Steps for applying an interim fix to the resolver

To apply IBM-supplied interim fixes to the resolver, you do not need to stop and restart the TCPIP started task or any application programs.

Before you begin

For the short duration of time that the resolver is not running, all resolver requests will fail.

Procedure

Perform the following steps to apply an interim fix to the resolver:

Use SMP/E to apply the interim fix.
If LLA (library lookaside) is running, refresh it by issuing the following operator command:
```
MODIFY LLA,REFRESH
```
Stop the resolver by performing one of the following steps:
- If you have not customized the resolver (you have not created a start procedure), issue the following system operator command:
```
STOP RESOLVER
```
- If you have customized the resolver, issue the following system operator command, where procname is the name of the PROCLIB member that you created:
```
STOP procname
```
Restart the resolver by performing one of the following steps:
- If you have not customized the resolver (you have not created a start procedure), issue the following system operator command:
```
START IEESYSAS.RESOLVER,PROG=EZBREINI,SUB=MSTR,REUSASID=YES
```
- If you have customized the resolver, issue one of the following system operator commands, where procname is the name of the PROCLIB member that you created:
```
START procname,REUSASID=YES
START procname,SUB=MSTR,REUSASID=YES
```
Rule: When you manually stop and then restart the resolver, specify REUSASID=YES on the START command to ensure that a reusable ASID is used. If the resolver address space is stopped enough times and you do not specify REUSASID=YES then when you restart the resolver, all available ASIDs might be exhausted, which would prevent the creation of a new address space on the system. If a new address space is not created on the system, an IPL is required. For more information on tuning parameters for the maximum number of ASIDs on a system, see the MAXUSER parameter in z/OS MVS Initialization and Tuning Reference.