the data object
Partition_number
Partition code
Rows
Approximate number of rows of data
hobt_id
Storage unit ID of the heap or B-tree where the data is stored
Let's find a database to look at the fragmentation situation:You can see that the arrows refer to this row of data, the theory should be a zone on it, but in fact it establishes two partitions ... So this situation can be considered to defragment, to rebuild, to release deb
Most websites in the PHP guestbook (with the display function of Oracle Database paging) will consider the interaction with users. In this case, the message board function allows users to stay on this tour or interact with the website. In terms of design, you can leave only users' short messages, or design a complex Web BBS system based on its nature. Of course, how to create a message board for your website depends on the nature of the website and th
≤8)
Ext_size
Size of the extents, in page units
object_id
The ID of the database object
index_id
Represents the type of the data object
Partition_number
Partition code
Rows
Approximate number of rows of data
hobt_id
Storage unit ID of the heap or B-tree where the data is stored
Let's find a database to look at the fragmentation situation:You can see that the arrows refer to
Tags: href database ebook client use more university L database learningSQL injection attack is a long-standing, but growing security threat in recent years, "Security Technology Classic Translation Bundle: SQL injection attack and Defense (2nd edition)" is committed to deep discussion of SQL injection problem."Security Technology Classic Translation Bundle: SQL
oracle| Page | data | database | Most of the sites will take into account the interaction between users. At this time, with the message version of the function, allows users to stay here, or some of the interaction with the site information.
In the design, it can be very simple to leave only the user's short message, can also be designed to classify the nature of a very complex Web BBS system. Of course, how to create a message version of their own we
Most websites take into account the interaction with users. At this time, with the message version of the function, allows users to stay here, or some of the interaction with the site information.In the design, it can be very simple to leave only the user's short message, can also be designed to classify the nature of a very complex Web BBS system. Of course, how to create a message version of their own website, on the nature of the site and Web site developers ingenuity.
The example presented h
Oracle Enterprise Linux (v5.7)-(3/5) http://www.cnblogs.com/chanchifeng/p/6818010.html in VMware [Learn] Installing Oracle Enterprise Linux (v5.7)-(4/5) http://www.cnblogs.com/chanchifeng/p/6818039.html in VMware [study hard] Install Oracle Enterprise Linux (v5.7)-(5/5) http://www.cnblogs.com/chanchifeng/p/6818191.html in VMware [
hard] Install Oracle Enterprise Linux (v5.7)-(2/5) in VMware http://www.cnblogs.com/chanchifeng/p/6817951.html [study hard ] Install Oracle Enterprise Linux (v5.7)-(3/5) http://www.cnblogs.com/chanchifeng/p/6818010.html in VMware [Learn] Installing Oracle Enterprise Linux (v5.7)-(4/5) http://www.cnblogs.com/chanchifeng/p/6818039.html in VMware [study hard]
Oracle user password.
Check the limits.conf file parameters, in my version, there is no need to change.
But to add a line of Oracle stack 10240
Check the sysctl.conf parameter and do not need to modify it in my version.
Finally, run the next file.
[Learn] Install Oracle Enterprise Linux (v5.7)-(1/5) http://www.cnblog
Oracle's classic Oracle books:
Effective Oracle by-by Thomas Kyte
Tom's another classic, in this book, Tom proposed a DBA should not be a fireman, but should be able to prevent problems from the source of the emergence of ...
The following principles are presented in the effective Oracle,tom:
Tuning before you start
Enterprise Linux (v5.7)-(5/5) http://www.cnblogs.com/chanchifeng/p/6818191.html in VMware [book next] Installing DB in Oracle Enterprise Linux (v5.7) http://www.cnblogs.com/chanchifeng/p/7137490.html [book next] in Oracle Enterprise Linux (v5.7) installs DB-(2/4) http://www.cnblogs.com/chanchifeng/p/7137512.html
Oracle's classic Oracle books:
Oracle 8i Backup and Recovery by Rama Velpuri, Anand Adkoli, George Williams
For the classic backup recovery process, if you want to learn more about Oracle's backup recovery mechanism, you must read this book ...
The electronic version of this book can be found on the china-pub (but may
oracle| Page | data | database | Most of the sites will take into account the interaction between users. At this time, with the message version of the function, allows users to stay here, or some of the interaction with the site information.
In the design, it can be very simple to leave only the user's short message, can also be designed to classify the nature of a very complex Web BBS system. Of course, how to create a message version of their own w
Original: SQL Server Enterprise Platform Management Practice book notes-backup and recovery of several system librariesmaster databaseMaster acts as the primary database for the database, documenting all system-level information for the SQL Server system, such as logged-on users, System configuration settings, endpoints and credentials, and the information needed
included with SQL ServerDatabase
Not supported
The resource database is located in the Mssqlsystemresource.mdf file,The file contains nearly the code. Therefore, SQL Server cannot back up the resource database.However, it can be done through file backup and backup to disk, and not through SQL Server when restoring.To restore these backups, you ca
is BASE64 encoded. Can let the text of the strange characters disappear, of course, this is the saw arrows, but for the WEB program, the implementation of fast, easy to modify is the most important, there is no need to waste energy to deal with these Chinese punching code problem. It is worth noting that the use of BASE64 encoding, will allow the string expansion of about 1/3, if the database storage space is limited, may not be suitable for this method, and then said back, now the hard disk is
Oracle Core Technology notes (this book is not carefully read, so you need to read it later ~~)Oracle Core Technology jump to: navigation, search
DirectoryStart 12redo and undo3. Transactions and consistency4. locks and latches5 cache and copy6. Write and restore7. Analysis and Optimization8RAC and 'defect'9 appendix A dump and debugging
At the begi
. The WHERE and order statements of the LEFT join can be written after the on statement9, the internal connection is equivalent to the direct where two table fields are equal, only two tables matching data appearsFully connected two tables all records appear, mismatched items are displayed as nullThe left and right connections can be written in the where association, just like the normal two tables, but with the (+) in front of the table condition:Select a.code_id,b.* from AD_HP A, Bureau bwhere
oracle, you can obtain the information by querying the oracle Data dictionary. The advantage of doing so is that it is convenient to view the table structure in the future and you do not need to find it from the database documentation. It is of application significance for team development.
/* ===================================================== =========== */
/* Table: EMP */
/* =========================
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