I would like to know the buffer size using by our dba when he set export?
I know that it's possible to define it when we realize the export but its possible to know this value after export?
There's a sql*plus command to find this value?
N.B : we dont have documentation
Its for an urgent need.
Does cache buffer chain latch and buffer busy wait event are related to one any another.
Latch definition from Google says : Latches are simple, low-level serialization mechanisms to protect shared data structures in the system global area (SGA).
what does it mean my protect. Does this mean protects from aging as per LRU algorithm and getting removed from SGA
or
protect from other processes ,say from example from simultaneously DML operations.
or
both
Does buffer busy wait event occurs , because of the cache buffer chain latch ?
I am using expdp command to export the table by specifying Query parameter. But i am unable to export the table based on the condition.
Ex:EXPDP username/password dumpfile=employee.dmp logfile=emp.log directory=DATADIR_EXP TABLES=EMPLOYEE query=EMPLOYEE:"UPDATED_TIME >= '04-JUN-13' AND UPDATED_TIME >= '05-AUG-13'" Estimate in progress using BLOCKS method...Processing object type TABLE_ EXPORT/ TABLE/ TABLE_ DATATotal estimation using BLOCKS method: 3 GBORA-31693: Table data object "<username>"."EMPLOYEE" failed to load/unload and is being skipped due to error:ORA-00933: SQL command not properly endedMaster table "<username>"."EMPLOYEE" successfully loaded/unloaded...Dump file set for <username>.SYS_EXPORT_TABLE_01 is: E:IMPDPemployee.dmpJob "<username>"."SYS_EXPORT_TABLE_01" completed with 1 error(s) at 12:34:45 Oracle 11g,
I am trying to export selective data from one of my prod database tables. But not succeeding. I was keep on trying for the past 2 hours.
OS : SOLARIS SPARC
ORACLE - 10G
Query --> WHERE E3RECV_DT LIKE '201305%' (I need to export this query data)
Below Script i am using
===============
exp E3USER@SGEBAPU2 statistics=none consistent=n buffer=100000000 file=exp_pipe_file TABLES=IFDATA query="WHERE E3RECV_DT LIKE '201305\%'" log=PGTB_IFDATA_conditional.log
I have schema level export for user SAMPLE1(Default tablespace USERS) on oracle 9.2.0.1 production database. I want to import into another 9i database on another server, so do i nneed to Create SAMPLE1 user and USERS tablespace in new database again.
View 5 Replies View Relatedlet us consider mytest schema is having 6 tables
tname tabtype
myt table
myaxpertlog table
abb table
ccc table
ddd table
xxx table
now from this schema i want full dump and also from myaxpertlog table i required metadata only not records.
c:> export mytest/log file=20130409mytest0904pm.dmp tables=(myaxpertlog) rows=n
if i tried i am get only one table but it does have records.
I have one prod server (11.1.0.6.0) servers on Windows 2003 R2 64 bit.
Server Name (PRODDB)
I do not have access to that prod server , i want to take one export data pump from my client machine and due to space issue in prod server , i want to keep dump file in my client machine itself. i can take traditional export and keep the dump file in my client machine but i do not know how to achieve the same via data pump ...
How to generate dump file in client machine itself via data pump ?
I am using Oracle 10g Data Pump Export utility expdp. What I am trying to do is to export a single schema, except for a certain partition P in table T.
I have tried:
expdp user/pass@db dumpfile=... logfile=... exclude=table:" = 'T:P' "
It doesn't work. The whole table T gets exported.
Is there a way to exclude partitions from schema mode export?
If not, is there a way I can achieve the same with DBMS_DATAPUMP API?
export data program "ociuldr" can not run in 64bits win2008 environment. Where can i download 64 bit version of "ociuldr" program. I have read some article . The article mention that the export data program ociuldr.exe need to recompile into 64 bits version. Finally I also want to ask the import data program sql loader "sqlldr.exe". Can it run in 64 bits environment. Where can i downlaod 64 bits version of "sqlldr" program.
View 1 Replies View RelatedI want to export a table ( using exp or expdp ) from client machine. Dump file should be created to client machine.
Is this possible ? How to do this ?
I have a question related to Oracle Data Pump.
So, I want to export two schemas from database with condition:
1. I want to export scheme_1 with all metadata objects + data.
2. I want to export scheme_2 with only metadata objects.
Oracle version is Oracle EE 10.2.0.4.0, OS - Microsoft Server 2003R2.
As far as I know I can not use parameter EXCLUDE like:
EXCLUDE =TABLES:" IN ('SCHEMA_NAME.TABLE')"
(-but this parameter will give me no tables at all) or I can not use CONTENT=SCHEMA_NAME.METADATA_ONLY, maybe I can use QUERY=where table in (select tablename where schema is .... - but I have tables with same name in both schemas).
We need to export a big table into a text file with Column delimiter '&|' and row delimiter '$#'.
DB Version is 10.2.0.2, the table size is around 4 GB.
I have a few questions and doubts regarding to cache buffer chains and lru chains.
1. What can possibly cause the cache buffers chain ?
2. Can it be resolved by increasing the free lists and increasing the inittrans of the block after identifying the hot buffers? (The table spaces are not a ASSM.)
3. How can we classify where the cache buffer chain is caused? Is there anything like extent level, header level? ( i don't understand this part due to the reason i see many operations against cache buffer chain event in stats pack reports).
4. Is cache buffer chain is related to the cache buffers chain event too?
5. In such case, tuning either of the contention will resolve the other if both exists?
What is By Default Buffer size in Oracle ......?
View 4 Replies View RelatedDoes the counter of event buffer gets include the logical reads ? Does the mertic buffer gets include the event of reading from undo buffer ?
View 4 Replies View Related/* Formatted on 2013/01/10 16:22 (Formatter Plus v4.8.6) */
CREATE OR REPLACE PACKAGE pk_batch_feds
AS
[Code]....
how can we check the size of data buffer cache.
View 7 Replies View RelatedWhen we set Consistent parameter as yes during export, we get a consistent dump of the database/ schema from the point it was taken by setting the transaction Read only.
So let say we are exporting a table TAB_1 and at the same time a different user updates one of the row of this table and then another user updated this row again so and so forth. So from where do export gets the image of this row which was present at the point in time when the export was initiated in the first place. Is it the Undo?
I would like to export an entire DB metadata . I want to exclude data.is it possible.We have 100+users.We get request to restore package from their schema very often.So I am thinking of creating job to emport an entire DB metadata .
View 7 Replies View RelatedI want to export table. That table was partitioned 322.if i query that table ,it's showing 322 lines .
object type :table partition.
expdp command for export the table.
oracle 11g.2 ASM with RAC under RHEL 5
we have 2 table same structure one of them is empty and the pther one is contain data the vendor do the insert as select but i found he is wrong due to there duplicated ,now i want to use export and then rename the table and then import but i need with export do a condition
exp user/pass tables=MTR_EPPC_CALLED_DATA file=MTR_EPPC_CALLED_DATA.dmp query="where callstarttime >=to_date('01122012','ddmmyyyy')
and callstarttime <=to_date('31122012','ddmmyyyy')"
but it's seem the query take one condition how can i use this above condition in export ???also my friend say there is way to insert with rowid is this possible ??
what will be best buffer cache hit ratio for a database for good performance
note : in general
I want to know what exact process happens in oracle architecture when an update query is fired.
View 1 Replies View RelatedI'm trying to create a table with a select statement. I want to populate this new table with the aggregated value from a VIEW. Following is the code used for creating the VIEW,
create or replace view FINAL_WEB_LOG
as
select SESSION_ID,
SESSION_DT,
C_IP,
CS_USER_AGENT,
tab_to_string(CAST(COLLECT(web_link) AS t_varchar2_tab)) WEBLINKS
from web_views_tab
group by C_IP, CS_USER_AGENT, SESSION_DT;
I want to create a table with WEBLINKS and SESSION_ID which is a sequence from another table.
CREATE TABLE FINAL_WEB
AS
SELECT weblinks
FROM final_web_log
UNION
SELECT session_id
FROM WEB_VIEWS_TAB;
This now gives me the following error,
SQL Error: ORA-06502: PL/SQL: numeric or value error: character string buffer too small
This has to do with the field, Weblinks, it does have longer values.
I am running script which drop all public synonyms and create private synonyms for all eligible objects. I am passing value to procedure through cursor and I am using dbms_output.
ERROR at line 1:
ORA-20000: ORU-10027: buffer overflow, limit of 999999 bytes
ORA-06512: at "SYS.DBMS_OUTPUT", line 32
ORA-06512: at "SYS.DBMS_OUTPUT", line 97
ORA-06512: at "SYS.DBMS_OUTPUT", line 112
ORA-06512: at line 101
I read that by: SET SERVEROUTPUT ON SIZE unlimited would resolve this problem.
What are the effects?Do I need to check any disk space, or any effect on the memory?
is there any method to store a value in "copy buffer" ?
I mean, for example, if i have defined a global varaiable as
Quote::global.name := 'orafaq';
Then what i need is a command something like:
windows_copy_buffer := :global.name ;
So that later on when i press control+v, then it paste the word "orafaq".
What's the difference between a dirty buffer and a redo buffer?
My understanding is that a dirty buffer is a changed buffer or whenever data changes in the buffer cache, it's marked as dirty. Also, a redo buffer keeps track of changes that were made to the data, so it's also referring to changed data as well...DWBn writes dirty buffers to disk and LGWR writes redo data to redo log filesHow can we differentiate between the two?
I learnt that logWriter writes in the redo log files when redo log buffer is 1/3 full, it means that 66 % of redo log buffer are always empty and never used,
if no, isn't a waste of memory (66 % always empty !)
give a script to find how much my db buffe cache and redo log buffer cache is used and how much is free.
View 1 Replies View RelatedDatabase : 9.2.0.7
Os : windows 2003 sevrer standdard edition
RAM 4 Gigs
The buffer cache hit ratio in this server is around 83%, where it normaly was around 98% before i did some maintenance activities.
I have done some maintenance activities in January on this database.
Maintenance activties includes below steps
1.In production i have deleted old data in the production tables
2.Reorganized tablespaces,tables
3.Rebuild indexes for those tables.
4. At last collected statistics for those tables.
Now after this activity the buffer cache hit ratio is very low.