Installation

Installation

2.5 Process Quotas

Table 2–1 OpenVMS Limits

 

 

 

Value for

Limit Name

OpenVMS Name

Value for ACP

Application

 

 

 

 

AST queue limit

ASTlm

2000 or more

 

Byte count limit

Bytlm

32K + (32K * appn †)

Not less than

 

 

 

100K

Buffered I/O count

BIOlm

Not less than 3 * appn

 

limit

 

 

 

Direct I/O count limit

DIOlm

2000 or more

 

Paging file limit

Pgflquo

Not less than 200K

 

Timer Queue Entry

TQElm

2000 or more

 

limit

 

 

 

†In the table, appn is the number of application processes.

For more information on these limits, see the OpenVMS System Manager's Manual: Essentials.

2.6 Journal Issues

With RTR Version 3 software, the format and content of the transaction journal have changed. In general, if you upgrade or migrate to RTR Version 3 but continue to use the RTR Version 2 API and DECnet, you can use your existing application without change, However, if an RTR Version 2 application stored and used a transaction ID, the changed transaction ID format of RTR Version 3 can cause problems to that application. To correct such a problem, change the application.

A journal file resides on each RTR back-end system. This is not a change from RTR Version 2. Before you shut down RTR Version 2 to bring up RTR Version 3, you must deal with your journal file, using the following procedure:

1.In the Version 2 environment, stop all clients so that no new transactions can be initiated.

2.Monitor the Version 2 journal file to check the status of all current transactions.

3.When all transactions are complete and the journal file is empty, you can delete the journal file at this point, and shut down the entire Version 2 environment as follows:

a.Shut down RTR applications.

b.Shut down RTR Version 2.

c.Install RTR Version 3.

d.Bring up RTR Version 3 including performing the following tasks:

iStart RTR Version 3.

iiCreate the new journal file.

iiiCreate the new operating environment, for example, define facilities.

ivStart the application.

Installation 2–3

Page 15
Image 15
Compaq AAR-88LB-TE manual Journal Issues, Installation 2.5 Process Quotas, 1 OpenVMS Limits