oracle hard partitioning

Tags: RAC max ons _id val use not nbsp tab--Range Partitioning--Build a tableCREATE TABLE Orders(ORDER_ID Number (12),Order_date date NOT NULL,Order_total Number (8,2))Partition by RANGE (order_date)(Partition P1 VALUES less than (to_date (' 2015-01-01 ', ' yyyy-mm-dd ')),Partition P2 VALUES less than (MaxValue))INSERT into orders VALUES (1,sysdate,200)SELECT * FROM orders partition (P1)SELECT Table_name,partition_nameFrom User_tab_partitionsWHERE tab

Tags: OracleOracel table partitioning can basically be divided into several categories:-Range (range) partition-Hash (hash) partition-List partition-Combined partition: Range-hash, Range-list.1.Range (range) partition create partition Tablecreate TABLE table_partition (COL1 number , COL2 VARCHAR2 (100 )) partition by Range (COL1) (Partition tab_p artotion_01 values less than (450000 ), part Ition tab_partotion_02 values less than (900000 ) , par

First, the syntax for establishing partitions is as follows: CREATE TABLE table_name (......) PARTITION by RANGE (column_list) ( PARTITION partition_name VALUES less THAN (values_list) tablespace tablespace_name, ...... ) TABLE_NAME: Table name; Column_list: A list of partition keywords (fields in the table); Partition_name: partition name; Values_list: Corresponding to the column_list, the upper bound value of the partition; Second, the Division maintenance A) Extended partition A, set up the p

I got a colleague asking for help today, saying that there is a select query that runs for more than a minute on Oracle, and he hopes to produce results within 5s, as follows: Select/*+ Parallel (SRC, 8) */distinct src.systemname as SystemName, src.databasename as DatabaseName, Src.tablename as TableName, src.username as username from A simple analysis of SQL In a way, this SQL is the inner JOIN of three tables (META_DBQL_TABLE_USAGE_EXP_HST,DR_QR

--Delete PartitionALTER TABLE tt_trms_all_air_task DROP PARTITION tt_trms_all_air_task_p20171030;1. Add a partitionALTER TABLE Tt_trms_all_air_taskADD PARTITION tt_trms_all_air_task_p20171031 VALUES less THAN (TIMESTAMP ' 2017-10-31 00:00:00 ');ALTER TABLE Tt_trms_all_air_taskADD PARTITION tt_trms_all_air_task_p20171106 VALUES less THAN (TIMESTAMP ' 2017-11-07 00:00:00 ');--Modify Partition field timeCheck the production row movement strategy select Table_name,owner,row_movement from dba_tables

Since the system is a modification of the former batch system, it is necessary to partition the table1, has established the non-partitioned table, cannot make any table partition operation, such as: Add, delete, merge, split can not operate2, the partitioned table retains at least 1 partitions, that is, cannot be completely deleted3, if there is a default partition, cannot add the specified list value partition, can only split the original default partition to be divided into a number of partiti

My RAC Virtual Machine reported that diskgroup space was insufficient during Backup yesterday, so I added asmdisk to my schedule. When installing RAC, I had 2 ASM diskgroups + DG, respectively, + recoverydest: Now + recoverydest has insufficient space, and no redundant asmdisk is created during installation. Only now can the remaining space be recovered. At the same time, two nodes can create asmdisk with virtual machines, then, run the alter diskgroup add disk command to increase the size. The

Solution for oracle redo log file hard disk failure, oracle Log File Solution to oracle redo log file hard disk failure Rman target/list backup; list backup summary; delete logs in the database data folder, for example, sqlplus/as sysdbaalter system switch logfile for all

I. Summary Oracle hard parsing and soft parsing are problems that we often encounter, so we need to consider when to produce soft parsing when a hard resolution is generated and how to judge SQL Execution Process When a SQL or Pl/sql command is published, Oracle automatically finds that the command exists in the sha

The following is the process of adding a new hard disk to the virtual machine and creating an LVM bare device to use with Oracle, and we learn together, there is not the right place to guide, thank you. Linux system is AS4 update 7 Before the experiment, understand some basic concepts, as follows: LVM (logicl Volume Manager), logical Volume Manager, through the use of Logical volume Manager to the

Question 1:Which process is responsible for hard parsing?In addition to low hit rate, what are the other causes of unreasonable Shared Pool settings? When it comes to soft parsing and hard parsingOraclePairSQL. When you issue an SQL statement and deliver it to Oracle, Oracle will perform the following steps before

Tags: also sysdba DDR ext semantics not--data returnWe all know that every SQL statement in Oracle needs to be parsed before it executes, where it is divided into soft parsing and hard parsing. There are two types of SQL statements in Oracle, one for DDL statements (data definition language), and they are never shared, that is, each execution requires

We all know that every SQL statement in Oracle needs to be parsed before it is executed, which is divided into soft parsing and hard parsing. There are two types of SQL statements in Oracle, one for DDL statements (data definition language), they are never shared, that is, each execution requires hard parsing. Another

Question 1: Which process is responsible for hard parsing? In addition to low hit rate, what are the other causes of unreasonable shared pool settings? When it comes to soft parsing (soft prase) and hard parsing (hard prase), it is not worth mentioning the Oracle SQL processing process. When you issue an SQL statement

Oracle hard parsing and soft parsing are the problems we often encounter, what will produce hard parsing, what happens to soft parsing, and how to avoid hard parsing. The following description gives the The emergence of soft and hard parsing, as well as the drawbacks of

; PL/SQL process has been completed successfully. Used time: 00: 00: 04.50 ChenZw> We can view the content saved in v $ SQL and see the following: we can clearly see that the insert statement is parsed once, and 100,000 times are called. Therefore, the execution efficiency changes from 48 seconds of the first time to 5 seconds of the current time. What are the differences between the two? What is the relationship between this example and soft and hard

There are typically several reasons why Oracle databases take up too much hard disk space (for example, Oracle 10.2.0):1. Oracle's installation directory ... \oracle\product\10.2.0\admin\orcl\udump directory, tracking log files occupy a lot of hard disk space;2. Oracle's ins

Environment:Oracle-linux 5.7New removable hard drive (not used)Mobile Hard disk space 3TBy default, the Linux system does not support NTFS partition mounts1. Server:A server and B server for a set of Oracle-rac, mobile hard disk inserted on a server;2. Download the NTFS-3G package and install it on a server:[[Email pro

The SQL statements in Oracle are parsed before execution. A hard parsing includes the following steps: Load to the shared pool-SQLSource codeIs loaded into the memory. Syntax Parsing-Oracle checks for incorrect syntax spelling. Semantic Resolution-Oracle verifies all table names and column names from the data d

In the thought of Oracle Enterprise Linux, the first time was to find resources on the Oracle official network, but Download the Oracle website to log in No account to create a new chant, see registered Oracle account, so much personal information, think on the fear, so on the