxes.
Here comes tricky part - both global static routes (on both boxes, meaning) are valid and reachable in all cases - no matter if specific prefix is reachable in VRF or not. What I'd like to achieve is that specific static route becomes valid only if specific prefix is reachable inside VRF. Yea, sounds like dynamic routing :), I know
OK, hope U got the idea. Any solutions/recommendations ? Running all Internet routing inside VRF isn't an option, at least for now :(

Hi Andris,
I did not mean to have a VRF on the CE. The CE would have both PVCs in the global routing table - his ONLY routing table in fact. One PVC would be used to announce routes into the customer specific VPN (VRF configured on the PE). The other PVC would allow for internet access through the PE (global IP routing table on the PE).
dot1q will be ok as well.
This way the CE can be a normal BGP peer to the PE, i.e. there is no MPLS VPN involved here. This allows all options of customer-ISP connectivity.
Example:
PE config:
interface Serial0/0
encapsulation frame-relay
interface Serial0/0.1 point-to-point
description customer VPN access
ip vrf customer
ip address 10.1.1.1 255.255.255.252
interface Serial0/0.2 point-to-point
description customer Internet access
ip address 192.168.1.1 255.255.255.252
router rip
address-family ipv4 vrf customer
version 2
network 10.0.0.0
no auto-summary
redistribute bgp 65000 metric 5
router bgp 65000
neighbor 192.168.1.2 remote-as 65001
address-family ipv4 vrf customer
redistribute rip
CE config:
interface Serial0/0
encapsulation frame-relay
interface Serial0.1 point-to-point
description VPN access
ip address 10.1.1.2 255.255.255.252
interface Serial0.2 point-to-point
description Internet access
ip address 192.168.1.2 255.255.255.252
router bgp 65001
neighbor 192.168.1.1 remote-as 65000
router rip
version 2
network 10.0.0.0
no auto-summary
Of course you can replace RIP with whatever is suitable for you. And don´t sue me when you do not apply required BGP filters for internet access... ;-)
The other option ("mini internet") would be feasible as well. Just make sure your BGP filters are NEVER messed up and additionally apply a limit on the numbers of prefixes in your VRF mini-internet.
Regards
Martin

Vrf routes into global route table

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