Insert Operation Very Slow While Import?
Feb 20, 2011
I am working on an SAP application migration project using Oracle 10.2.0.2 database. We are migrating the application from Windows to Solaris.
During the process we are facing problem with very slow insert operation on a particular table.The server's capacity is very good and so no resource bottleneck.
The table contains around 2,70,000 rows and inserting at around 100 rows per 10 seconds.
The table contains following data types.
SQL> desc SAPDATDB.CAF_GP_VALDEF;
Name Null? Type
----------------------------------------- -------- ----------------------------
VAL_UUID NOT NULL NVARCHAR2(34)
VAL_GUID NOT NULL NUMBER(10)
VAL_CLOB NCLOB
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Sep 3, 2012
I am migrating a oracle 9i database to 11g r3. I can only use imp. As the database is huge, I have split the exp dump by schemas. In my recent test, i have split the schema into 4 seperate threads to be imported into the new oracle11g database. The 4 thread of imp consist of almost similar sizes of schema (Eg thread 1 - Schema 1, 2 ,3. Thread 2 - Schema 4,5,6 etc)
All the dump files are in the same mount point. When i execute the import (4 threads) together, the total import timing is each thread is between 2.5 days to 3.5 days.
Then i proceed to try only 1 thread, only 2 hrs. So could this be a IO issue or oracle memory problem?
Specs
IBM AIX 6.1, 32GB RAM
Oracle
24GB AMM
Number of processes 500
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Jul 4, 2011
Few days ago, My database server no access to StorageBox then I reboot it then after works fine. But, know DB import process is too slow. Before 100GB DB import process completed within 10 hours when server normal running. Now 2 day working, but not complete
How to investigate this issue? Maybe I miss increase some parameters on the Server or Oracle?
Here is my server brief info:
RAM is 16GB,
SWAP size is 16GB,
CPU 12 cores
SQL> show sga;
Total System Global Area 4294967296 bytes
Fixed Size 1984144 bytes
Variable Size 369105264 bytes
Database Buffers 3909091328 bytes
Redo Buffers 14786560 bytes
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Mar 23, 2012
we are using oracle 9i on AIX Server. When Customer were accessing the database, accidentally power was shut down. we restarted the Server,and Oracle database. all resumed successfully.
However while doing "Payments by the customer" it takes a lot of time to insert even a single payment record on database.The database is Live and our customer are very much frustrated,
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Apr 13, 2009
I am receiving the following error while inserting records.
"Oracle Error:ORA-12899: value too large for column "MFG_ADMIN"."GAGE_RESULTS"."COMP
whereas I am checking the length of all values before inserting and am sure that none of them are larger than column lengths.I did some research and found this error might be due to character set.
select * from nls_database_parameters where parameter like '%CHARACTERSET';
PARAMETER VALUE
------------------------------
----------------------------------------------------------------------------------------------------
--------------------
NLS_CHARACTERSET UTF8
NLS_NCHAR_CHARACTERSET UTF8
how can this be related to my problem or if something else is causing this error.
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Jul 22, 2013
Insert statements from Java are processing very slow i.e 1L records taking 15Mins on every row commit ( Batch insert is not applicable that's why they are committing on every row). - Only 1 index
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May 30, 2013
I've been using datapump for a long time now but I have not come across this problem before.
Importing just two tables: Table1 data=100Mb=11 million rows
Table2 data=4.2Gb =19.6 million rows
Table1 ran for approx. 5 hours
Table2 ran for approx. 15 hours
If I run the impdp importing both tables in the same par file the default tablespace of the users the import is running as runs out of space due to ORA-01691: unable to extend lob segment <owner>.SYS_LOG0001175799C00045$$ by 512 in tablespace USERS. I do not understand why it is creating objects in order to import tables into someone elses schema.
The environment is Red Hat LINUX 4.1.2-51 running Oracle 11.2.0.1 of Oracle11gR2. This is a 9 node RAC using ASM.
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Jun 22, 2012
MY DB Version: 10.2.o
OS: Windows Server 2003
I am trying to import on table which i have the export dump file which i take using expdp previously when i load that table on the same host
by using below command:
expdp scott/tiger@db10g tables=EMP,DEPT directory=TEST_DIR dumpfile=EMP_DEPT.dmp logfile=expdpEMP_DEPT.log
after that i zip that dump and move it to external usb and now i need that table i copy that table and unzip that that dump
Command i am using to do the import is :
impdp scott/tiger@db10g tables=EMP,DEPT directory=TEST_DIR dumpfile=EMP_DEPT.dmp logfile=impdpEMP_DEPT.log
But the query of import is still runing even not showing any amount of rows to be imported.
i already make the tablespace in which the table was previosuly before dropping but when i check the sapce of tablespace that is also not consuming one error i got preiviously while performing this task is:
Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
Master table "CDR"."SYS_IMPORT_TABLE_03" successfully loaded/unloaded
Starting "CDR"."SYS_IMPORT_TABLE_03": cdr/********@tsiindia directory=TEST_DIR dumpfile=CAT_IN_DATA_042012.DMP tables=CAT_IN_DATA_042012 logfile=impdpCAT_IN_DATA_042012.log
[code]....
i check streams_pool_size it will show zero and then i make it to 48M and after that
SQL> show parameter streams_pool_size;
NAME TYPE VALUE
-----------
streams_pool_size big integer 48M
But still it takes time
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Sep 29, 2012
My database version
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - ProductionOS version:
Windows 7 64bit I have schema(scott) export with schema level option and imported with different name as (scott1).At regular period of time i need to import the scott to scott1 without affecting existing records.such as
*1. Need to append new created records.*
*2. Need to append updated records.*
for the above requirement I did in the following way
expdp xxxx/******** schemas=SCOTT directory=dumpdir dumpfile=SCOTT_28-SEP-2012.dmp logfile=exp_SCOTT_28-SEP-2012.log imported in the following way impdp xxxx/******** AS SYSDBA REMAP_SCHEMA=SCOTT:SCOTT1 directory=DUMPDIR dumpfile=SCOTT_28-SEP-2012.dmp logfile=imp_SCOTT2_28-09-2012.log TRANSFORM=SEGMENT_ATTRIBUTES:n TABLE_EXISTS_ACTION=APPEND.
The problem is i couldn'table to append the records to existing tables the log error show such ways.
ORA-31684: Object type USER:"SCOTT1" already exists
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
[code].....
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May 10, 2013
I am trying to run impdp over network to import tables only but i am getting an error saying not able to create metadata and the import fails
Here are the steps below,
1. Source database created a user and granted select on certain tables to the user.
2. Created a user in the Target database.
3. Created a public link as sys user in the target database.
4. granted imp and exp full database to both users and all the other privs.
5. Started the impdp from the target server.
The import fails with
$impdp abc/xyz directory=DATA_PUMP_DIR network_link=TESTAR logfile=net_import_proddev.log TABLES=impdb.abc parallel=12 REMAP_SCHEMA=IMPDB:ABC
Import: Release 11.2.0.3.0 - Production on Tue Apr 23 13:10:51 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Starting "IMPDB"."SYS_IMPORT_TABLE_01": abc/******** directory=DATA_PUMP_DIR network_link=TESTAR logfile=net_import_proddev.log TABLES=impdb.abc parallel=12 REMAP_SCHEMA=IMPDB:ABC
[code]....
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Jul 9, 2013
aix 6.111.2.0.3 I have an expdp dump from prod to be imported to our test database.I have imported it using impdp, but to my surprise the tables were imported but lots of indexes were not created? even If I have used TRANSFORM=SEGMENT_ATTRIBUTES:N just to use the default USERS tablespace. How do I import the indexes separately, skipping the tables and other objects?
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Jul 2, 2012
How to import data from excel(.xls) file to data base table
I have excel sheet(.xls) data details, I neet to upload details to data base table using procedure
excel sheet is not CSV file, so SQL Loader is not using
any alternative solution for this issue
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Nov 23, 2012
I had just successfully finished a full importing from Oracle 9i DB to Oracle 11gR2 DB. My export was a full db export.
Prior to this importing, my 11g was a newly created DB with the default SYS, System etc.. schema. Their passwords is different from those in 9i.
However, i realised that after importing... their passwords in 11g was replaced by those passwords in 9i, including SYS and SYSTEM user...
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May 24, 2013
I want to import data in a csv file by SQL Loader.
but , I don't want to import some illegal rows when the column 'name' is null
how can I modify the SQL Loader ctrl file?
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Sep 17, 2012
I try to transfer data from one database to another one through data pump via SQL Developer (data amount is quite important) exporting several tables. Tables export is doing fine, but I encounter the following error when I import the file (I try data only and data + DDL).
"Exception: ORA-39001: argument value invalid dbms_datapump.get_status(64...=
ORA-39001: argument value invalid
ORA-39000: ....
ORA-31619: ...
The file is in the right place, data pump folder of the new database. User is the same on both base, database version are similar.
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Dec 22, 2012
I am trying to migrate a table to a new table that has the field sequence changed and also has a new field added. My main question is if it is possible to have datapump add values to the new field in the target table.For example:
-original table has fields a, b, d, c
-new table has fields b, c, d, a, e
I want to load the new table and also include adding values for field e. In this case, field e is a year field, so it should be loaded with '2012'..Does datapump have the ability to do this? Is reorganizing the fields going to cause me any problems? We are on oracle version 11.2.0.3
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Feb 15, 2013
When I do the import the of succeeding dump, I drop the existing schema "SQL> drop user username cascade;" and import dump by " impdp system .... ". I would like to import a dump to an existing instance but only data import and will leave the current packages and other metadata untouched and unchanged on the said existing instance.
1. Do i need to drop user before the import if my requirements are the above?
2. If i need to drop user, what should be script.
3. For the import itself, what parameter should i use?
4. What are the necessaries I need to consider before doing the import.
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Dec 12, 2012
version:11.2.0.3
Platform : RHEL 5.4
Imagine you have 100 schemas backed up (expdp) in a dumpfile and you want to import just one schema from that dumpfile in a DB. You can specify just that one schema you want using SCHEMAS parameter in the impdp. But things are not straightforward when you want use REMAP_SCHEMA.
Here is my scenario:
===================
I took the expdp dump of schemas A and B in one go. So, dumpfile has objects from both A and B.The dumpfile name is : schemas_AandB.dmpNow , I want to create schema C from A using REMAP_SCHEMA parameter
-- Putting each parameter in a separate line for readability
impdp PSTREF/PSTREF_123
DIRECTORY=ADET_EFX_DIR
DUMPFILE=schemas_AandB.dmp
LOGFILE=CreatingCfromA-Impdp.log
REMAP_SCHEMA=A:CEverything goes fine. Schema C is created from Schema A in the dumpfile.
But impdp is trying to create schema B as well because schema B was present in the dumpfile. Since the schema B and its objects are already in the DB , I get the following errors.
ORA-31684: Object type USER:"B" already exists
ORA-31684: Object type PROCEDURE:"B"."SP_CLEAREXPIREDSESSIONDATA" already exists
ORA-31684: Object type PROCEDURE:"B"."SP_DELETESESSIONDATA" already exists
ORA-31684: Object type PROCEDURE:"B"."SP_DELETESTATECONTEXTINFO" already exists
[code]...
Trying to avoid schema B in the dumpfile from being imported by specifying SCHEMASBut I got the following error
ORA-39065: unexpected master process exception in MAIN
ORA-12801: error signaled in parallel query server PZ99, instance oracth214:HEWRAC1 (1)
ORA-01460: unimplemented or unreasonable conversion requestedMaybe REMAP_SCHEMA and SCHEMAS parameters won't work together.
Is there any way to prevent the impdp from importing user B and its objects ?
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Oct 14, 2012
I have taken expdp dump from 11g database running in Development env.Now i want to import this dump into 10g database running in QA env.
while taking export from 11g database i used this script and backup was sucesssful
expdp system TABLES=sss_exp_test.EXP_SB_HEADER_TMP VERSION=10.2 DIRECTORY=RMSDEV_IMP_DIR DUMPFILE=EXP_SB_HEADER_TMP.dmp LOGFILE=EXP_SB_HEADER_TMP_expdp.log
When i trying to import this dump in 10g getting error.
impdp system TABLES=sss_exp.EXP_SB_HEADER_TMP DIRECTORY=RMS_DATA_PUMP DUMPFILE=EXP_SB_HEADER_TMP.dmp LOGFILE=EXP_SB_HEADER_TMP_impdp.log
Import: Release 10.2.0.5.0 - 64bit Production on Sunday, 14 October, 2012 19:58:53
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Password:
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39002: invalid operation
ORA-39040: Schema expression "SCHEMAS" must identify exactly one schema.
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Feb 11, 2013
I received dmp file , and i want to import only data from that file ?
How can we achieve that in oracle Oracle 11.2.0.3
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Jan 7, 2013
I have new machine with oracle 11g and i have exported dump from oracle 10g . Now i need to import that dump on oracle 11g.
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Sep 8, 2011
run down of the implications of MERGE by ROWID in such a fashion:
CODE MERGE
INTO XXWT_AP_ACCRUALS_RECEIPT_F EXT
USING (
SELECT PO_DISTRIBUTION_ID,
[code]...
Can this lead to an "Unstable Set of Rows?". Is it possible for the ROWID's to change during the execution of this statement - meaning certain ROWIDs identified in the SELECT will not actually be updated when it comes to the MERGE operation?
Basically, is it sound practice to use ROWID to merge on - in cases where you dont have a WHEN NOT MATCHED condition?
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Apr 17, 2012
The issue is slow insertion in particular table(i.e A Table) it means insertion in all other tables(i.e B, C, D tables) in same schema is going properly but only when i am trying to insert in one particular table(i.e A table) in same schema it takes long time to complete insertion. Daily insertion is 6000 rows.
I have check all the details like Tablespace size, Analyzing of table, Analyzing of indexes and all. There is no any error alertlog file.
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May 16, 2007
We have two database instances on the same server. One was left at 9.2.0.7 and one was upgraded to 10.2.0.3. Connecting externally (sqlplus '/as sysdba') to the 9.2.0.7 database is lightning fast. Connecting externally to the 10.2.0.3 database is very slow, comparatively speakiing. This is on an IBM AIX-5L (64-bit) machine. We are using "tnsnames".
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Aug 3, 2010
WHY PARAMETRIZED CURSOR IS SLOW
I have the following query which is very slow
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IS
SELECT a.party_id,
a.party_type,
b.cust_account_id,
b.attribute17
[code].......
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Apr 22, 2012
We have done cloning of our ORACLE APPLICATION(11i),after that performance of ERP is getting slow (like fetching of data). What we can do to increase the performance.
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Jun 12, 2013
I am using the dblink to merge the data. I am using the following merge statement.
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Using (select 'test' GRANTEE,'TESTxxx'ROLE from dual ) s
on (t.GRANTEE = s.GRANTEE and t.ROLE = s.ROLE)
when not matched then
insert (ID,GRANTEE,ROLE,XRIGHT,COMPANY,OWNER,TABLENAME)
values ('','test','TESTxxx',null, null, null, null);
I know that I have to set a commit and it's working when I insert information's with a normal insert statement via database link, but it seems that merging doesn't work.
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Apr 29, 2010
What are all the DML operation can be done in DUAL table.?
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Jun 12, 2013
I have a source view where I have some invalid records and those should be found based on codes present in another table.
For eg. from source the records come like
****************SIINNSFDFD****FDFDF2******8
**********TABLE****************FDFSFSSFASFAS********
and if my reference table has values
SIINNSFDFD
TABLE
then these values are present as substring in the particular column in the source view. So I need to flag those records. For every record, I need to check whether all the values present in the reference table matches or not. If it matches then it should be flagged.
I can use in operator as we are not checking for the exact match and we are checking whether that value is present anywhere in that column record.
Looping results in performance issue. We can use PL/SQL for this. As the source view is put into a ETL internal file.
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May 5, 2010
i have created an file in my local system (sys name : System1). i have created a directory as below
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I gave rights as
SQL>GRANT ALL ON DIRECTORY TEST_DIR TO PUBLIC;
DECLARE
fileHandler UTL_FILE.FILE_TYPE;
BEGIN
IF utl_file.is_open(fileHandler) THEN
utl_file.fclose_all;
END IF;
[code]......
but while executing the above procedure, Invalid File Operation error occurs.
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