Temporary memory is used for storing the values. Specific variable names are given to the specific program.
There are few parameters that are used for the process of specific temporary storage.
With the help of the following parameters SAP WEB APPLICATION SERVER can use the maximum temporary storage of data.
The following parameters are as follows:
Rdisp/PG_SHM is a value that is used for the specification of size i.e. 8 KB blocks for the paging buffer.
Rdisp/ROLL_MAXFS is a value that is used for the specification of size i.e. 8 KB blocks for the roll file. If we want to access buffer to the roll file we uses roll buffer.
If we want to restrict the amount of heap memory or a private memory that sap dialog work process allocates we use abap/heap_area_dia. With the help of this parameter we can find the availability of enough swap space .This value is specified in bytes.
If we want to restrict the amount of heap memory or a private memory that SAP non-dialog work process allocates we use abap/heap_area_nondia. With the help of this parameter we can find the availability of enough swap space .This value is also specified in bytes.
If we want to find the upper limit in bytes that is available to all the work processes of an SAP application server we use abap/heap_area_total and by using this parameter we can restrict the swap space usage of an application server to a specific amount.
If we want to find out the specific memory pool size that is used by SAP extended memory we use em/initial_size_mb.
Sometimes a heavy amount of data is loaded in to SAP Net weaver BI Accelerator or SAP application server. There can be huge amount of temporary memory consumption if the user loads increases constantly which may sometimes affect the stability of Application Server and it will result to the slow process, so for this we have to remove the temporary space.
REMOVE TEMPORARY SPACE
IF you want to clear all the buffers, you have to shut down the server. IF you want to clear all the SAP buffers you have to use/$sync in the code field and for SAP table buffers you have to use $tab. While using this system will log off and SAP session will get cleared .This can be due to poor buffer quality.
There are the following reasons for the poor buffer quality:
It can be one of the reasons for the poor buffer quality as the development system requires a huge amount of program buffer. So it should not be done in a productive system.
It may be the reason for the poor buffer quality as the offline backup can only be taken while the database is inactive and not in use and. After using offline backup if you want to work with the database then you can’t because you will not be up-to-date. For this we have to use redo log files to recover database after restoring backup.
If we want to reset the buffers we use the $TAB and $SYNC command to reset the entire all the SAP BUFFERS on the application server.
SO, this will be a great idea to tackle with the temporary space.