SharePlex 12.1 - Installation and Setup Guide

Database Setup for PGDB as a Service

Database Setup for PostgreSQL Database as a Service

Pre-requisites to configure PostgreSQL database setup as a source:

1. Modify the cloud database parameters :

   AWS : rds.logical_replication 1

   Azure : wal_level LOGICAL

2. Add database connection details in the ODBC files in SharePlex var/odbc directory. See the sample screenshot.

3. For all the tables which are going to be part of replication, set the 'replica identity' to 'full' before activation.
   For example: alter table "DEMO_SRC" replica identity full;

Overview

Run the PG Setup utility for PostgreSQL (pg_setup) to establish a user account, schema, and tables for use by SharePlex.

Guidelines for Use

• Run the PG Setup utility on an independent Linux VM from where the PostgreSQL instance is accessible.
• For consolidated replication, run the PG Setup utility for each variable-data directory.

• For PostgreSQL Database as a Service, follow the connection handling best practices recommended by the respective vendor.

• You can provide a DSN (data source name). Note the following when deciding on the connection method on Linux:

  Connection Type on Linux

  What to do

  DSN

  If you have a DSN defined, and you want to use it for the SharePlex connection, copy or link the ODBC files in which that DSN is defined (odbc.ini and odbcinst.ini) to the odbc subdirectory of the SharePlex variable-data directory. This prevents connection errors when the SharePlex processes connect to the database. If you do not have a DSN defined but want to use one, you can create it in the template files provided in the odbc subdirectory.

Review the following requirements to ensure that the setup succeeds.

• The Database Setup utility must be run as a PostgreSQL Administrator in order to grant SharePlex the required privileges to operate on the database and to create the SharePlex database account.

• (Symfoware only) If the person who is running the setup utility is not a Fujitsu Enterprise PostgreSQL owner, set the environment variable LD_LIBRARY_PATH to include the path to the lib subdirectory in the Fujitsu Enterprise PostgreSQL installation directory. The LD_LIBRARY_PATH is set in the .bash_profile file of the Fujitsu Enterprise PostgreSQL owner.

  Example:

  export LD_LIBRARY_PATH= /opt/symfoserver64/lib:$LD_LIBRARY_PATH

  If you do not set this path, the following error occurs:

  symbol lookup error: /opt/fsepv95client64/odbc/lib/psqlodbca.so: undefined symbol: PQconnectdbParams

• Cloud installations:
  • Common restrictions on privileges in cloud-hosted database services make it difficult for the setup utility to succeed in every possible type of scenario. To ensure that the database setup succeeds, only use the setup utility for the following purposes: To do a first-time database setup with a new SharePlex user, or, to modify an existing SharePlex user that either owns the database or has access to it.

  • You might need to grant usage/privileges on the target schema and tables to the SharePlex user, as shown in the following example:

    Log in as the schema owner, then issue the following commands:

    grant usage on schema schema_name to user_name;

    grant all privileges on all tables in schema schema_name to user_name;

  • For Google Cloud database, grant the following privileges if a user wants to change the owner of a table in replication:

    alter user splex_user createdb createrole login;

    create role role_name;

    grant role_name to splex_user;

Run PG setup for PostgreSQL

Follow the below instructions to run the PG setup for PostgreSQL:

1. Shut down any running SharePlex processes and sp_cop on the source system.

2. Run the pg_setup program from the bin subdirectory of the SharePlex product directory.

   Important! If you installed the SharePlex instance on any port other than the default of 2100, use the -p option to specify the port number. For example, in the following command the port number is 9400.

   $ /users/splex/bin> pg_setup -p9400

Table 16: Setup prompts and responses

A successful setup terminates with a message similar to the following:

Completed SharePlex for PostgreSQL database configuration

SharePlex User name: splexab

Database name: testdb

-- The datasource identifier in the SharePlex configuration is 'r.testdb' --

Installation of pg_hint_plan extension

To install pg_hint_plan:

For On-Prem Databases:

1. Install the RPM according to the PostgreSQL version support matrix at https://github.com/ossc-db/pg_hint_plan.

2. Run the query with the user [Shareplex user]: CREATE EXTENSION IF NOT EXISTS pg_hint_plan;

3. Reboot the instance.

For Cloud PostgreSQL:

1. Set the static parameter in the parameter group: shared_preload_libraries=pg_hint_plan.

2. Reboot the instance.

Solve Installation Problems for PostgreSQL

Contents

Overview

This chapter reviews some common problems that you could experience when installing or running SharePlex for the first time after installation.

Sometimes there are special installation instructions that supersede or supplement certain instructions in this manual. In addition, there can be known issues for this version that you should be aware of during or after installation. Please read the Release Notes for the version of SharePlex that you are installing before you begin the installation process.

Solve database setup problems for PostgreSQL

This section helps you diagnose problems that are associated with the SharePlex database account and connection information that was created with the Database Setup utility when SharePlex was installed on the system.

Note: For more information about Database Setup, see Database Setup Utilities in the SharePlex Reference Guide.

If the issue you are experiencing is not listed in this documentation, search the SharePlex Knowledge Base at:

https://support.quest.com.

The Knowledge Base provides filtering options and links to other resources that can help you use and troubleshoot SharePlex.

PostgreSQL setup issues