I've just found out that 12cR1 will not (in all likelihood) allow "flashback database" for pluggable DBs. Am I the only one disappointed by that ? I use flashback db (+replay) a lot to revert and replay automated tests and I had plans to consolidate tenths of test environments into PDBs.
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We've all heard the news about the new 12c capability to have a container database hosting multiple pluggable database instances.
This obviously will provide significant reduction in overhead on systems (like Exadata) where we'd like to host multiple databases, but can't consolidate them due to conflicts that prevent them running under the same instance (public synonyms / dblinks, schema name collision, etc). Not to mention the effort required to get different application databases to co-exist on the same DB instance ... which in and of itself can be a major project.
My question - does the container database need to have the same character set as the pluggable databases?
If not, this still presents a limitation, as there are numerous vendors of COTS applications that don't (or won't) support ALT32UTF8, which is what we're building all our bespoke applications on.
I have the task to migrate the total databases(Exact copy to be moved to another server).The current server is going for format.After I did the following steps I am getting the tablespaces(databases)-4 sizes same ,but I am facing issue like some default tablespaces i.e temp,system are not matching.
temp tablespace
***************
current server - 4.0(approximately)
Migrating server - 160 MB
System tablespace
*****************
current server - 580 MB
Migrating server - 220 MB
Also I checked the tables are also matching for the 4 databases.Also Provide the solution or method which is correct.
steps done for migrating(By me)
********************************
EXPORTING DATA USING DATAPUMP
*********************************
1 From command prompt MKDIR 'c:oraclexeapp mp';
2 From SQL prompt conn system/kotak;
3 create or replace directory dmpdir as 'c:oraclexeapp mp';
4 grant read,write on directory dmpdir to kotak;
5 From command prompt
expdp system/kotak@xe full=Y directory=dmpdir dumpfile=xe.dmp logfile=expdpxe.log;
IMPORTING DATA USING DATAPUMP
*****************************
in another server machine
1 From SQL prompt conn system/kotak;
2 create or replace directory dmpdir as 'c:oraclexeapp mp';
3 grant read,write on directory dmpdir to kotak;
4 From command prompt set ORACLE_SID=xe;
5 impdp system/kotak@xe full=Y directory=dmpdir dumpfile=xe.dmp logfile=impdpxe.log;
IN OUR PROCESS we created the below tablespaces and user before IMPORTING created 4 tablespaces
1. kotak
2. kotakdb
3. wired_data
4. ferrari
Created Users which are there in 219 server
1. KOTAK
2. KOTAKDB
3. FC_80
4. DEMOINTERNETBANK
5. DEMOINTERNETBANKDB
6. CREDITCARD
I would like to know about oracle 12c. In 12c, when i read documents,i understood that one container DB(CDB) can contain upto 253 pluggable DB and this pluggable DB(PDB) is similar to our traditional database(pre 12c).
1) whether my existing database (11.2.0.3) can be upgraded as pluggable DB and plugged it in CDB?
2)i read that we can move from local data center model to cloud in this version. Is that mean that once PDB is ready, whether we can plug it in CDB using private cloud or public also possible?
3)If public cloud is possible, are both CDB and PDB accessed through cloud client only?If so, whether our user data that is available under PDB also moved to external place?
I have used FLASHBACK TABLE option in my oracle 10g database.
It works successfully but the indexes got system generated name after flashback table option.
how i get all the indexes with same name which was before flashback.
Can I use flashback in application, especially DBMS_FLASHBACK.TRANSACTION_BACKOUT. I import some information (from files) in my database and after that I want to revert that transaction(delete imported data). I did some test I took xid of the transaction from v$transaction and then executed
DBMS_FLASHBACK.TRANSACTION_BACKOUT
with that XID for parameter. Everything is fine but that time there was only one transaction, when there are many transaction how can I get the exact XID. I can use dbms_transaction.local_transaction_id to get information for transaction which is running. And when i tried to use flashback that way a deadlock occur and db killed the other transaction.
I heard about flaskback data archive. can i get some short example to understand in practical way
View 11 Replies View RelatedI'am using Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit with the following:
db_flashback_retention_target 1440
undo_management AUTO
undo_retention 900
Is it possible to enable flashback only to some specific tables?
For example, we are only interested in the capability of flashback tables scott.emp and scott.dept, no more.
I fired following commands .
>create table t1(id number);
>create index indx_t1 on t1(id);
>drop table t1;
>flashback table t1 to before drop;
but when i fired
>select index_name , table_name from dba_indexes where table_name='T1';
it shows index name something like "BIN$QvTWVG3dTxmBBJ607f9CWQ==$0" so is their any way to recover that index name
one of my user POM create one table using this statement
12:55:59 SQL> create table hello_world (emp_id number(4), emp_name varchar2(30))
;
Table created.
then insert some raw into this hello_world table
12:56:41 SQL> insert into hello_world values (1, 'Bill Gates');
1 row created.
12:57:51 SQL> insert into hello_world values (2, 'Steve Jobs');
1 row created.
13:00:32 SQL> insert into hello_world values (3, 'Chris Eaton');
1 row created.
13:01:19 SQL> commit;
Commit complete.
then i have drop this hello_world table
13:02:08 SQL> drop table hello_world;
Table dropped.;
then i have to connect with sys user
13:03:03 SQL> conn sys as sysdba
Enter password:
13:08:21 SQL> select current_timestamp from dual;
CURRENT_TIMESTAMP
---------------------------------------------------------------------------
13-MAY-11 01.10.21.691000 PM +05:30
[code].....
i flashback my this HELLO_WORLD table but why i cannot Flashback RAW of this table .what can i do if i want to flashback raw of this table which query i have to run,
Since tablespaces can be enabled/disbaled for flashback is there a query that can tell me the flashback status of each tablespace in my DB.
View 2 Replies View RelatedI need store history for two tables in my system. I thought that Flashback Data Archive will be the best option. There is also another ways to do this but don't focus on this. I need to to this by FDA (Flashback Data Archive);
So my prerequisite was to create tablespace and flash back archive, and alter table to be archived.
create tablespace audit_archive datafile 'd:oradata etaaudit_archive.ora' size 100M;
create flashback archive audit_flash_archive
tablespace audit_archive quota 10G retention 10 year;
alter table teta_admin.t_prac flashback archive audit_flash_archive;
and everything works fine but on sys user.
i can query this table using "as of timestamp" clause
select prac_id, imie, imie_2, nazwisko, nr_ew from teta_admin.t_prac as of timestamp to_timestamp('2011-08-23 08:20:00','yyyy-mm-dd hh24:mi:ss')
but final construction of idea was to create additional user (interface), grant select on teta_admin.t_prac object and query archive data from interface user. and this is point of my failure. this don't work on new user.
interface user have such sys privs:
SQL> SELECT * FROM dba_sys_privs
2 WHERE grantee = 'INTERFACE';
GRANTEE PRIVILEGE ADM
------------------------------ ---------------------------------------- ---
INTERFACE CREATE SESSION NO
and table privs:
SQL> SELECT * FROM dba_tab_privs
2 WHERE grantee = 'INTERFACE';
GRANTEE OWNER TABLE_NAME GRANTOR PRIVILEGE
------------------------------ ------------------------------ ------------------------------ ------------------------------ --------------------
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN INSERT
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN DELETE
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN ALTER
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN FLASHBACK
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN SELECT
what i need to do in order to query this flashback table from interface user. when i try to do this from this user oracle says ORA-00942.
what happen in standby when enable flashback in the primary database?
View 1 Replies View RelatedHow to delete flashback log and to release the space?
I guess that it maybe like archive log ,it can release the space using RMAN.But when i try a test ,it fail.
SQL> STARTUP MOUNT;
SQL> ALTER DATABASE FLASHBACK OFF;
here's my settings
SYS@boston>SELECT ESTIMATED_FLASHBACK_SIZE FROM V$FLASHBACK_DATABASE_LOG;
ESTIMATED_FLASHBACK_SIZE
------------------------
45195264
SYS@boston>select name, value, issys_modifiable from v$parameter where name='db
_recovery_file_dest_size';
NAME
--------------------------------------------------------------------------------
VALUE
--------------------------------------------------------------------------------
ISSYS_MOD
---------
db_recovery_file_dest_size
9663676416
IMMEDIATE
SYS@boston>select * from v$recovery_file_dest;
NAME
--------------------------------------------------------------------------------
SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES
----------- ---------- ----------------- ---------------
D:Ora102chicagooston_recover
9663676416 1671241216 1103842304 50
SYS@boston>select * from v$flash_recovery_area_usage;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE 0 0 0
ONLINELOG .04 0 1
ARCHIVELOG .16 .01 21
BACKUPPIECE 16.84 11.41 22
IMAGECOPY 0 0 0
FLASHBACKLOG .25 0 6
6 rows selected.
SYS@boston>
I have configured a flash recovery area of 9g yet the system keeps complaining that i have not enough flashback logs?
SPACE_RECLAIMABLE 1103842304
ESTIMATED_FLASHBACK_SIZE 45195264
the space_reclaimable is more than ESTIMATED_FLASHBACK_SIZE, so how is it possible the system always complain not enough space?
[URL].....
Quote:
SQL> SELECT TO_CHAR(STANDBY_BECAME_PRIMARY_SCN) FROM V$DATABASE;
it returns me 0, I try to flashback the now defunct former primary db chicago, the system complains. so how much is really enough?
from
[URL]......
Quote:
V$FLASHBACK_DATABASE_LOG
I have read it in books that flashback uses undo data to create the flashback data or to flashback the database to a time in the past.Then, what is the role of archive files in flashback operation. Why it is mandatory to turn on archiving before turning on flashback. Also, if you remove the latest archive files, you can NOT flashback the data to a time in past (Oracle complains of missing archive files).
View 8 Replies View RelatedFlashback table operations are not supported for the SYS user . I have found the above line in one of the article.
I don't know why the SYS user can not able to flash back the table.
My Data Guard 's Enviroment:
Primary: 11.1.0.7 RAC 2 Nodes
Standby: 11.1.0.7 Single Instance
I want to implement Fast-Start Failover at my enviroment. Reading requirements, I found that Oracle Flashback is needed (I don't use Flashback on my databases).
Best Practices recommends 60 min (1 hr) for DB_FLASHBACK_RETENTION_TARGET if I just want to use Flashback to fast-start failover.
My questions:
What 's better, setup up flash recovery area on ASM or O.S. filesystem?
What is the recommended size for flash recovery area?
Is there anyway to backup Flashback Data Archive (FBDA) data and can be restore on new database. I cannot find Oracle's document or any document explain about backing up this data.
View 6 Replies View RelatedWhat is difference between the flashback database(10g later) and incomplete recover?
View 5 Replies View RelatedI delete some of the data from a table unfortunately and make commit on that on my production server.
getting back my all data of this table only of last 15 minutes.
As per Client requirement, i need to configure archive log and backups in flashback.
View 3 Replies View RelatedIf flashback is enable in physical standby database 1. If we failover at 11AM can I flash back NEW primary database to 6 AM ? 2. if I convert physically standby database to snapshot standby database at 11AM , Can I flashback snapshot standby database to 6 AM and do some works on it (DML operations) then converting the snapshot standby database into physical standby database ?
View 1 Replies View RelatedThe undo_retention is used for read consistency, to avoid snapshot too old.Flashback database is using files in the db_recovery_file_dest.But whether undo_retention has any influence on Flashback drop; Flashback table or Flashback query?Let's say we have set undo_retention = 3600 = 1 hour.And
db_flashback_retention_target = 1440 = 24 hours.
Will it work Flashback drop; Flashback table; Flashback query to get 12 hours back?Additional question. Why Oracle sets undo_retention in seconds and db_flashback_retention_target in minutes?To use the same measure would be more user-friendly to DBAs .
In my company we have few 10.2.0.2 databases and few 10.2.0.4 databases.Currently we are monitoring using OEM 10g (10.1.0.5.0) installed on a seperate server.
Planning to install OEM on a new server as part of server room renovation. let me know the process of installing OEM on a different server without loosing the historical data?Also wondering if the OEM 11g will support the current databases?
I have a windows 2008 server.
I already installled oracle software for oracle_home C:/oracle/product/11.2.0/dbhome_1 for database DEV.
Now, I want to create new database with different oracle_home on same server with oracle_home as C:/oracle/product/11.2.0/dbhome_2 and SID as TEST.
Do I have to istall oracle software again ? if yes, what about inventoryfiles in C:\Program Files\Oracle\Inventory ? wont they be overwritten ?
We are getting a consultant to upgrade an Oracle 9i installation to 11g R2. The current installation has 6 different databases installed on the same server. Each database is a different customer so for reasons of security we have requested that this be split into 6 virtual machines with one database per machine.
The consultant suggested that they could install the 11g database once and then just make copies (which would all have the same instance name. We are told that the TNS names can be configured so clients are directed to the right database.
As we can give grant on sequence and can use in different schema of same database, can same sequence be used across databases?
View 2 Replies View RelatedI want copy some tables from one database to another. Which of following is the fastest way:
- INSERT /*+APPEND*/ via database link
- Transportable Tablespaces
- datapump IMP/EXP (I supposed it's the slowest way)
I'm just wondering because i didn't find any example / test databases for Oracle. Thus MS has its "northwind", mysql its "world" or "sakila".
Additionally, the tables view is quiet confusing, referring to all those generated tables (
[URL]........
I tried right-click + apply filter *remove generated* but it didn't work.
