kilobyte megabyte

identify each redo log file each time the Oracle server begins to write to the log groupC. The current log sequence number is stored in the header of the control file and all data files3. How does redo log work?1) Redo logs are used in a circular manner2) When a redo log file is full, the LGWR process moves to the next log groupA. This step is called log switchB.checkpoint occurs at this timeC. Information is written to the control file3) The following conditions will trigger the LGWR process w

: Querying I0 information for SQL The parameters are described as follows: Parameter descriptionnum_physical_disksapproximate number of physical disks in the database storage (Physical disk count input) max_ Latencymaximum tolerable latency in milliseconds for database-block-sized IO requests (maximum available tolerance delay of milliseconds input) max_ Iopsmaximum number of I/O requests per second that can is sustained. The I/O requests is randomly-distributed, database-block-siz

when multiple data files are available; FileName is the path and name of the data file; Size Specifies the file sizes, using K to specify the size of the kilobytes, and M to specify the megabyte size; The Autoextend clause is used to enable or disable automatic extension of the data file, set to on to automatically expand when the space is used, and set to off it is easy to have a table space remaining capacity of 0, so that data can not

Specifies the file sizes, using K to specify the size of the kilobytes, and M to specify the megabyte size; The Autoextend clause is used to enable or disable automatic extension of the data file, set to on to automatically expand when the space is used, and set to off it is easy to have a table space remaining capacity of 0, so that data can not be stored in the database. Example: Creating an autogrow tablespace GEEKSSS SQL statements are a

obvious that this is not a good database design. D. Free_space_in_bytes can be used to view the page idle situation. SELECT db_name(database_id),SUM(free_space_in_bytes)/ 1024x768 as 'free_kb' fromsys.dm_os_buffer_descriptorsWHEREdatabase_id 32767 GROUP bydatabase_idORDER by SUM(free_space_in_bytes)DESC GO E. Tables that contain varchar, nvarchar, varbinary, or sql_variant columns are not constrained by this restriction. There are further explanations on MSDN for row overflow data over 8