Using autogen – Oracle Audio Technologies ORACLE9I B10508-01 User Manual

Page 58

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HP OpenVMS Alpha SYSGEN Parameters

3-14

Oracle9i Installation Guide Release 2 (9.2.0.2) for HP Alpha OpenVMS

** Reserved memory size =

<size>

greater than created SGA size =

<size>

**

** Please reduce reserved memory size to avoid wasting memory. **

** Memory was not reserved for the SGA. SGA size =

<size>

**

** There might be performance advantages to allocating memory for

the SGA in the VMS reserved memory registry. **

If memory is reserved for an SGA, but not enough memory is reserved, then the
instance startup will fail

.

In this case, the amount of reserved memory must be

adjusted, AUTOGEN must be run, and the system must be rebooted

.

For example,

to expand the SGA to 6.5 GB for the TEST instance, use the following commands:

$ MCR SYSMAN

SYSMAN> RESERVED_MEMORY REMOVE ORA_TEST_SGA

SYSMAN> RESERVED_MEMORY ADD ORA_TEST_SGA/SIZE=6656/ALLOCATE/ZERO/PAGE

SYSMAN> EXIT

Then run AUTOGEN and reboot the system.

To avoid rebooting the system, SYSMAN can be used to free the memory
reservation

.

Then you may start the instance

.

The risk is that the system may not

have enough fluid pages to create the SGA

.

Also, the performance advantages of

using reserved memory are not available.

To review memory reservations on your node, run the following command:

$ show memory/reserved

System Memory Resources on 13-JUL-2001 09:57:11.72

Memory Reservations (Pages) Group Reserved In Use Type

ORA_PROD_SGA SYSGBL 5120 0 Allocated

ORA_PROD_SGA SYSGBL 5 0 Page Table

Total (40.04 Mbytes reserved) 5120 0

Please consult Hewlett-Packard if you need more information about reserving
memory.

Using AUTOGEN

Because SYSGEN parameters affect the entire operating system, your system
administrator is the only person who should modify them

.

Of course at some sites,

Additional Information:

For more information about the reserved

memory registry, refer to the Hewlett-Packard documentation.

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