IBM DB2 database: Running commands for regular maintenance

The following IBM DB2 commands are recommended for regular maintenance of your LiveCycle database. For detailed information about maintenance and performance tuning for your DB2 database, see IBM DB2 Administration Guide.

  • runstats: This command updates statistics that describe the physical characteristics of a database table, along with its associated indexes. Dynamic SQL statements generated by LiveCycle automatically use these updated statistics, but static SQL statements built inside a database require that the db2rbind command be run as well.

  • db2rbind: This command rebinds all the packages in the database. Use this command after running the runstats utility to revalidate all packages in the database.

  • reorg table or index: This command checks whether a reorganization of some tables and indexes is required.

    As your databases grow and change, recalculating table statistics is critical to improving database performance and should be done regularly. These commands can be run either manually by using scripts or by using a cron job.

Note: Before you run the runstats command, the database must contain data, and at least one directory synchronization must have been performed.

For a small database, such as for 10,000 users or 2,500 groups, it is sufficient to invoke the runstats command to reduce the sync timings.

For larger databases, such as for 100,000 users or 10,000 groups, run the reorg command before you run the runstats command.

Use the runstats command on your LiveCycle database

Run the runstats command on the following LiveCycle database tables and indexes.

Note: The runstats command needs to be run only during the first database synchronization. However, it must be run twice during that process: once during the synchronization of Users and Groups and then during the synchronization of Group Members. Ensure that the script executes completely each time you run it.

For correct syntax and usage, see the database manufacturer’s documentation. Below, <schema> is used to denote the schema that is associated with your DB2 user name. If you have a simple default DB2 installation, this is the database schema name.

    TABLE <schema>.EDCPRINCIPALGROUPENTITY 
 
    TABLE <schema>.EDCPRINCIPALGRPCTMNTENTITY 
 
    TABLE <schema>.EDCPRINCIPALENTITY 
 
    TABLE <schema>.EDCPRINCIPALUSERENTITY 
 
    TABLE <schema>.EDCPRINCIPALEMAILALIASENTITY 
 
    TABLE <schema>.EDCPRINCIPALENTITY FOR INDEXES ALL 
 
    TABLE <schema>.EDCPRINCIPALEMAILALIASENTITY FOR INDEXES ALL 
 
    TABLE <schema>.EDCPRINCIPALUSERENTITY FOR INDEXES ALL 
 
    TABLE <schema>.EDCPRINCIPALGROUPENTITY FOR INDEXES ALL 
 
    TABLE <schema>.EDCPRINCIPALGRPCTMNTENTITY FOR INDEXES ALL

Run the reorg command on your LiveCycle database

Run the reorg command on the following LiveCycle database tables and indexes. For correct syntax and usage, see the database manufacturer’s documentation.

    TABLE <schema>.EDCPRINCIPALGROUPENTITY 
 
    TABLE <schema>.EDCPRINCIPALGRPCTMNTENTITY 
 
    TABLE <schema>.EDCPRINCIPALENTITY 
 
    TABLE <schema>.EDCPRINCIPALUSERENTITY 
 
    TABLE <schema>.EDCPRINCIPALEMAILALIASENTITY 
 
    INDEXES ALL FOR TABLE <schema>.EDCPRINCIPALENTITY 
 
    INDEXES ALL FOR TABLE <schema>.EDCPRINCIPALEMAILALIASENTITY 
 
    INDEXES ALL FOR TABLE <schema>.EDCPRINCIPALUSERENTITY 
 
    INDEXES ALL FOR TABLE <schema>.EDCPRINCIPALGROUPENTITY 
 
    INDEXES ALL FOR TABLE <schema>.EDCPRINCIPALGRPCTMNTENTITY

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