Question about backup hot with Tablespace with no logging
Hi, we have an application that using a temporary tables (tables of work). The application maintains a persistent connection to the DB.During the loading of data, the application will create work tables and then remove it when the process is complete. This recommended by Oracle on this application is to create a tablespace separated with no record.
Here's the recommendation:
"To minimize the contention of disk and logging, you can create a tablespace with NoLogging for the.
work tables and indexes and store data files for storage on a physical disk separate.
Because work tables are created and dropped during the processing of data, creating a tablespace
without connect to work tables and the indexes of the working table can improve performance. »
I asked experts to demand that all agree to implement the above suggestion. However, our DBA is reluctant to implement the suggestion above that there are concerns about the validity of the hot backup. Here is his comment:
"The problem is that we cannot guarantee the recovery of this database unless recover us from a cold backup. This means that if there is something on this database which is important, we will have problems with data protection. "He said, not to apply any log will affect the ability to recover the database in the event of failure, even if tables work East of temporary tables only. His opinion is that, when the backup occur at the same time when the table is created, will result not valid backup. The only way to save the database must publish a cold backup, which means that we must stop the application to make the backup.
Is it true. What is the best backup strategy for the above case?
From the expert point of view of the application, cold backup is not necessary that the application does not maintain a persistent connection to the database.
Thank you.
If it's a temporary table only that is kept in storage space, in any case the data on their part would go, either at the end of the transaction or at the end of the session. Not sure that the data your dba trying to protect? I have yet to have my first cup of coffee then maybe missing me something obvious here, but I don't see a point in the protection of temporary tables and "cold backup to use for their recovery.
HTH
Aman...
Tags: Database
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What I will meet situations when I get a PDF file to client that must be changed. When they load in Acrobat Reader, it works fine. However if I load in Illustrator it asks me to point to the linked file. The question is how Acrobat Reader to open a PDF file and display a linked file when it is not incorporated? Why Illustrator cannot do the same?
It is more of a technical issue, but any information would be helpful. Thank you.
For the associated images, your PDF file contains a thumbnail image as well as the reference or the address of the actual image. Player will show this vignette. Now, you want to change the PDF in Illustrator, he wants to allow you to work on the actual image. That's why it asks you to point to the linked file.
HTH
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question about to_date combination with sql dynamic trim
I created:
CREATE TABLE test1
(birthday DATE NOT NULL)
PCTFREE 10
PCTUSED 40
INITRANS 1
MAXTRANS 255
TABLESPACE dnvk
STORAGE)
20480 INITIAL
NEXT 20480
PCTINCREASE 10
MINEXTENTS 1
MAXEXTENTS 99
)
/
Then I insert a line:
Insert into test1
values (sysdate);
Then I do the following in sql-navigator:
DECLARE
v_test VARCHAR2 (2000): = ' update test1 set anniversary = trim (to_date ("07/07/1937","DD-MM-YYYY" "))';
BEGIN
EXECUTE IMMEDIATE v_test;
commit;
END;
The result is: 07/07/1937
When I do the same thing in sql * more:
DECLARE
v_test VARCHAR2 (2000): = ' update test1 set anniversary = trim (to_date ("07/07/1937","DD-MM-YYYY" "))';
BEGIN
EXECUTE IMMEDIATE v_test;
commit;
END;
The result is the 07/07/2037
Someone at - it an idea what is the problem?Trim() accepts and returns the characters (see http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/functions199.htm#SQLRF06149), so my guess is that filling an internal conversion somewhere along the line.
Fact interesting, when I do:
select to_date(trim(to_date('07-07-1937', 'dd-mm-rrrr')), 'dd-mm-rr') from dual I get this: 07/07/2037
which is not what I expect to find.
select dump(trim(to_date('07-07-1937', 'dd-mm-rrrr'))) from dual gives Typ=1 Len=9: 48,55,45,74,85,76,45,51,55
So all I can say is: do not use trim to the dates.
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Question about iPhone 6s with charge time
I just got my iPhone 6 s more and I noticed that it takes 3 hours to recharge his battery from 0 to 100% using its official magazine, and while the power mode then is it the normal charge time for iPhone 6 s more?
Thanks in advance
you kill it if you run it to 0% before recharging
life lithium ion batteries is murdered by a such behaveiour read more
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