Problem with ST02 Swap Space

[Former Member]

Hi All,

I facing problem with swap space, due to this some time response time is too much. Platform is ECC 6.0 (unicode) WIN 2003/Ora 10 G, ram size is 4 GB and paging in 6 partitions is 1024-2048.

Swaps

0

0

5.754

0

2.749

0

6.856

5.571

615

0

0

0

0

55

2

0

5.167

0

SAPSYSTEMNAME TT1

SAPGLOBALHOST tppls1132

SAPSYSTEM 00

INSTANCE_NAME DVEBMGS00

DIR_CT_RUN $(DIR_EXE_ROOT)\$(OS_UNICODE

DIR_EXECUTABLE $(DIR_INSTANCE)\exe

PHYS_MEMSIZE 512

rdisp/wp_no_dia 4

rdisp/wp_no_btc 1

icm/server_port_0 PROT=HTTP,PORT=80$$

ms/server_port_0 PROT=HTTP,PORT=81$$

rdisp/wp_no_enq 1

rdisp/wp_no_vb 1

rdisp/wp_no_vb2 1

rdisp/wp_no_spo 1

DIR_CLIENT_ORAHOME $(DIR_EXECUTABLE)

login/no_automatic_user_sapstar 0

rsdb/ntab/entrycount 30000

abap/fieldexit yes

abap/heap_area_dia 776480000

abap/heap_area_nondia 776480000

rdisp/max_wprun_time 600

zcsa/table_buffer_area 30000000

rtbb/buffer_length 10000

rsdb/cua/buffersize 3000

rsdb/obj/max_objects 2000

abap/buffersize 300000

Kindly suggest me the tunnig measures I have to follow. I have changed some parameters but unable to resolve the issue.

With regards,

Amit

[Former Member · Accepted solution]

Hi Amit

Buffer the tables on which queries are generated. This would reduce the number of swaps.

Try to find out the most expensive statements and see if there are some missing indexes.

If your RAM size is not large enough you need to increase depending on the database size.

You can also try to implement logon groups to increase the cache hits.

Hope that helps.

[Former Member]

Hi

I think its problem with your paging file size

paging should be 1gb+ 3 times RAM ( for 32 bit)

Change this and restart the system

Regards,

Phani

[Former Member]

Also check the notes 153641

[Former Member]

Hi

Sorry i forgot to tell you some thing

After you change the Paging file, make sure your PHYS_MEMSIZE should be

50% to 70% of the RAM size and also change these parameters

[HS] = size of the physical main memory

[PM] = value of the profile parameter PHYS_MEMSIZE (standard value=[HS])

[BE] = maximum possible number of users (calculated from [PM])

em/initial_size_MB = [PM] |Mbyte |

em/max_size_MB = 20000 |Mbyte |

em/address_space_MB = 512 |Mbyte |

ztta/roll_first = 1 |Byte |

ztta/roll_area = 2000000 |Byte |

ztta/roll_extension = 2000000000 |Byte |

abap/heap_area_dia = 2000000000 |Byte |

abap/heap_area_nondia = 2000000000 |Byte |

abap/heap_area_total = 2000000000 |Byte |

rdisp/ROLL_MAXFS = [BE] * 100 |8KB Block |

rdisp/ROLL_SHM = [BE] * 100 | [BE] * 100 |8KB Block |

rdisp/PG_MAXFS =32768 |8KB Block |

rdisp/PG_SHM = [BE] * 50

Regards

Phani

[Former Member]

Hi Phani,

For NW2004s, the paging file has been changed to 1 times RAM plus 8 GB for 32bit and for 64bit look 153641

Regards

Umesh K

[Former Member]

Hi Umesh,

Thankyou for the information, but i think he is using NW2004

Regards,

Phani

[Former Member]

Hi,

ECC 6.0..So no

Kind Regards

Umesh k

[Former Member]

Hi Debnilay/Phani/Umesh,

First of all thanks a lot for ur help!! At present paging size in all 6 drives is

1024-2048 plz guide how much i need to increase as i'm bit confused in this part. Also, rest of the things i have to follow as per Phani's advice?

regards,

Amit

[Former Member]

Hi,

You can go ahead with the above steps, Even if you have 6 partitions go for the setting of paging file in any of the drives, but to have good performance

Dont set the paging in the drives where SAP data files are existing

Regards,

Phani

[Former Member]

Hi All,

I will do the same and let u know the result....once again thanx to u all....!

regards,

Amit