impdp中的DISABLE_ARCHIVE_LOGGING参数测试
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标题:impdp中的DISABLE_ARCHIVE_LOGGING参数测试
作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]
在oracle 12c版本中引入了impdp中的TRANSFORM中的DISABLE_ARCHIVE_LOGGING值,可以实现在导入的时候使用nologging处理从而减少日志量也增加速度,但是在force logging情况下该参数无效
创建测试表
[oracle@localhost ~]$ sqlplus xff/oracle@localhost/pdb
SQL*Plus: Release 12.2.0.1.0 Production
on
Fri Apr 7 10:20:45 2017
Copyright (c) 1982, 2016, Oracle.
All
rights reserved.
Connected
to
:
Oracle
Database
12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL>
create
table
t_xifenfei
as
select
*
from
dba_objects;
Table
created.
SQL>
insert
into
t_xifenfei
select
*
from
t_xifenfei;
217838
rows
created.
SQL> /
435676
rows
created.
SQL> /
871352
rows
created.
SQL> /
1742704
rows
created.
SQL>
commit
;
Commit
complete.
SQL>
select
count
(*)
from
t_xifenfei;
COUNT
(*)
----------
3485408
|
导出测试表
[oracle@localhost ~]$ expdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp tables=t_xifenfei REUSE_DUMPFILES=
yes
Export: Release 12.2.0.1.0 - Production on Fri Apr 7 11:55:01 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Starting
"XFF"
.
"SYS_EXPORT_TABLE_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp tables=t_xifenfei REUSE_DUMPFILES=
yes
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
. . exported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Master table
"XFF"
.
"SYS_EXPORT_TABLE_01"
successfully loaded
/unloaded
******************************************************************************
Dump
file
set
for
XFF.SYS_EXPORT_TABLE_01 is:
/u01/app/oracle/admin/xffdb/dpdump/4A93528C587D82CEE055000000000001/t_xifenfei
.dmp
Job
"XFF"
.
"SYS_EXPORT_TABLE_01"
successfully completed at Fri Apr 7 11:55:59 2017 elapsed 0 00:00:58
|
归档模式下不使用DISABLE_ARCHIVE_LOGGING导入
[oracle@localhost rdbms]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 02:43:23 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL>
select
force_logging from
v
$database;
FORCE_LOGGING
---------------------------------------
NO
SQL> alter system switch logfile;
System altered.
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 14
Next log sequence to archive 16
Current log sequence 16
[oracle@localhost ~]$ impdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp
Import: Release 12.2.0.1.0 - Production on Sat Apr 8 02:46:05 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Master table
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully loaded
/unloaded
Starting
"XFF"
.
"SYS_IMPORT_FULL_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
. . imported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Job
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully completed at Sat Apr 8 02:47:08 2017 elapsed 0 00:01:02
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 02:47:30 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 17
Next log sequence to archive 19
Current log sequence 19
|
这里可以看出来,导入过程使用时间为1分钟多,导入过程日志切换 了3次
归档模式下使用DISABLE_ARCHIVE_LOGGING导入
[oracle@localhost ~]$ sqlplus xff
/oracle
@localhost
/pdb
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 02:49:23 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Last Successful login
time
: Sat Apr 08 2017 02:46:05 -04:00
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> drop table t_xifenfei purge;
Table dropped.
SQL>
exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 02:50:00 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> alter system switch logfile;
System altered.
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 18
Next log sequence to archive 20
Current log sequence 20
[oracle@localhost ~]$ impdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Import: Release 12.2.0.1.0 - Production on Sat Apr 8 02:54:49 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Master table
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully loaded
/unloaded
Starting
"XFF"
.
"SYS_IMPORT_FULL_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
. . imported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Job
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully completed at Sat Apr 8 02:55:00 2017 elapsed 0 00:00:10
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 02:55:45 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 18
Next log sequence to archive 20
Current log sequence 20
|
这里可以看出来当使用了DISABLE_ARCHIVE_LOGGING为Y之后导入日志没有发生切换,导入时间仅为10s.
非归档模式下不使用DISABLE_ARCHIVE_LOGGING导入
SQL> alter system switch logfile;
System altered.
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 19
Current log sequence 21
SQL> drop table xff.t_xifenfei purge;
Table dropped.
[oracle@localhost ~]$ impdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp
Import: Release 12.2.0.1.0 - Production on Sat Apr 8 03:22:42 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Master table
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully loaded
/unloaded
Starting
"XFF"
.
"SYS_IMPORT_FULL_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
. . imported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Job
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully completed at Sat Apr 8 03:23:17 2017 elapsed 0 00:00:27
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 03:23:49 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 19
Current log sequence 21
|
这里测试在非归档模式下不设置DISABLE_ARCHIVE_LOGGING,日志量增加不明显,导入时间变为为27秒.
非归档模式下使用DISABLE_ARCHIVE_LOGGING导入
[oracle@localhost ~]$ sqlplus xff
/oracle
@localhost
/pdb
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 03:24:10 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Last Successful login
time
: Sat Apr 08 2017 03:22:43 -04:00
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> drop table t_xifenfei purge;
Table dropped.
SQL> conn / as sysdba
Connected.
SQL> alter system switch logfile;
System altered.
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 20
Current log sequence 22
[oracle@localhost ~]$ impdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Import: Release 12.2.0.1.0 - Production on Sat Apr 8 03:25:51 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Master table
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully loaded
/unloaded
Starting
"XFF"
.
"SYS_IMPORT_FULL_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
. . imported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Job
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully completed at Sat Apr 8 03:26:01 2017 elapsed 0 00:00:10
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 03:26:37 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 20
Current log sequence 22
|
这里可以看出来在非归档模式下使用DISABLE_ARCHIVE_LOGGING导入时间为10s,日志量也没有明显增加。
在force logging在非归档情况下使用不DISABLE_ARCHIVE_LOGGING参数
[oracle@localhost ~]$ sqlplus xff
/oracle
@localhost
/pdb
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 10:07:07 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Last Successful login
time
: Sat Apr 08 2017 03:29:36 -04:00
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> drop table t_xifenfei purge;
Table dropped.
SQL> alter system switch logfile;
System altered.
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 22
Current log sequence 24
SQL>
select
force_logging from
v
$database;
FORCE_LOGGING
---------------------------------------
YES
[oracle@localhost ~]$ impdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Import: Release 12.2.0.1.0 - Production on Sat Apr 8 10:10:39 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Master table
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully loaded
/unloaded
Starting
"XFF"
.
"SYS_IMPORT_FULL_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
. . imported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Job
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully completed at Sat Apr 8 10:11:02 2017 elapsed 0 00:00:21
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 10:11:17 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log lsit;
SP2-0718: illegal ARCHIVE LOG option
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 22
Current log sequence 24
|
这可以可以看出来在非归档情况下force logging无明显增加日志量和导入时间
在force logging在归档情况下使用DISABLE_ARCHIVE_LOGGING参数
SQL> drop table xff.t_xifenfei purge;
Table dropped.
SQL> alter system switch logfile;
System altered.
SQL>
select
force_logging from
v
$database;
FORCE_LOGGING
---------------------------------------
YES
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 23
Next log sequence to archive 25
Current log sequence 25
[oracle@localhost ~]$ impdp xff
/oracle
@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Import: Release 12.2.0.1.0 - Production on Sat Apr 8 10:33:28 2017
Copyright (c) 1982, 2017, Oracle and
/or
its affiliates. All rights reserved.
Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
Master table
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully loaded
/unloaded
Starting
"XFF"
.
"SYS_IMPORT_FULL_01"
: xff/********@localhost
/pdb
dumpfile=t_xifenfei.dmp TRANSFORM=DISABLE_ARCHIVE_LOGGING:y
Processing object
type
TABLE_EXPORT
/TABLE/TABLE
Processing object
type
TABLE_EXPORT
/TABLE/TABLE_DATA
. . imported
"XFF"
.
"T_XIFENFEI"
460.6 MB 3485408 rows
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/TABLE_STATISTICS
Processing object
type
TABLE_EXPORT
/TABLE/STATISTICS/MARKER
Job
"XFF"
.
"SYS_IMPORT_FULL_01"
successfully completed at Sat Apr 8 10:34:50 2017 elapsed 0 00:01:15
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Sat Apr 8 10:35:09 2017
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 26
Next log sequence to archive 28
Current log sequence 28
|
这里可以看出来在force logging情况下,设置DISABLE_ARCHIVE_LOGGING参数不生效
从上述测试在不管是非归档还是归档情况下使用DISABLE_ARCHIVE_LOGGING都会减小导入时间,减少归档量,但是需要注意如果数据库是force logging情况下,DISABLE_ARCHIVE_LOGGING参数会无效。