Issue in Complete Refresh of a Materialized View
Hello,
We have an MV in the Datawarehouse that does a FAST REFRESH daily. Every Saturday, a COMPLETE REFRESH is done as part of the normal Database Activities. The Database is Oracle 9i. The MV contains a Join between a Dimension and Fact Table of a Datawarehouse and does a FAST REFRESH using the MV logs.
However, last Sat, the COMPLETE REFRESH has failed. The DBA tried to run the script twice again but it failed on both occasions with an UNDO TABLESPACE error (ORA-30036). The DBA tried to extend the Tablespace; it did not help either.
- Could this be linked to Tablespace allocations for the MV? Are there any specific steps that can be followed to resolve this?
- Can the MV be dropped and re-created?
Would appreciate a response on the same.
Many Thanks,
Ketan
Hi Ketan,
I guess this is probably because MV complete refresh performs "delete" from the MV and then insert. If the MV is large, it may fail on undo allocation.
Please take a look at Re: materialized view refresh time! Plz Help me! you can see the explanation, metalink note and the solution (how to perform truncate instead of delete).
HTH
Liron Amitzi
Senior DBA consultant
[www.dbsnaps.com]
[www.orbiumsoftware.com]
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Hi,
Oracle DB version is 10.2.0.3
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Mat view creation script:
CREATE MATERIALIZED VIEW WCC_INTERNAL_SEARCH_M
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UPPER(addr.addr_line_two) addr_line_two,
UPPER(addr.addr_line_three) addr_line_three,
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DB is 10.2.0.3 -
Error while complete refresh of a materialized view
Hi All,
while refreshing a materialized view i m getting error
SQL> exec dbms_snapshot.refresh('supplier','C');
BEGIN dbms_snapshot.refresh('supplier','C'); END;
ERROR at line 1:
ORA-12008: error in materialized view refresh path
ORA-04030: out of process memory when trying to allocate bytes (,)
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ORA-06512: at "SYS.DBMS_SNAPSHOT", line 860
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 841
ORA-06512: at line 1
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Chandra Pabba -
Refresh Order Management Materialized Views errors out in R12.1.3
Hi All -
Refresh Order Management Materialized Views errors out in R12.1.3 when submitted with blank parameters. Please find below error details ..
OEXITORDMV module: Refresh Order Management Materialized Views
Current system time is 15-OCT-2012 11:30:29
**Starts**15-OCT-2012 11:30:29
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ORA
Start of log messages from FND_FILE
End of log messages from FND_FILE
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https://forums.oracle.com/forums/search.jspa?threadID=&q=ORA-01555&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
https://forums.oracle.com/forums/search.jspa?threadID=&q=ORA-01555+AND+Materialized+AND+View&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
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Hi All,
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EmployeeRoles.TO_DATE,
VoucherPatterns.rowid ACC_VOUCHER_PATTERNS_ROW_ID,
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Ledgers.rowid ACC_LEDGERS_ROW_ID,
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IncExcUnits.rowid INC_EXC_UNITS_ROW_ID,
EmployeeRoles.rowid BANK_EMPLOYEE_ROLES_ROW_ID,
ParentRoles.rowid PARENT_ROLES_ROW_ID,
Roles.rowid ROLES_ROW_ID,
Permissions.rowid PERMISSIONS_ROLES_ROW_ID,
RolesMemberships.rowid ROLES_MEMBERSHIPS_ROW_ID
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ACC_VOUCHERS Vouchers,
ACC_LEDGERS Ledgers,
BANK_EMPLOYEES Employees,
BANK_EMPLOYEE_INC_EXC_UNITS IncExcUnits,
BANK_EMPLOYEE_ROLES EmployeeRoles,
ROLES ParentRoles,
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IncExcUnits.INC_EXCLUD_TYPE != 'EXC') AND
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Intuitively before refreshing the MV it will return the data last placed on it,
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Why the fast refresh of a fast refreshable MV does not work fine while its complete refresh works good?
How ever after undoing made changes to those tables and issuing the fast refresh using the following command the MV will contain correct updated data:
call dbms_mview.refresh(list => 'WLS', method => 'F');
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I've tried to simulate the problem for a simpler query with simple tables containing some sample data but those don't have any problem.
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ThanksThanks Martin,
Finally I've discovered one of possible several situations in which a MV fast refreshed incorrectly.
This is happened when an OR condition exists among several AND conditions and at least one outer join symbol there exists!
this is the scenario:
-- create two sample tables
create table t as select 1 a, 2 b from dual;
create table j as select 1 a, 2 b from dual;
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alter table t add constraint tp primary key (a);
alter table j add constraint jp primary key (a);
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create materialized view log on j with primary key, rowid;
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select t.a, j.b, t.rowid tr, j.rowid jr from t,j where t.a = j.a(+)
and (t.b = j.b or t.a = t.b);
-- select through MV, the MV returns correct data
select * from mvt;
A B TR JR
1 2 AAAYwQAAEAAFhwzAAA AAAYwRAAEAAFhw7AAA
-- intentionally manipulate the data to the query returns no rows
update j set a = 2;
commit;
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select t.a, j.b, t.rowid tr, j.rowid jr from t,j where t.a = j.a(+)
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select * from mvt;
A B TR JR
1 2 AAAYwQAAEAAFhwzAAA AAAYwRAAEAAFhw7AAA
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call dbms_mview.refresh(list => 'MVT', method => 'F');
select * from mvt;
A B TR JR
1 null AAAYwuAAEAAFh2jAAA null
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select t.a, j.b, t.rowid tr, j.rowid jr from t,j where t.a = j.a(+)
and (t.b = j.b or t.a = t.b);
A B TR JR
1 null AAAYwuAAEAAFh2jAAA null
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select t.a, j.b, t.rowid tr, j.rowid jr from t,j where t.a = j.a(+)
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call dbms_mview.refresh(list => 'MVT', method => 'C');
select * from mvt;
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Is this a BUG?
Any suggestions? -
Refresh time for Materialized View
Hi,
I have created a materialized view and set it to refresh everyday at 4 am . When I check the status of the job , it shows the refresh timing between 20 mins to 4 hours . That means , some times it takes 20 mins to refresh , some times 40 , some time 2 hours and some times up to 4 hours. Any reason for the wide range ? Here is the query for the view.
CREATE MATERIALIZED VIEW BDS_COST_CATEGORY_MV
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STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "USERS"
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USING INDEX
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USING DEFAULT LOCAL ROLLBACK SEGMENT
DISABLE QUERY REWRITE
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SUM(NVL(AD.CURRENT_EXPENSE,0)) EXPENSE
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WHERE AC.ACCOUNT_MANAGER = AC_MGR.PERSONNEL_ID
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AND AH.PERIOD_ASR = AP.FISCAL_SYSTEM_PERIOD_CAL_YR_EQ||', '|| AP.FISCAL_YEAR
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Justin -
About Refresh Error In Materialized view
hi
i have
Oracle 9.2.0.1 at the windows server 2003
i have created some materialized view to use in my one web application running on tomcat
i have scheduling for refresh it using refresh utility available in oracle materialized view snapshot refresh
but when its try to run state of refresh become unusable and table according to it
remains empty
when i try to do it manually it gives error log
Ora-12008 error in materialized view refresh path
ora-01114 io error writing block to file 201(block #2621321)
ora-27069 skgfdisp:attmempt to do i/o beyond the range of file
osd-04026 invalid parameter passed(OS 2621327)
ora-01114 io error writing block to file 201(block#2621321)
ora-27069 skgfdisp:attempt do i/o beyond the range of the file
osd-04026 invalid parameter passed (OS 2621327)
ora 06512 at "SYS.DBMS_SNAPSHOt",line 794
ora 06512 at "SYS.DBMS_SNAPSHOt", line 851
ora 06512 at "SYS.DBMS_SNAPSHOt", line 832
ora 06512 at line 2
even i could not understand this error
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please help meI suspect one of your datafiles has exceeded the 4Gb windows limit. Your tablespace has probably been set to autoextend and this has created the problem. I am not sure what you can do at this point apart from recover from backup. I would open a TAR with Oracle Support as soon as possible to try and resolve this issue.
Please note: This forum is for OLAP issues only. If you need more information I would try posting on the database forum.
Keith Laker
Oracle EMEA Consulting
OLAP Blog: http://oracleOLAP.blogspot.com/
OLAP Wiki: http://wiki.oracle.com/page/Oracle+OLAP+Option
DM Blog: http://oracledmt.blogspot.com/
OWB Blog : http://blogs.oracle.com/warehousebuilder/
OWB Wiki : http://wiki.oracle.com/page/Oracle+Warehouse+Builder
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Hi,
Hope somebody can help me with this issue.
Some materialized views get status broken on refreshment, but only sometime. When I try to refresh them manually I get following message: "ORA-01400: cannot insert NULL into...". But I know for sure that there are no NULL values in the master table, MV and master tables are declared in the same way and all columns in master tables are NOT NULL columns. Another ting is that this error I get only on columns with data type CLOB.
Please, help!
/Juliahi,
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Here is a sample of xmltype field content:
RECID XMLRECORD
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Dear all,
I have created a Materialized View having a simple join between a Dimension and Fact Table of a Datawarehouse. The MV is REFRESH FAST ON DEMAND.
However, when a Partition Maintenance Operation (PMOP) was performed on the Master Tables, the MV failed to Refresh giving a ORA-32313 error.
As suggested on one of the troubleshooting websites, we did a complete refresh of the MV and fixed it temporarily. However, I would like to know the exact cause for this and would like to have a permanent fix for the same.
Can the DBA for this Database provide me the answers or are there some standard troubleshooting steps for the same?
Please let me know.
Best,
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Here are the answers to your questions.
1) Database is Oracle 9i.
2) We have a stored procedure to refresh the MV. The command is dbms_mview.refresh('SALES_FACT_MV','f'). It was working fine daily. Only after a PMOP was done on the Master Tables, it failed to refresh. We have also created indexes on some columns of the MV for performance improvement. We are getting a very good improvement.
3) We have MV logs for both Master Tables to store the incremental values.
4) We are not able to get the output from DBMS_MVIEW.EXPLAIN_MVIEW since this can be done only by the DBA. WIll update you once I have the info.
5) Same as Point 2.
Let me know if you need any further info.
Thanks, Ketan -
Refresh of a materialized view
Hi All!
I have a materialized view defined like:
CREATE MATERIALIZED VIEW v_ship_info_new
PCTFREE 5 PCTUSED 60
TABLESPACE DATA_BIG
STORAGE
INITIAL 32768K
MINEXTENTS 1
MAXEXTENTS UNLIMITED
USING INDEX STORAGE (INITIAL 2M NEXT 500K)
REFRESH START WITH ROUND(SYSDATE + 1) + 08/24
NEXT ROUND(SYSDATE + 2) + 08/24
AS
SELECT .....
The view was created on Sep.-13-2005. I expected that the view will be refreshed today at 08:00 AM, but the last_ddl_time in user_objects is Sep.-18-2005 and the data in the view is also from Sep.-18-2005. There is no time filter in SELECT statement. The view should shows a result of left outer join of two tables.
Any idea?
Thanks,
AndrejAndrej,
You should consider the NEXT interval relative to the last materialized view refresh. Reading your materialized view definition it results that:
- the materialized view was refreshed for the first time on 14-sep at 8:00 am (START WITH ROUND(SYSDATE + 1) + 08/24)
- the materialized view is then refreshed on 16-sep at 8:00 am, 18-sep at 8:00 am (ROUND(SYSDATE + 2) + 08/24)
Considering you have specified the START WITH clause in your command, the NEXT date should be considered starting from the timestamp of the last refresh and not from the moment of the materialized view creation.
Regards,
Adi -
Refresh Frequency of Materialized Views
Hi,
We have a bunch of materialized views in our database. They are set to be refreshed once in 6 hours when they were created. But now we would like to stop the automatic refresh and make them manual.
Is there a way to remove the refresh frequency on the materialized views so that they don't refresh automatically?
Your help is much appreciated.
Thanks.Hi,
try to alter MV
http://download.oracle.com/docs/cd/B13789_01/server.101/b10759/statements_2001.htm#CCHECCJB
regards, michael -
Oracle Materialized View replication
I am perplexed by the fact that I have a slave sight full of MV's and a refresh group created to refresh with the Master site.
When I refresh, however, the master site updates all of the tables (MV's) except one within my refresh group and all the changes I make on the MV site replicates to the Master site including this ONE MV.
Where the problem lies is that the one MV does not accept any changes from the Master??
Help!!Hello,
I'm sorry to answer you so late.
I could find an interesting Notes on My Oracle Support which gives a solution to this problem.
Please, have a look on the following Notes:
Complete refresh of a materialized view fails with ORA-02266 [ID 270456.1]In fact, you may have to add another MV to the Refresh Group so as to avoid the Truncate operation during the Refresh.
If possible, you may also try a Fast Refresh (there's no Truncate in this case), but you'll need MV Log.
Hope this help.
Best regards,
Jean-Valentin
Edited by: Lubiez Jean-Valentin on May 19, 2010 11:44 PM -
I have read the documentation. I know you can specify options such as 'with primary key' and/or 'with rowid' when creating a materialized view log. Also, that you can specify to include additional columns in the log -and that these can then be seen in the MLOG$ table that gets created. But I don't know why or in what circumstances you'd specify the one or the other, or include columns or not. Can anyone give some example scenarios where you'd do one or the other?
Hello again,
The fundamental reason (why you would specify primary key and/or ROWID) is to facilitate fast refreshes (as opposed to a complete refresh) of the materialized view -- a lot will depend on the MV query itself, and whether one or both of primary key & ROWID are needed, i.e., if there's a COUNT(*) involved, where the primary key would play a role, or without such an aggregate, the ROWID will be necessary (in any case) for fast refresh.
Edited by: SeánMacGC on Jul 9, 2009 5:54 PM
If you run the utlxmv.sql script in $ORACLE_HOME/rdbms/admin, that will create the MV_CAPABILITIES_TABLE, which when you create an MV and execute DBMS_MVIEW.EXPLAIN_MVIEW('your_mview') will populate that with what that MV is capable of, i.e.,
SQL> desc mv_capabilities_table;
Name Null? Type
STATEMENT_ID VARCHAR2(30)
MVOWNER VARCHAR2(30)
MVNAME VARCHAR2(30)
CAPABILITY_NAME VARCHAR2(30)
POSSIBLE CHAR(1)
RELATED_TEXT VARCHAR2(2000)
RELATED_NUM NUMBER
MSGNO NUMBER(38)
MSGTXT VARCHAR2(2000)
SEQ NUMBER
SQL> select capability_name, possible from mv_capabilities_table;
CAPABILITY_NAME P
PCT N
REFRESH_COMPLETE Y
REFRESH_FAST N
REWRITE N
PCT_TABLE N
REFRESH_FAST_AFTER_INSERT N
REFRESH_FAST_AFTER_ONETAB_DML N
REFRESH_FAST_AFTER_ANY_DML N
REFRESH_FAST_PCT N
REWRITE_FULL_TEXT_MATCH N
REWRITE_FULL_TEXT_MATCH N
REWRITE_PARTIAL_TEXT_MATCH N
REWRITE_PARTIAL_TEXT_MATCH N
REWRITE_GENERAL N
REWRITE_GENERAL N
REWRITE_PCT N
PCT_TABLE_REWRITE N
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