Defining the VSAM buffer pools

Use the CICS® VR VSAM buffer pools secondary window to tune your CICS® VR run by changing the number of buffers in the VSAM buffer pools.

If you selected VSAM buffer pools from the CICS® VR forward recovery secondary window, shown in Entering recovery parameters, the CICS® VR VSAM buffer pools secondary window is displayed.

Figure 1. VSAM buffer pools secondary window
                          CICSVR VSAM buffer pools         Row 1 to 10 of 11

 For LSR, enable or disable Automatic LSR buffers.  If disable, specify the
 number of LSR buffers or leave all fields blank for NSR.  Then press Enter.

   Automatic LSR buffers ===> YES

   Number of buffers   Pool size
   ________            B512
   ________            B1K
   ________            B2K
   ________            B4K
   ________            B8K
   ________            B12K
   ________            B16K
   ________            B20K
   ________            B24K
   ________            B28K

 Command ===> __________________________________________________________________
  F1=Help     F5=GetDef   F6=SaveDef   F7=Bkwd     F8=Fwd     F10=AutoNO    
 F11=AutoYES F12=Cancel

When you first enter this secondary window, the CICS® VR default values are displayed. Press F5 to obtain the default values from the RCDS. Press F6 to save the currently displayed values; the CICS® VR Default update verification secondary window opens. Press F10 if you do not want to use the automatic calculation of LSR buffers option; press F11 to use this option.

Recommendation: For more efficient recovery jobs, use automatic LSR buffers. For more detailed information about automatic LSR buffers, see BLDVRP: Build the VSAM resource poolCICS® VR Implementation Guide and Reference.

For detailed help information about any of these fields, move the cursor to the field and press F1.