Useful PostgreSQL commands

Check whether PostgreSQL is running

Linux:

If PostgresSQL is running, you see multiple lines of output. If it is not running, you see nothing.

Windows:

Open the Windows Task Manager. Look for PostgreSQL processes running on the server.

Access PostgreSQL on the primary server

Linux:

/aiw/aiw1/bin/postgresql/Linux/pgsql/bin/psql databasePostgreSQL_user_name or /usr/pgsql-14/bin/psql database PostgreSQL_user_name

For example, if you use the default values for Database and User name on the Database settings page, enter:

/aiw/aiw1/bin/postgresql/Linux/pgsql/bin/psql history rpdreports or /usr/pgsql-14/bin/psql history rpdreports

Windows:

C:\aiw\aiw1\bin\postgresql\Windows\pgsql\bin\psql databasePostgreSQL_user_name or <RPD Install Directory>\PostgreSQL\bin\pg_psql database PostgreSQL_user_name

For example, if you use the default values for Database and User name on the Database settings page, enter:

C:\aiw\aiw1\bin\postgresql\Windows\pgsql\bin\psql history rpdreports or <RPD Install Directory>\PostgreSQL\bin\pg_psql history rpdreports

Expected output:

After accessing PostgreSQL

Use these commands to retrieve information about the database, database tables, and contents:

\d

List the database tables that exist on the system.

\dt rpt.*

List the databases on the system that are in the rpt schema. Any databases that you migrate from the DB2 database that older versions of the Reports fieature used to save data are in this schema.

\d+ database_table_name

Show the format of the specified table. For example, \d+ job_history shows that format of the job_history database table.

select * from database_table_name;

List all data from the specified table.

select column_name[,column_name2,column_name3,...] from job_history;

List the data from the specified columns in the requested table.

COPY database_table_name TO 'directory_path_and_filename' DELIMITER ',' CSV HEADER;

Write data stored in the database to a CSV file.

For database_table_name, type the name of the PostgreSQL database table that you defined as the value of the Database table name property in the data collector.

For directory_path_and_filename, type the full directory path and name of the CSV that you want to capture the data to.

This example captures data in the job_history table and exports it in CSV format to the test.csv file in the /aiw/aiw1 directory:

COPY job_history TO '/aiw/aiw1/test.csv' DELIMITER ',' CSV HEADER;

\q

Exit PostgreSQL.

Stop the PostgreSQL database

Open a command prompt and type this command:

On a Windows server:

• \aiw\aiw1\bin\postgresql\Windows\pgsql\bin\pg_ctl stop -o "-p 5432" -U rpdreports -P testpassword -D \aiw\aiw1\data -l \aiw\aiw1\trace\postgres.trace

  or

• <RPD Install Directory>\PostgreSQL\bin\pg_ctl stop -o "-p 5432" -U rpdreports -P testpassword -D \aiw\aiw1\data -l \aiw\aiw1\trace\postgres.trace

On a Linux server:

• /aiw/aiw1/bin/postgresql/Linux/pgsql/bin/pg_ctl stop -o "-p 5432" -U rpdreports -P testpassword -D /aiw/aiw1/data/ -l /aiw/aiw1/trace/postrgres.trace

  or

• /usr/pgsql-14/bin/pg_ctl stop -o "-p 5432" -U rpdreports -P testpassword -D /aiw/aiw1/data/ -l /aiw/aiw1/trace/postrgres.trace

Start the PostgreSQL database

On a Windows server:

• \aiw\aiw1\bin\postgresql\Windows\pgsql\bin\pg_ctl start -o "-p 5432" -U rpdreports -P testpassword -D \aiw\aiw1\data -l \aiw\aiw1\trace\postgres.trace

  or

• <RPD Install Directory>\PostgreSQL\bin\pg_ctl start -o "-p 5432" -U rpdreports -P testpassword -D \aiw\aiw1\data -l \aiw\aiw1\trace\postgres.trace

On a Linux server:

• /aiw/aiw1/bin/postgresql/Linux/pgsql/bin/pg_ctl start -o "-p 5432" -U rpdreports -P testpassword -D /aiw/aiw1/data/ -l /aiw/aiw1/trace/postrgres.trace

  or

• /usr/pgsql-14/bin/pg_ctl start -o "-p 5432" -U rpdreports -P testpassword -D /aiw/aiw1/data/ -l /aiw/aiw1/trace/postrgres.trace