image is: 20090807082 755 ############### start backup and restoration #################### ########## ****************** cold backup and restoration ********** * ******************** DB2 => Backup dB Yan to/home/db2inst1/backupbackup successful. the timestamp for this backup image is: 20090807083306db2 => insert into test values (2, 'hui', 'hui') [db2inst1 @ Yan ~] $ CP archivelog/node0000/* log -- copy the archive log to
The following articles mainly describe the basic knowledge of DB2 data types. We all know that DB2 has multiple built-in data types, including. Numeric), string character string), graphic string), binary string) or datetime ).
There is also a special data type called DATALINK. The DATALINK value contains logical references to files not stored in the database.
Numeric DB
How does db2 rename a table ?, How does db2 rename a table?How does db2 rename a table?
Set The current schema: db2 => set schema db2adminDB20000I The SQL command completed successfully. if the command contains schema, the following error occurs: db2 => rename table db2admi
tablespace with a page size of 4K, and you can create additional user temporary table space with a larger page size, which is automatically used by the system.You cannot change the data type of a field with the ALTER statement, and you can change the data length for some fields, which is more restrictive than ORACLE,DB2.Can be used: select expression from Sysibm.sysdummy; Instead, the following statements are equivalent: the values expression;Table a
Add-Find)DB2 CREATE DATABASE name create a new database under the current instanceDB2 List DB directory displays all databases for the instanceDB2 drop DATABASE Database name Delete oneDB2 Connect to As the database is created, several default objects are also created: Table space, table, buffer pool, log file.The default number of table spaces is as follows (basic and Oracle almost, except for names only)
configuration parameters in the command line?
View instance configuration parameters: db2 get dbm cfg
Modify instance configuration parameters: db2 update dbm cfg using parameter name New Value
View database configuration parameters: db2 get db cfg
Modify database configuration parameters: db2 update db cfg
The db2 tutorial is: Install the DB2 database. This is installed on AIX in the IBM RS6000 operating system, and the HP9000 is the same
1. Register as a user with Super User Permissions (root)2. Insert the software CD labeled "DB2 General Database Enterprise Edition" into the drive3. Enter the following command to create a directory to install the CD-ROM:# Mkdir-
Label:1. Unzip the DB2 installation package tar -zxvf v9.7_linuxx64_server. tar. gz 2. Enter the server directory to perform the installation check CD server
. /db2prereqcheck 3. Run the Setup program [[Email protected]]./Db2_install Do you want to select another directory for installation? [Yes/No]--Enter no default installation opt, select Yes to enter the installation directory to specify one of the following keywords to install the
There are many ways to uninstall DB2. Next we will introduce you to the DB2 detach method in abnormal circumstances. If you do not know the DB2 detach method well, take a look.
Troubleshooting DB2 uninstall Method
1) run the SETUP program from the original installation disk
If You Cannot uninstall
The db2 tutorial is: Install the DB2 database. This is installed on AIX in the IBM RS6000 operating system, and the HP9000 is the same1. Register as a user with Super User Permissions (root)2. Insert the software CD labeled "DB2 General Database Enterprise Edition" into the drive3. Enter the following command to create a directory to install the CD-ROM:# Mkdir-p/
Tags: User One users MIT action system meaning commit tool definitionDB2 supports session temp table. The table can only exist in a session or in a transaction context and is not visible to other users. DB2 V8 adds support for indexing of temporary tables, which is useful for increasing query speed.The following example illustrates the use of the session temp table:1. Before creating a session temp table, you must create a temporary table spaceCreate
How can I view the physical files corresponding to the db2 tablespace ?, View db2How can I view the physical files corresponding to the db2 tablespace? Refer to the following:
[db2inst1@db MYDB]$ db2 connect to mydb Database Connection Information Database server = DB2/LINUXX8664 9.7.0 SQL authorization ID =
It is not recommended to use control center tools and
DB2 Management Server (DAS)
From version 9.7, it is not recommended to use the control center tool and DAS, which may be removed from future releases. Now a newGUI tool kit for managementDB2LinuxAndThese tools can be used for Windows data and data-centric applications.Details
The following control center tools and related functional components are not recommended:
Activity monitor
Command Editor
Fast-changing application environments require a flexible mechanism for storing data and passing data between different application tiers. As it turns out, JSON (Java Script Object notation) is an important technology for moving, interactive applications that reduces the overhead of pattern design and eliminates the need for data conversion.
DB2 NoSQL JSON enables developers to write applications using the JSON-oriented popular query language created
the following command examples on any database in the instance:
Db2start/db2stop
DB2 create/DROP DATABASE
DB2 create/drop tablespace
DB2 backup/restore/rollforward Database
DB2 runstats (This command can be executed on any table)
DB2 update dB CFG for
In DB2, when the days of God are gone, SYSADM has clearly defined the division of roles.
With database-level SECADM, DBADM assigned to SYSADM will certainly be removed;
SECADM can now be allocated to ROLE and GROUP;
SECADM can now grant/cancel database and object authentication;
DBADM can be created in this way, so it cannot see data or perform authorization/Revoke authorization;
DBADM cannot obtain indirect permissions;
New permissions are created,
100. How do I delete a sequence?Dropsequencesequence_name 101.DB2 the file format that supports importing (import) has?There are: del,asc,ixf,wsf, etc. 102.DB2 the file format that supports exporting (export) has?There are: Del,ixf,wsf and so on.The ASC format is not supported. 103.DB2 support Load (load) file fo
: ~> Db2 prune history 20100103235553 DB20000I The PRUNE command completed successfully. db2inst1 @ suse-db: ~> Db2 list history archive log all for ggyy | head-20 List History File for ggyy Number of matching file entries = 5 Op Obj Timestamp + Sequence Type Dev Earliest Log Current Log Backup ID ----------------------- ---- --- ------------ -------------- x d 20100103235608 1 D S0000039.LOG C0000007 certi
Db2 cmd command operation 1. Open the command line window # db2cmd 2. Open Control Center www.2cto.com # db2cmd db2cc 3. Open the command editor db2cmd db2ce ==== operate database commands ==== = 4. Start the database instance # db2start 5. Stop the database instance # db2stop if you cannot stop the database due to the activated connection, run db2 force application all before running db2stop./db2stop force
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