Statistics gathered during import [message #392198] |
Tue, 17 March 2009 00:19 |
ora_2007
Messages: 430 Registered: July 2007 Location: Mumbai
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Senior Member |
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Does after IMP import the tables are analyzed automatically?
When i done import process of TEST user
imp system/manager file=/home/oracle/test.dmp FROMUSER=TEST TOUSER=TEST
and when i execute following query
SELECT table_name,last_analyzed FROM DBA_TABLES WHERE owner=TEST'
I find that table/indexes are analyzed automatically.
Does it means statistics are gathered automatically during import?
Oracle 10.2.0.1
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Re: Statistics gathered during import [message #392201 is a reply to message #392198] |
Tue, 17 March 2009 00:36 |
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Michel Cadot
Messages: 68728 Registered: March 2007 Location: Saint-Maur, France, https...
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Senior Member Account Moderator |
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C:\>imp help=y
Import: Release 10.2.0.4.0 - Production on Mar. Mars 17 06:35:18 2009
Copyright (c) 1982, 2007, Oracle. All rights reserved.
You can let Import prompt you for parameters by entering the IMP
command followed by your username/password:
Example: IMP SCOTT/TIGER
Or, you can control how Import runs by entering the IMP command followed
by various arguments. To specify parameters, you use keywords:
Format: IMP KEYWORD=value or KEYWORD=(value1,value2,...,valueN)
Example: IMP SCOTT/TIGER IGNORE=Y TABLES=(EMP,DEPT) FULL=N
or TABLES=(T1:P1,T1:P2), if T1 is partitioned table
USERID must be the first parameter on the command line.
Keyword Description (Default) Keyword Description (Default)
--------------------------------------------------------------------------
USERID username/password FULL import entire file (N)
BUFFER size of data buffer FROMUSER list of owner usernames
FILE input files (EXPDAT.DMP) TOUSER list of usernames
SHOW just list file contents (N) TABLES list of table names
IGNORE ignore create errors (N) RECORDLENGTH length of IO record
GRANTS import grants (Y) INCTYPE incremental import type
INDEXES import indexes (Y) COMMIT commit array insert (N)
ROWS import data rows (Y) PARFILE parameter filename
LOG log file of screen output CONSTRAINTS import constraints (Y)
DESTROY overwrite tablespace data file (N)
INDEXFILE write table/index info to specified file
SKIP_UNUSABLE_INDEXES skip maintenance of unusable indexes (N)
FEEDBACK display progress every x rows(0)
TOID_NOVALIDATE skip validation of specified type ids
FILESIZE maximum size of each dump file
STATISTICS import precomputed statistics (always)
RESUMABLE suspend when a space related error is encountered(N)
RESUMABLE_NAME text string used to identify resumable statement
RESUMABLE_TIMEOUT wait time for RESUMABLE
COMPILE compile procedures, packages, and functions (Y)
STREAMS_CONFIGURATION import streams general metadata (Y)
STREAMS_INSTANTIATION import streams instantiation metadata (N)
The following keywords only apply to transportable tablespaces
TRANSPORT_TABLESPACE import transportable tablespace metadata (N)
TABLESPACES tablespaces to be transported into database
DATAFILES datafiles to be transported into database
TTS_OWNERS users that own data in the transportable tablespace set
Import terminated successfully without warnings.
What is the "statistics" parameter default value?
Regards
Michel
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Re: Statistics gathered during import [message #392206 is a reply to message #392198] |
Tue, 17 March 2009 00:44 |
ora_2007
Messages: 430 Registered: July 2007 Location: Mumbai
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Senior Member |
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Thanks for reply.
The thing is i used STATISTIC=NONE during EXPORT.
So if i will not used STATISTIC=NONE in IMPORT command will it calculate statistics automatically?
Please confirm?
Thanks,
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