Management Utility Reference
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Management Utility Reference
Describes the command-line management utilities provided with Greenplum Database.
The following are the Greenplum Database management utilities.
gpchecknet (deprecated) gpcheckos (deprecated) gpdetective (deprecated) gp_dump (deprecated) |
gprebuildsystem (deprecated) gp_restore (deprecated) gpsizecalc (deprecated) gpskew (deprecated) |
Backend Server Programs
The following standard PostgreSQL server management programs are provided with Greenplum Database and reside in $GPHOME/bin. They are modified to handle the parallelism and distribution of a Greenplum Database system. You access these programs only through the Greenplum Database management tools and utilities.
Program Name | Description | Use Instead |
---|---|---|
initdb | This program is called by gpinitsystem when initializing a Greenplum Database array. It is used internally to create the individual segment instances and the master instance. | gpinitsystem |
ipcclean | Not used in Greenplum Database | N/A |
gpsyncmaster | This is the Greenplum program that starts the gpsyncagent process on the standby master host. Administrators do not call this program directly, but do so through the management scripts that initialize and/or activate a standby master for a Greenplum Database system. This process is responsible for keeping the standby master up to date with the primary master via a transaction log replication process. | gpinitstandby, gpactivatestandby |
pg_controldata | Not used in Greenplum Database | gpstate |
pg_ctl | This program is called by gpstart and gpstop when starting or stopping a Greenplum Database array. It is used internally to stop and start the individual segment instances and the master instance in parallel and with the correct options. | gpstart, gpstop |
pg_resetxlog | DO NOT USE Warning: This program might cause data loss or cause data to become unavailable. If this program is used, the Pivotal Greenplum Database cluster is not supported. The cluster must be reinitialized and restored by the customer. |
N/A |
postgres | The postgres executable is the actual PostgreSQL server process that processes queries. | The main postgres process (postmaster) creates other postgres subprocesses and postgres session as needed to handle client connections. |
postmaster | postmaster starts the postgres database server listener process that accepts client connections. In Greenplum Database, a postgres database listener process runs on the Greenplum master Instance and on each Segment Instance. | In Greenplum Database, you use gpstart and gpstop to start all postmasters (postgres processes) in the system at once in the correct order and with the correct options. |