db2 catalog database command

A DB instance exists in two places in the data:1: Physical Location: On disk, which is the file system.2: Logical Location: The database system table, which is the configuration information for the disk file.Procedure for deleting a database:1: Delete the physical file, 2: Delete the logical information, that is, the configuration information of the physical file.The above two places are deleted at the same

Example The following example shows the output that may be obtained when running the ps-ef command on AIX: After db2start:Root 49504 1 0 13:13:07-db2wdogDb2inst1 22142 49180 0 13:13:10-db2gdsDb2inst1 43072 49180 0 13:13:17-db2syslogDb2inst1 45294 74134 0 12:12:43 pts/2/usr/bin/kshDb2inst1 49180 49504 0 13:13:10-db2syscDb2inst1 55920 49180 0 13:13:19-db2resyncDb2inst1 59012 22142 0 13:13:19-db2srvlstDb2inst1 60680 49180 0 13:13:17-db2ipccm The

1. [odsuser @ localhost ~] $ Db2stopSQL1025NThedatabasemanagerwasnotstoppedbecausedatabasesarestillactive2. [odsuser @ localhost ~] $ Db2forceapplicationallDB20000ITheFORCEAPPLICATIONcommandcompletedsuccessfully. DB21024ITh 1. [odsuser @ localhost ~] $ Db2stop SQL1025N The database manager was not stopped because databases are still active 2. [odsuser @ localhost ~] $ Db2 force application all DB20000I The

The following articles mainly introduce the DB2 database lock table problem. In actual operations, if the center queries data, pay attention to it. If interactive data query is used, the command center will apply the s lock to the queried records. at this time, if you want to update the record, because update requires the x lock, the exclusive lock will be in the

Successful backups are important for DB2 users, so how do you make sure that your backups are successful? DB2 provides a very simple verification tool DB2CKBKP. To give a simple example: On AIX, we made a backup of a database named sample, backed up with a sample.0.db2inst1.node0000.catn0000.20041123142456.001 file name. Here is the output of our run DB2CKBKP.

IntroductionSometimes you want to temporarily disable a table trigger. For example, although you may need a trigger to perform daily SQL operations, you may not want to trigger those triggers when running a specific script. The standard practice is to delete a trigger and re-create it when you need it again, but it is a bit difficult if you have to track many triggers. Now, where should I save the source code of those triggers ?) This article provides three methods to solve this problem: Metho

Successful backup is very important for DB2 users. How can we ensure that your backup is successful? DB2 provides a very simple verification tool, db2ckbkp. A simple example: on AIX, we made a backup for a database named sample. The backup file name is SAMPLE.0.db2inst1. node).catn).20041123142456.001. Below is the output of running db2ckbkp. if you see success

the test environment. 4, too small buffer pool will produce excessive, unnecessary physical I/O. Too large a buffer pool causes the system to be at risk of operating system page scheduling and consumes unnecessary CPU cycles to manage overallocated memory. The right buffer pool size is on a balance between "too small" and "too big". The appropriate size exists at the point where the return will begin to decrease. --sql to get the best performance A bad SQL statement can completely destroy ev

DB2 Database Use DML (Data manipulation Language commands) Manipulation language DDL (data definition Language commands) database definition language TCC (Transaction control commands) transaction controls language SCC (System control commands) systems controlling language A DML data manipulation language (i) data query

DML (Data Manipulation Language commands) Data Manipulation Language; DDL (Data Definition Language commands) Data Definition Language; TCC (Transaction Control commands) Transaction Control Language; SCC (System Control commands) system Control Language DB2 database usage DML (Data Manipulation Language commands) Data Manipulation Language DDL (Data Definition Language commands) Data Definition Language

) = 1Number of database backups to keep (num_db_backups) = 12Restore history Retention Time (days) (REC_HIS_RETENTN) = 366TSM Management Class (Tsm_mgmtclass) =TSM node name (tsm_nodename) =TSM owner (Tsm_owner) =TSM password (tsm_password) =Automatic maintenance (auto_maint) = OFFAutomatic database backup (auto_db_backup) = OFFAutomatic table maintenance (auto_tbl_maint) = OFFAuto Runstats (auto_runstats)

What is the difference between the three commands of connect reset, disconnect current, and quit in DB2? Or which one can really disconnect after connecting to the DB2? Connect reset literally means "connection reset";Disconnect current literally means "disconnecting the connection";All of the above two commands can disconnect the database;Quit is the exit intera

DB2 in the execution of a large insert/update operation "The transaction log for the ' database is full. "Error, check the document is DB2 's log file is full." Run the following command first to view DB2 log configuration information $

A few knowledge points you must know when using IBM DB2 databases: 1. After installing the DB2 database, you can use the command line or graphical interface to operate, if your database server is not on this computer, you need to be in the "Client Configuration Helper" in t

In the DB2 database, the problem with the character set is primarily the setting of three levels of character set, where system-level and instance-level character sets can be modified according to requirements, while database-level datasets must be determined when the library is being built. (1) Operating system Locale: System-Level code page settings, determini

) and backup files (week)Enter the following command:CRTLIB backCRTSAVF Back/week Uploading Backup files5.1. Log in to the DB2 AS400 server using the FTP tool.5.2. Enter username/password: Qsecofr/password.5.3. Enter the following command:ftp> pwd257 "QGPL" is the current library.Ftp> CD Back257 "Back" is the current library.Ftp> bin (must be uploaded using binary)Representation type is binary IMAGE.ftp> LCD c \Local directory now C:.Ftp> PUT WEEK.

Tags: border code maximum sage token height support Roo requiredDB2 11.1For root installations, the Database Manager uses a formula to automatically adjust kernel parameter settings and Eliminat E The need for manual updates to these settings.Before you beginyou must has root authority to modify kernel parameters. ProcedureTo update kernel parameters on Red Hat and SUSE Linux: Run the ipcs-l command to

Improved application portability in version 9.5 increases compatibility with existing code and no longer requires migrating applications that use databases from other vendors. Version 9.5 includes the following enhancements: Supports the use of array data types in applications that process and invoke procedures. Supports global variables. A global variable is a named memory variable that you can access and modify through an SQL statement. Version 9.5 supports session global variables that have

Oracle 11g RMAN: Interpretation of the command for creating dg in Active Database Duplication for standby database, rmanduplicationIf the production-based duplicate replication is not manually configured with pfile (set memory, process, dg-related configuration parameters, database-related path parameters), various par

and does not exist, there is no error Query OK, 0 rows affected (0.00 sec) 4.4 connect to the database Command: use For example, if the xhkdb database exists, try to access it: Mysql> use xhkdb; On-screen prompt: Database changed The use statement can notify MySQL to use the db_name