Oracle common table-> Partition Table conversion (0.9 billion data volume)
Background:
Environment: Linux 5.5 + Oracle 10.2.0.4
A common table T has no partitions due to improper preliminary design. Now, the data volume has reached more than 0.9 billion in the past few years, and the space usage is about 350 GB. It is
Today, I am struggling with this problem for a day.
The following code is reproduced on the Internet.
Create Partition Function pf_orders_orderdaterange (datetime)AsRange right for values ('2017-01-01 ','2017-01-01 ','2017-01-01')Go-- Create a partition schemeCreate Partition Scheme ps_ordersAsPartition pf_orders_orderdaterangeTo ([primary], [primary], [primary],
Oracle common table mdash; gt; partitioned table conversion (0.9 billion data volume)
Oracle common table mdash; gt; partitioned table conversion (0.9 billion data volume)
Background:
Environment: Linux 5.5 + Oracle 10.2.0.4
A common table T has no partitions due to imp
As the database data volume continues to grow, some tables need to be converted from normal heap tables to partition tables. There are several different methods for this operation, such as exporting table data.
As the database data volume continues to grow, some tables need to be converted from normal heap tables to partition tables. There are several different m
wide variety of applications by improving manageability, performance, and availability. In general, partitioning can greatly improve the performance of certain queries and maintenance operations. In addition, partitioning can greatly simplify common administrative tasks, and partitioning is a key tool for building gigabytes of data systems or ultra-high availability systems.The partitioning feature can further subdivide a table, index, or index organ
Background introduction:Environment: Linux 5.5 + Oracle 10.2.0.4A normal table T, due to improper design of the previous period of time, the amount of data has reached 900 million +, the space occupied about 350G, the online redefinition of the partition table is not realistic, so take the application time window stop this ta
When the partition1. Tables larger than 2GB2. With 10 million records above, the more data that is contained in the table, the slower the SQL operation will be executed.3. A table that will contain a large amount of data.4. A table that can be used to facilitate parallel operations after breaking the split.5. Contains a table
the datetime stamp, simply delete them.
REASON #2: Look carefully in the suffix of each table. #P #p? resembles a partition tag. This is would indicate a attempt to create temp table using Partitiions. That ' s sounds insane. There was Bug is in the Feb, 2006 for MySQL 5.1.7-beta (closed Mar 15, 2006). The bug is based on trying to does this manually. is MySQL
Ext.: Http://zhidao.baidu.com/link?url=82Xf_uK9VgIeYM_1kczmvKhiEQKLCqhN4_Tfe_cvriqkeP7Wggy5D60VTnMxFREwz5Q5SZ725Zt6CLjphr4TVKq :sqlserver2008 new query, the table name appears red wavy line, display "Invalid table name", but still can query to get results? A: In Microsoft SQL Server Management Studio, click "Edit"--"IntelliSense"--"refresh local cache", you wil
Label:What is a table partitionIn general, when we create a database table, the table data is stored in a file. However, if it is a partitioned table, the table data will be divided into different files according to the rules you specify, splitting a large data file into mul
The table names imported to the database are garbled due to inconsistent codes and cannot be deleted.
The names of tables whose names start with numbers and whose names contain invalid characters cannot be deleted.
It is said that the card cannot be deleted, but the card cannot be deleted based on common sense.
Solution:
Drop sequence "???? _ TIME $ _ SEQ ";
Drop sequence "???????? _ TIME $ _ SEQ ";
D
Reproduced from MySQL partition tableToday's statistics show that a table uses table partitioning to take this opportunity to record.1. What is a table partition?Table partitioning refers to the decomposition of a
. Start_redef_table (' test1 ', ' t_objects ', ' t_objects_temp ', null,2); 4, start copying the properties of the table (this time not done, because the index is not a partition index because of this conversion)DECLARE error_count Pls_integer: = 0; BEGIN dbms_redefinition. Copy_table_dependents (
such as an error in the Oracle database:CREATE TABLE Db_meta_web.user (ID varchar2 (255 char) NOT NULL, account VARCHAR2 (255 char), Department VARCHAR2 (255 Char), Email varchar2 (255 char), mobile varchar2 (255 char), name VARCHAR2 (255 char), password varchar2 (255 char), PRIMARY key (ID ))The table name user and field name password fields Here are reserved keywords, so the error identifier is invalid.In
When you use Fdisk or other partitioning tools to partition a hard disk, the partitioning software creates a 64-byte partition table in the disk with 0 cylinders, 0 heads, and 1 sectors. The partition table is very useful. It specifies the number of partitions in the hard di
;Delete from rebuild_table;Insert into rebuild_table select * from dba_objects;Insert into rebuild_table select * from rebuild_table;Insert into rebuild_table select * from rebuild_table;Commit;Update rebuild_table set object_id = rownum;Alter table rebuild_table add CONSTRAINT P_YY primary key (OBJECT_ID );Select * from rebuild_table;2. Create a partition tableCreate t
above code, we can see that this table has the characteristics of the general table--there is a primary key, and the primary key is also a clustered index. As mentioned earlier, a partitioned table is a partition condition for a field, so you cannot create a clustered index other than this field. Therefore, to convert
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