If you want to configure the queue manager so that updates to multiple databases can be included within global units of work, add an XAResourceManager stanza for each database.
If the databases are all managed by the same database manager, each stanza defines a separate database. Each stanza specifies the same SwitchFile, but the contents of the XAOpenString are different because it specifies the name of the database being updated. For example, the stanzas shown in Figure 16 configure the queue manager with the DB2(R) databases MQBankDB and MQFeeDB on UNIX(R) systems.
XAResourceManager: Name=DB2 MQBankDB SwitchFile=db2swit XAOpenString=MQBankDB XAResourceManager: Name=DB2 MQFeeDB SwitchFile=db2swit XAOpenString=MQFeeDB
If the databases to be updated are managed by different database managers, add an XAResourceManager stanza for each. In this case, each stanza specifies a different SwitchFile. For example, if MQFeeDB is managed by Oracle instead of DB2, use the following stanzas on UNIX systems:
XAResourceManager: Name=DB2 MQBankDB SwitchFile=db2swit XAOpenString=MQBankDB XAResourceManager: Name=Oracle MQFeeDB SwitchFile=oraswit XAOpenString=Oracle_XA+Acc=P/myuser/mypassword+SesTm=35+LogDir=/tmp/ora.log+DB=MQFeeDB
In principle, there is no limit to the number of database instances that can be configured with a single queue manager.
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