db2 runstats

Tags: Ror sql RTrim (schema PAC tables err sel catDB2 reorg runstats rebind specific operation #reorg tableDb2-x "SELECT ' reorg table ' | | RTrim (Tabschema) | | tabname| | '; ' from syscat.tables where type= ' T ' "> Reorg.sql #reorg IndexDb2-x "SELECT ' reorg indexes all for table ' | | RTrim (Tabschema) | | tabname| | '; ' from syscat.tables where type= ' T ' "> Reorg_index.sql #runstats tableDb2-x "SEL

Runstats is a script developed by Thomas Kyte that compares the two different methods of doing the same thing to get a better result.1. AuthorizationSelect On v_$statname to Livan; Grant succeeded. SQLSelect on v_$mystat to Livan; Grant succeeded. SQLSelect on v_$timer to Livan; Grant succeeded. SQLSelect on v_$latch to Livan; Grant succeeded.2. Create a ViewSql> Conn livan/Livanconnected.sql>Create or replace view stats2 as Select 'STAT ...'||a.nam

Runstats can compare two different methods for the same thing to find out who is better. We only need to provide two different methods, and runstats is responsible for the rest of the tasks. Runstats is only a measurement of three elements: 1. Time consumed. 2. system statistics: displays the number of times each method performs something (such as executing a res

: # cd/usr/lpp/db2_07_01/instance #./db2idrop Instname List all DB2 instances: Copy Code code as follows: # Cd/usr/lpp/db2_07_01/bin #./db2ilist Create a catalog for a database Copy Code code as follows: $ DB2 Catalog DB Btpdbs On/db2catalog Canceling a cataloged database Btpdbs Copy Code code as follows: $

from TAB76.IXF of Ixf Commitcount, insert into Achact"DB2 "CREATE table achact_t like Achact"DB2 "Rename table achact_t to Achact"DB2 "INSERT INTO achact_t select * from Achact where txndt>= (select Lstpgdt fromAcmact where Actno=achact.actno) "DB2 get snapshot for Dynaimic SQL on Jining To delete an instance: # cd/us

/usr/lpp/db2_07_01/instance #./db2idrop Instname List all DB2 instances: # Cd/usr/lpp/db2_07_01/bin #./db2ilist Create a catalog for a database $ DB2 Catalog DB Btpdbs On/db2catalog Canceling a cataloged database Btpdbs $ DB2 Uncatalog DB Btpdbs View version # Db2level Show current Database Admin instance $ DB2 Get Ins

timely manner? To ensure that the DB2 optimizer works properly, the following methods are provided in DB2. RUNSTATS and REOGCHK The Runstats command is mainly used to collect the status information of database objects, which is crucial for the database to use a reasonable access plan. In general, we need to use

. Others include partition/node group information and table space information. How can we update this information in a timely manner? To ensure that the DB2 optimizer works properly, the following methods are provided in DB2. RUNSTATS and REOGCHK The Runstats command is mainly used to collect the status information of

information in a timely manner? To ensure that the DB2 optimizer works properly, the following methods are provided in DB2. RUNSTATS and REOGCHK Runstats are mainly used to collect the status information of database objects, which is crucial for the database to use a reasonable access plan. In general, in the followin

timely manner? To ensure that the DB2 optimizer works properly, the following methods are provided in DB2. 1. RUNSTATS and REOGCHK The Runstats command is mainly used to collect the state information of database objects, which is crucial for the DB2 database to use a reason

-v "Select Tbname, Nleaf, Nlevels, Stats_timefrom sysibm.sysindexes" Db2-v Terminate 28. Run statistics on a table Db2-v Runstatson Table Tab_nameand Indexes all 29. See if Runstats has been executed on the database Db2-v "Select Tbname, Nleaf, Nlevels, Stats_timefrom sysibm.sysindexes" 30. Change the size

#./Db2ilistCreate a catalog for a database$ DB2 catalog dB btpdbs on/db2catalogCancel the compiled destination database btpdbs$ DB2 uncatalog dB btpdbsView version# Db2levelDisplays the current database management instance$ DB2 get instanceSet whether the instance is automatically started when the system starts.$ Db2iauto-on automatic start$ Db2iauto-off does not

:# Cd/usr/lpp/db2_07_01/bin#./db2ilistCreating catalogs for databases$ DB2 Catalog DB Btpdbs On/db2catalogCanceling a cataloged database Btpdbs$ DB2 Uncatalog DB BtpdbsView version# Db2levelDisplay the current database management instance$ DB2 Get InstanceSets whether the instance system starts automatically when it starts.$ db2iauto-on Auto-start$ db2iauto-off d

Lstpgdt fromAcmact where Actno=achact.actno) "DB2 get snapshot for Dynaimic SQL on JiningTo delete an instance:# cd/usr/lpp/db2_07_01/instance#./db2idrop InstnameList all DB2 instances:# Cd/usr/lpp/db2_07_01/bin#./db2ilistCreating catalogs for databases$ DB2 Catalog DB Btpdbs On/db2catalogCanceling a cataloged database Btpdbs$

/db2_07_01/bin#./db2ilistCreating catalogs for databases$ DB2 Catalog DB Btpdbs On/db2catalogCanceling a cataloged database Btpdbs$ DB2 Uncatalog DB BtpdbsView version# Db2levelDisplay the current database management instance$ DB2 Get InstanceSets whether the instance system starts automatically when it starts.$ db2iauto-on Auto-start$ db2iauto-off does not start

$ DB2 Catalog DB Btpdbs On/db2catalogCanceling a cataloged database Btpdbs$ DB2 Uncatalog DB BtpdbsView version# Db2levelDisplay the current database management instance$ DB2 Get InstanceSets whether the instance system starts automatically when it starts.$ db2iauto-on Auto-start$ db2iauto-off does not start automaticallyDatabase Optimization Commands:Reorg, Runs

$ DB2 Catalog DB Btpdbs On/db2catalogCanceling a cataloged database Btpdbs$ DB2 Uncatalog DB BtpdbsView version# Db2levelDisplay the current database management instance$ DB2 Get InstanceSets whether the instance system starts automatically when it starts.$ db2iauto-on Auto-start$ db2iauto-off does not start automaticallyDatabase Optimization Commands:Reorg, Runs

InstnameList all DB2 instances:# Cd/usr/lpp/db2_07_01/bin#./db2ilistCreating catalogs for databases$ DB2 Catalog DB Btpdbs On/db2catalogCanceling a cataloged database Btpdbs$ DB2 Uncatalog DB BtpdbsView version# Db2levelDisplay the current database management instance$ DB2 Get InstanceSets whether the instance system

properly, the following methods are provided in DB2. 1. RUNSTATS and REOGCHK The Runstats command is mainly used to collect the status information of database objects, which is crucial for the database to use a reasonable access plan. In general, we need to use runstats to collect statistics in the following situation

information in a timely manner? To ensure that the DB2 optimizer works properly, the following methods are provided in DB2. 1. RUNSTATS and REOGCHK The Runstats command is mainly used to collect the state information of DB2 database objects, which is crucial for the databas