Dear All,
query rewrite doesn't work on materialized view if based on a regular view
which contains joins and coorelated subquery.
Got the the following message:
QSM-01063: query has a dictionary table or view
QSM-01019: no suitable materialized view found to rewrite this query.
I create a
Hi,
Anybody knows how Oracle determine the materialized view eligible for
textmatch or general rewrite?
TIA
Chuan
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Hi, All
Wondering whether anyone created indexes on materialized view to further
improve the performance? What's the pros and cons of this method?
Thanks in advance.
Chuan
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DABs,
Is there any way in my connection to get the sid and serial# for my own
connection?
Suppose I connect to Oracle db by sqlplus scott/[EMAIL PROTECTED]
In this connection,
SQL
What shoud I input to get this sid and serial#?
TIA
Chuan
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Thanks all for the input.
the script is select sid,serial# from v$session where sid=(select sid from
v$mystat where rownum=1)
But the user need select access to v$mystat
Chuan
-Original Message-
Sent: Friday, 29 August 2003 15:19
To: Multiple recipients of list ORACLE-L
Hi Chuan,
Thanks, Chao Zhu.
Since the query column in user_mviews is long data type, when I select
query from user_mview, I can only see part of select statement. Even set
linesize doesn't help.
One more, what I want is to compare two select statements in querie
column. But with query long data type, I
Hi, All,
Is there any data dictionary in Oracle to check out creation statements of
materialized view? Something like the user_source view about object
creation. I have checked user_mviews, user_mview_joins, etc, but I haven't
got one.
TIA
Chuan
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Hi, All,
When an unique constraint is violated, is there any way to know which record
cause this problem?
TIA,
Chuan
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Dear all,
Are there articles or good examples to show how to
populate the dimension and fact table in Dimensional(star) data model?
Especially the time dimension.
TIA
Chuan
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the corresponding format on windows?
Your input is precious,
TIA
Chuan
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on it.
Many thanks in advance.
Chuan
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Dear DBA gurus,
Has anyone got such experience when export database in full mode but exclude a
particular user?
TIA,
Chuan
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could not see
some SQL statements in v$sqlarea where they were there before.
TIA
Chuan
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Hi, DBA Guru,
I have a stored procedure of a package which is called with execute immediate in
a loop with runtime input parameters. I found that no. of parse calls(451983) is
equal to no. of executions (451982). Is there any way such as set
cursor_sharing=force or keep this stored
Dear ALL,
Is there any way to see the currently running SQL in one session? I used
v$open_cursor, but there might be many SQL statements, I don't know which one is
currently running. And more, if I execute a stored procedure, which SQL statements
could be seen in v$open_cursor?
Any
Hi, All,
Is there any way to find out the parameters setting in session level? These
parameters are not the initialization parameters.
For example, if alter session set use_stored_outlines=true; how could I find out the
use_stored_outlines value later on?
TIA
Unless otherwise stated,
Further to this question, I found another interesting thing. The results between
ol$hints of outln and user_outlines are inconsistent after I swap the outline
names(bad sql and tuned name). User_outlines's name didn't reflect the swapping.
Is there something wrong?
Thanks
Chuan
Yes, But how could I ensure offensive statements in outline exactly
matching the incoming statements?
Thanks
CHuan
-Original Message-
Sent: Tuesday, 10 September 2002 6:58 PM
To: Multiple recipients of list ORACLE-L
Chuan,
If I remember right, you're supposed to turn the outlines
Hi, All,
I created a plan as follows:
create or replace outline hsubstr_vchfilename
on select /*+ full(test) parallel(test, 10) */ max(num_sequencel) + 1 from test
where substr(filename,1,3)='AAA';
And I got the following outlines:
OL_NAME
Hi, All,
From Oracle Doc: if the SQL text of the incoming statement exactly matches the SQL
text in an outline in that category, then Oracle considers both texts identical, and
Oracle uses the outline. Oracle considers any differences a mismatch.
How could I ensure the incoming SQL text
Hi, All,
I'll drop a table in production DB. I wnder whether there is a way to find the
dependent object on this table beforehand.
Thanks in advance.
Chuan
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Chuan Zhang
Chuan.Zhang@transTo: Multiple
Hi DBAs,
Is there any way to get the same execution statistics between the finished sql
statement and interrupted sql statement?
Supposed table A have ten million rows.
If select A.a, A.b from A where ..., in sqlplus session, actually the returned could
be millions. I could not wait for all
Thanks all the responses.
It's the syntax error like Naveen said. Oracle didn't detect the error, it just simply
ignore the hints if the syntax is wrong.
Thanks again,
Chuan
-Original Message-
Sent: Friday, 30 August 2002 5:33 PM
To: Multiple recipients of list ORACLE-L
If you
Hi, All,
On a million row table, test, there is primary key on column a.
when I run select /*+ index (test,indx_a) */ a, b, c, from test, according to Oracle,
I should get the following explain plan.
TABLE ACCESS
BY INDEX ROWID test 1
INDEX
UNIQUE SCAN PK_test 1
But I acctucally got :
Hi, Madhavan,
Thanks very much for your invaluable input.
Chuan
-Original Message-
Sent: Saturday, 24 August 2002 5:46 AM
To: Multiple recipients of list ORACLE-L
Hi Chuan,
Just wonder whether analyze table name estimate statistics
generates the stats at partition level. But for
Hi, ALL,
What is the difference between dbms_utility and dbms_stats in terms of
statistics gathering?
Any clues would be much appreciated.
Chuan
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this
Hi, ALL,
Sorry if this one is posted more than once.
What is the difference between dbms_utility and dbms_stats in terms of
statistics gathering?
Any clues would be much appreciated.
Chuan
Unless otherwise stated, this e-mail does not represent the views of
TransACT Communications Pty
Hi, All,
Just wonder what's tool or methodology you are using to select materialized view in
Oracle data warehouse environment?
Many thanks in advance,
Chuan
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Thanks Chaos for your invaluable information.
Chuan
-Original Message-
Sent: Thursday, 8 August 2002 7:34 PM
To: Multiple recipients of list ORACLE-L
Chuan Zhang£¬
hi, go to $ORACLE_HOME/rdbms/admin, ls sp*, you will find the sqls that needed
by statspack. and vi spdoc.txt
Hi, DBAs,
Could anyone recommend a good unix solaris discussion/news group for me?
Thanks,
Chuan
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Dear all,
I want to prepare my self for oracle 9i upgrade exam . Much appreciated If anyone can
tell me any sites or books for the preparation of this exam,
Regards
Chuan
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Fat
this happens? or is there any dict view to check the job
queue?
Thanks in advance,
Chuan
Oracle DBA
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warehousing especially ETL process?
Many thanks in advance,
Chuan
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, but it will more
difficult to manage.
Tom Cox may have something to add to this, as he was
leading that evaluation.
Tom?
Jared
Chuan Zhang [EMAIL PROTECTED]
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DBA gurus,
I am just curious about what the performance tuning and monitoring
tools you are using besides OEM. Your sharing is highly appreciated.
Chuan Zhang
Oracle DBA
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Fat
at all. I want to do it
again to get the space back. Is there any way to speed up this process?
Platform: Oracle EE8.0.6 and Solaris 2.7
Thanks a lot in advance.
Chuan
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Dear all,
I have this problem. When connect internal
or connect /as sysdba in svrmgrl, it gives me insufficient priviledge. I
connect it locally instead of remotly. I have not set up any password file or os
authentication. It works well last week and suddenly happens today when I want
to
Dear DBA gurus,
Could I ask you about the following
questions:
What are the benifits of having a support
contract?what are the issues withnot having a support contract or what the
risks do I have to take without the Support?Whatis it covering? I
mean, Does it cover issues involved in our
Hi, DBA gurus,
Recently, I will archiving some big tables. How to find free space under
HWM for a table?
Thanks,
Chuan
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Hi, DBAs,
I got this problem.Some of the
kept packages including sys.standard in the shared pool are unkept. This makes
the shared pool fragmented. I have no idea what the cause is. Do you
happend to know the reason for this? If I re-kept these packages in
off-working time withoutbounce
, June 04, 2001 5:00 PM
Subject: Re: Which SQL is executing
SELECT T.SQL_TEXT FROM V$SQLTEXT T,V$SESSION S
WHERE S.SQL_ADDRESS=T.ADDRESS ORDER BY T.PIECE;
Sam
- Original Message -
From:
Chuan
Zhang
To: Multiple
recipients of list ORACLE-L
Hi All,
From v$open_cursor, I know every SQL opened
and parsed in one session. Is there any way to know which SQL is running. Or put
another way, canall the SQLs in one session be sorted in timing order
dynamically?
Any clue would be much appreciated.
Chuan
Hi, DBAs,
I think that I might ask a simple
question but I have been confused sometimes for a long time. Could someone help
me to clarify these?
First, is " v$session.paddr=v$process.addr"
the only way to join these two tables"
Second,I am confused about the Username,
Osuser in
Hi, All,
Could someone help me to figure outthe
meaning of "data block" contention in "Buffer busy wait statistics" section in
utlbstat/utlestat report.txt or "data block" class in v$waitstat?
Thanks very much in advance.
Chuan
ubscribing).
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Hi, DBAs,
I want to build a duplicate DB of the
production DB using the hot backups without RMAN.
Redo online log files are not included in the hot
backups according to Oracle recommendation.
The control file is modified tosuit for the
new host configuration. When I log into svrmgrl and
quot;.
Could anyone help me out?
Thanks,
Chuan
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