SharePlex 8.6.6 - Upgrade Guide

Configure Replication to a SQL or XML file target

Overview

SharePlex can post replicated Oracle data to a file formatted as SQL or XML. This data is written as a sequential series of operations as they occurred on the source, which can then be posted in sequential order to a target database or consumed by an external process or program.

This chapter guides you through the configuration process to support replication to this target.

Note: For the platforms, datatypes and operations that are supported when using SharePlex to replicate to a SQL or XML file, see the SharePlex Release Notes.

Configure SharePlex on the source

On the source, create a SharePlex configuration file that specifies capture and routing information. The structure that is required in a configuration file varies, depending on your replication strategy, but this shows you the required syntax for routing data to a SQL or XML file.

where:

• SID is the Oracle SID of the source Oracle database.

• src_owner.table is the owner and name of the source table.

• !file is a required keyword that directs Post to write to a file.
• tgt_owner.table is optional and specifies the owner and name of the target table. Use if either component is different from that of the source table.
• host is the name of the target system.

Note:  For more information, see Create configuration files.

Source configuration example:

The following example replicates the parts table in schema PROD from Oracle instance ora112 to a file on target system sysprod.

Configure SharePlex on the target

To output data in XML format

By default, SharePlex formats data that it writes to a file in XML format, and you do not need to run target setup unless you want to change properties of the output file (see View and change target settings.)

To output data in SQL format

1. Start sp_cop.
2. Start sp_ctrl.

3. Issue the following required target commands to output the records in SQL. Note: Use all lower-case characters.

   target x.file [queue queuename] set format record=sql

   target x.file [queuequeuename] set sql legacy=yes

   where: queue queuename constrains the action of the command to the SharePlex Post process that is associated with the specified queue.

   See View and change target settings for descriptions of these settings and other optional properties that you can set.

View and change target settings

To view current property settings for output to a file, use the following command:

target x.file show

To change a setting, use the following target command.

target x.file [queue queuename] set [category] property=value

target

About the SQL

Every transaction in a SQL-formatted file is headed by a comment that includes the transaction sequence within the SQL file and a unique transaction ID. A comment line at the end of the SQL file has the number of lines in the file. For example, the following is a SQL file with one transaction. In this example the transaction id is 2-113319. The file has nine lines.

/installed/vardir> cat opx/0000000010_20140305140820_legacy.sql

-- 0000000001 2-113319 03052014140813 03052014140813

DELETE FROM "ROBIN"."TEST_TYPES" WHERE ORA_NUMBER = '22345' AND ROWNUM = 1;

INSERT INTO "ROBIN"."TEST_TYPES" (ORA_NUMBER, ORA_DATE, ORA_RAW, ORA_ROWID,

ORA_FLOAT, ORA_CHAR, ORA_VARCHAR2, ORA_TIMESTAMP, ORA_TIMESTAMP_TZ,

ORA_TIMESTAMP_LTZ) VALUES('22345', '08132066000000', '0123456789ABCDEF'

, 'AAAAAAAAAAAAAAAAAA', '12350', 'Character ', 'Variable data'

, '10201998021300.22000', '06172002080000.00000', '06172002160000.00000');

COMMIT;

-- EOF 0000000009

About the XML

The XML format is separated into operation and schema "types" for easier consumption. They are actually the same when viewed from an XSD perspective and are not distinct types. The template XML represents all possible attributes and elements. The individual XML represents the bare minimum output for each supported operation.

After startup, the first time that Post writes a change record for any given table, it first writes a schema record for that table. Each schema record contains the table name and details of interest for each columns. A schema record is written only once for each table during a Post run, unless there is a change to that schema, and then a new schema record is written. If Post stops and starts, schema records are written again, once for each table as Post receives a change record for it.

Schema record template

<?xml version="1.0" encoding="UTF-8" ?>  
<?opentarget version="1.0" ?>  
<opentarget>  
    <txn  
        id="xs:integer"  
        oracleTxnId="xs:string"   
        commitTime="xs:dateTimeStamp" />  
    <tbl  
        name="xs:string"  
        utcOffset="xs:integer"
        <cmd ops="schema">  
            <schema>  
                <col  
                    name="xs:string"  
                    xmlType="xs:string"  
                    key="xs:boolean"  
                    nullable="xs:boolean"  
                    length="xs:integer"  
                  />  
            </schema>  
        </cmd>  
    </tbl>  
</opentarget>

Table 6: Explanation of schema template (* = optional)

Operation record template

<?xml version="1.0" encoding="UTF-8" ?>
<?opentarget version="1.1" ?>
<opentarget>
    <txn
        id="xs:integer" 
        msgIdx="xs:integer" 
        msgTot="xs:integer" 
        oracleTxnId="xs:string"
        commitTime="xs:dateTimeStamp"
        userId="xs:string" />

    <tbl 
        name="xs:string"
        <cmd ops="xs:string">
            <row id="xs:string">
                <col name="xs:string"></col>
                <lkup>
                    <col name="xs:string"></col>
                </lkup>
            </row>
        </cmd>
    </tbl>
</opentarget>

Table 7: Explanation of operation template (* = optional)

Note: The id and msgIdx attributes together uniquely identify an operation.

Supported datatypes

See the SharePlex Release Notes for a chart that shows how Oracle datatypes are converted to XML.

Sample XML records

Source table

This is the table for which the sample operations are generated.

SQL> desc products

Source DML operations

insert into products values (230117, ‘Hamsberry vintage tee, cherry’, 4099);
commit;
update products set price=3599 where product_id=230117 and price=4099;
commit;
delete products where product_id=230117;
commit;
truncate table products;

Schema record

<?xml version="1.0" encoding="UTF-8"?>
<?opentarget version="1.1"?>
<opentarget>
<txn id="2218316945" commitTime="2014-10-10T13:18:43" userId="85" oracleTxnId="3.10.1339425" />
<tbl name="MFG.PRODUCTS" utcOffset="-5:00">
<cmd ops="schema">
<schema>
<col name="PRODUCT_ID" xmlType="decimal" key="true" nullable="false" length="22" />
<col name="DESCRIPTION" xmlType="string" key="false" nullable="true" length="600" />
<col name="PRICE" xmlType="decimal" key="false" nullable="true" length="22" />
</schema>
</cmd>
</tbl>
</opentarget>

Insert record

<?xml version="1.0" encoding="UTF-8"?>
<?opentarget version="1.1"?>
<opentarget>
<txn id="2218316945" msgIdx="1" msgTot="1" commitTime="2014-10-10T13:18:43" userId="85" oracleTxnId="3.10.1339425" />
<tbl name="MFG.PRODUCTS">
<cmd ops="ins">
<row id="AAAmDbAAEAAApRrAAA">
<col name="PRODUCT_ID">230117</col>
<col name="DESCRIPTION">Hamsberry vintage tee, cherry</col>
<col name="PRICE">4099</col>
</row>
</cmd>
</tbl>
</opentarget>

Update record

<?xml version="1.0" encoding="UTF-8"?>
<?opentarget version="1.1"?>
<opentarget>
<txn id="2218318728" msgIdx="1" msgTot="1" commitTime="2014-10-10T13:19:12" userId="85" oracleTxnId="1.17.970754" />
<tbl name="MFG.PRODUCTS">
<cmd ops="upd">
<row id="AAAmDbAAEAAApRrAAA">
<col name="PRICE">3599</col>
<lkup>
<col name="PRODUCT_ID">230117</col>
<col name="PRICE">4099</col>
</lkup>
</row>
</cmd>
</tbl>
</opentarget>

Delete record

<?xml version="1.0" encoding="UTF-8"?>
<?opentarget version="1.1"?>
<opentarget>
<txn id="2218319446" msgIdx="1" msgTot="1" commitTime="2014-10-10T13:19:25" userId="85" oracleTxnId="5.23.1391276" />
<tbl name="MFG.PRODUCTS">
<cmd ops="del">
<row id="AAAmDbAAEAAApRrAAA">
<lkup>
<col name="PRODUCT_ID">230117</col>
</lkup>
</row>
</cmd>
</tbl>
</opentarget>

Truncate record

<?xml version="1.0" encoding="UTF-8"?>
<?opentarget version="1.1"?>
<opentarget>
<txn id="2218319938" commitTime="1988-01-01T00:00:00" userId="85" oracleTxnId="11.4.939801" />
<tbl name="MFG.PRODUCTS">
<cmd ops="trunc" />
</tbl>
</opentarget>

File storage and aging

Post writes to a series of files. The active working file is prepended with the label of current_ and is stored in the opx/current subdirectory of the variable-data directory.

Important: Do not open or edit the current_ file.

Post uses the max_records, max_size and max_time parameters to determine the point at which to start a new active file. When this switch occurs, Post moves the processed data to a sequenced file in the opx subdirectory of the variable-data directory. The file names include the name of the post queue, the time and date, and an incrementing ID.

SQL files:

/installed/vardir> ls -1 opx

0000000000_20140305130858_legacy.sql

0000000001_20140305131130_legacy.sql

0000000002_20140305131212_legacy.sql

0000000003_20140305133835_legacy.sql

0000000004_20140305134028_legacy.sql

XML files:

/installed/vardir> ls -1 opx

0000000000_20140305130858_prodsys.XML

0000000001_20140305131130_prodsys.XML

0000000002_20140305131212_prodsys.XML

0000000003_20140305133835_prodsys.XML

0000000004_20140305134028_prodsys.XML

To force a file switch

The current file cannot be viewed or consumed without stopping Post. To access the data in the current file, you can use the target command with the switch option to move the data to a sequenced file, from which it can then be consumed or viewed. After issuing this command, the switch occurs after Post processes a new record.

target x.file [queue queuename] switch