Invalid SQLHOSTS

When using Multi-Tier drivers, "invalid sqlhosts" errors may indicate that your Database Agent was built against a version of Informix which did not support SQLHOSTS server group entries. To remedy this problem, pursue the following options:
1. Create a separate sqlhosts file, e.g., sqlhosts2. (This second sqlhosts file cannot contain server group entries.) Then, set the INFORMIXSQLHOSTS environment variable to point to this new file. For example:
```
export INFORMIXSQLHOSTS=/dbs/informix/32bit/7.3/etc/sqlhosts2
```
2. Relink your database agent. This may enable your agent to work with the existing sqlhosts file.
If you are using a Single-Tier driver, the $INFORMIXDIR/etc/sqlhosts file (or the sqlhosts information in the Windows registry) should be checked, to confirm that all data therein is correct and contains supported values.
If you are working with IBM Informix Dynamic Server, IBM Informix Universal Server, or IBM Informix OnLine Dynamic Server, also check the DBSERVERNAME, DBSERVERALIASES, and NETTYPE parameters in the $ONCONFIG configuration file or within the informixserver entries in the registry.
If you are working with IBM Informix SE, check the dbservername, nettype, hostname, and servicename fields in the sqlhosts file to make sure that you have entered the correct values.
For additional information, refer to your Informix Administrator's Guide.