What is Oracle Minextents?
What is Oracle Minextents?
MINEXTENTS specifies the total number of extents to allocate when the object is created. This parameter enables you to allocate a large amount of space when you create an object, even if the space available is not contiguous.
What is G in Oracle 11 g?
Version 11g of the Oracle Database, which included built-in testing for changes, the capability of viewing tables back in time, superior compression of all types of data and enhanced disaster recovery functions. The “g” stood for “grid computing,” which supports clusters of servers that are treated as a single unit.
What is Pctfree and Pctused setting?
The PCTFREE and PCTUSED parameters are physical attributes that can be specified when a schema object is created or altered. These parameters allow you to control the use of the free space within a data block. This free space is available for inserts and updates of rows of data.
What is pct increase Oracle?
From Oracle FAQ. PCTINCREASE refers to the percentage by which each next extent (beginning with the third extend) will grow. The size of each subsequent extent is equal to the size of the previous extent plus this percentage increase. This parameter is only relevant when using old Dictionary Managed tablespaces.
What is tablespace in data warehouse?
A table space is a storage structure containing tables, indexes, large objects, and long data. They are used to organize data in a database into logical storage groupings that relate to where data is stored on a system. Table spaces are stored in database partition groups.
What is Plsql storage class?
Purpose. The storage_clause lets you specify how Oracle Database should store a database object. Storage parameters affect both how long it takes to access data stored in the database and how efficiently space in the database is used.
What is full form of 11g?
Oracle 10g, 11g 10g and 11g stands for GRID. Starting in 2003 with version 10g and 11g, G signifies “Grid Computing” with the release of Oracle10g in 2003. Oracle 10g was introduced with emphasis on the “g” for grid computing, which enables clusters of low-cost, industry standard servers to be treated as a single unit.
What is Pctfree in db2?
The PCTFREE clause specifies the percentage of each data page in a table space that is left free when loading or reorganizing the data. For example, the default value for table spaces PCTFREE 5, which means that 5% of each data page is kept free when you load or reorganize the data.
What is high water mark in Oracle?
High water mark is the maximum amount of database blocks used so far by a segment. This mark cannot be reset by delete operations.
What uses PCT?
PCTUSED is a block storage parameter used to specify when Oracle should consider a database block to be empty enough to be added to the freelist. Oracle will only insert new rows in blocks that is enqueued on the freelist.
What is PCT free?
PCTFREE is a block storage parameter used to specify how much space should be left in a database block for future updates. For example, for PCTFREE=10, Oracle will keep on adding new rows to a block until it is 90% full.