shrink vdi

log, which can result in data loss in the event of a disaster. For recovery Mode for Full/bulked-log, each backup Log operation automatically executes the checkpoint operation, emptying the committed logical log space. In other words, we can maintain a controllable transaction log file size through periodic log backups. Open Query Analyzer and execute the following query:Now perform a log backup of the database and then execute the loginfo command:You can see that the status of the log

Tags: c blog http a int widthHow SQL Server truncates (Truncate) and shrinks (Shrink) transaction log classifications: SQL Server database backup restore 2010-01-25 14:321,708 people read comments (4) ReportWhen SQL Server truncates the transaction log, it simply marks the virtual log file so that it is no longer used, and then prepares it for reuse as a backup (if carried in a full or bulk-logged recovery model). In other words, when using the simple

VMware virtual machines in use, as software and data increase, the virtual disk occupies a larger amount of hard disk space, but after the data is deleted, it does not automatically reduce the physical hard disk space occupiedInstead, it continues to occupy the appropriate size. If you need to solve the above problem, you need to shrink the wmware virtual disk, the author summarizes the commonly used three methods, respectively, as follows:WMware vers

Tags: rebuild call dex space Build table Management gem row migrate OracleALTER TABLE t move and ALTER TABLE t shrink space can be used for segment shrinkage, reducing high water HWM,can also be used to eliminate row Chaining and row migration (row migration),But there are the following differences:1) using ALTER TABLE move, the table is shrunk to the initial size specified by the storage clause when the table was created, and the ALTER table

Tags: value type in file equals system disk FOREIGN KEY constraint UID logical differenceIn the software testing, the database is the necessary knowledge, holiday busy stealing busy, organized a little study notes, and discuss together.Read CatalogueBasic knowledge History of Database Database nouns SQL composition Basic operations Log on to database operations Database Remote Connection operation Database Detach operation Database offline, online op

Oracle shrinktable shrink table Use Cases There is a serious shortage of External table space in the site, and the customer does not want to resize it. To clean up some data, it is a large field blob. the tablespace is 1 TB and 0.99 TB has been used. After the blob before December 31, is deleted, GB of data is found in the basic information table of the attachment. However, the tablespace is not released (high water level line ), there are several way

Last time we had a look at the specific usage of flex-grow, this week, let's see flex-basis this property. Flex-shrink Define the scaling of the project, with the default value of 1, and note that the project shrinks if there is insufficient space. The value is 0 and does not shrink. The attribute is not defined in the following example, but the project shrinks by default if there is insufficient spac

Shrink u disk, also known as "expansion Disk", "Upgrade disk." Refers to unscrupulous manufacturers use a mass production tool software, change the main control information on U disk, the U disk capacity is marked much larger than its actual capacity, to defraud the consumer means profiteering. When the actual capacity of the U disk is less than or equal to its nominal 90%, that is identified as the existence of quality problems of the

SQL 2008 log Files account for 23G of hard disk space, and the transaction log has been truncated (Truncate), the actual log content is small, 1G is not, want to release the extra space occupied by the log files. However, no matter how you shrink (Shrink) log files, space is not free and always error occurs: cannot shrink log file 2 (Cnblogstext_log) Because of

Tags: mysql5.7 undo log Table Space ReclamationThe Undo log rollback log is saved in the shared tablespace ibdata1 file, and as the business keeps running, the ibdata1 file becomes larger and more difficult and complex to reclaim (shrinking space size), you must first mysqldump-a the entire library and then delete the data directory, Then re-initialize the installation, and finally the whole library of SQL file import, using this method to Ibdata1 file recovery.In MySQL5.6, the Undo log rollback

Each file in the database can be reduced by removing unused pages. Although the database engine is effectively re-using space, shrinking a file becomes necessary after multiple occurrences of a file without the original size. Both the data and transaction log files can be reduced (shrunk). You can manually shrink the database files either in groups or individually, or you can set the database to shrink auto

Starting from 10 Gb, oracle began to provide Shrink commands. If our tablespace supports automatic segment space management (ASSM), we can use this feature to narrow down the segment, that is, reduce the HWM. Segment shrink is divided into two phases: 1. Data restructuring (compact): through a series of insert and delete operations, data is arranged in front of the segment as much as possible. In this proce

CSS flex-shrink attribute of Flexble elastic box model, flexshrinkcss3Instance Shrink the second element to 1/3 of other elements: Effect Preview div:nth-of-type(2){flex-shrink:3;} 　　Browser support The number in the table indicates the version number of the first browser that supports this attribute. The number following-webkit-,-ms-, or-moz-is the first version

Flex layout in Flex-basis|flex-grow|flex-shrinkThe three attributes of Flex-grow, Flex-shrink, and flex-basis are: In the flex layout, the parent element is at different widths, and the child element is allocated the space of the parent element.Of these, these three properties are set on child elements.Note: The following parent element refers to the element with Flex layout (Display:flex).Flex-basisthe property to set the width of the element. Of cou

1 move Experiment SQL> Create Table my_objects_move tablespace assm as select * From all_objects where rownum Table created SQL> Create index I _my_objects_move on my_objects_move (object_id ); Index created SQL> Delete from my_objects_move where object_name like '% C % '; 7546 rows deleted SQL> Delete from my_objects_move where object_name like '% u % '; 2959 rows deleted SQL> commit; Commit complete SQL> ALTER TABLE my_objects_move move; Table altered SQL> select index_name, status 2 from u

Problem Descriptionfound that the database log file is too large, no matter how many times the contraction execution of SQL statements. Transaction log up to 30+g, and the use of conventional truncation, shrinkage method can not reduce the size of the log physical file, after some search, finally found a solution.Viewing log informationExecute the following code in Query Analyzer to view the log information: DBCC loginfo (' Database name ')We see status=0 logs, which represent log files that hav

Reprinted from: http://blogs.msdn.com/b/ialonso/archive/2012/10/08/ Inaccurate-values-for-currently-allocated-space-and-available-free-space-in-the-shrink-file-dialog-for-tempdb-only.aspxInaccurate values for ' currently allocated space ' and ' Available free space ' in the Shrink File dialog for TEMPDB onlyRate this Nacho Alonso Portillo 8 Oct 4:47 AM 2 Last week I went to a customer who sh

Note: Today, when using Swiper.js to do the product carousel, encountered in the use of Flexbox under the premise of the child element set flex:1; All child elements are squeezed in the first phase (not executed to swipe);The reason is because there is no setting:flex-shrink property.Flex-shrink:Default value : 1applies to : Flex subkeyInheritance : NoneAnimation : YesCalculated value : Specify a valueValue: defines the shrinkage ratio u

Starting from 10 Gb, oracle began to provide Shrink commands. If our tablespace supports automatic segment space management (ASSM), we can use this feature to narrow down the segment, that is, reduce the HWM. Here we need to emphasize that this new 10g feature is only valid for the ASSM tablespace, otherwise the ORA-10635: Invalid segment or tablespace type will be reported. Here, we will discuss how to recycle wasted space for an ASSM segment. Simila

Experiment: Comparison of redo logs generated by table shrink and move in Oracle Experiment: Comparison of redo logs generated by table shrink and move in Oracle 1 move ExperimentSQL> create table my_objects_move tablespace ASSM as select * from all_objects where rownum Table created SQL> select value 2 from v $ mystat, v $ statname 3 where v $ mystat. statistic # = v $ statname. statistic # 4 and v