CASXO0001S XA Resource Manager initialization error. Resource XAT resource name open failed, reason return-code

The Resource manager for the XAT resource returned a non-zero value to the xa_open call.
Restriction: This topic applies only when the Enterprise Server feature is enabled.

Where the return code means :

 
       -1  An error occured in the transaction manager 
       -2  Asynchronous operation already outstanding 
       -3  A resource manager error occurred 
       -4  The XID is not valid 
       -5  Invalid arguments were given 
       -6  Routine invoked in an improper context 
       -7  Resource Manager unavailable 
       -8  the XID already exists 
       -9  Resource Manager doing work outside global transaction
System Action:
The XA resource entry has been disabled.
Resolution:
Check that the Database Manager has been started, if necessary.
Module:
dfhexa
Destination:
Console and standard error.
Parent topic: CASXO0000 - CASXO0019