APAR status
Closed as program error.
Error description
To analyse network bottlenecks, it is interesting to know how many bytes are being transferred by a specific session between client and server. This can be determined through sysmaster table sysnetworkio, using the columns net_read_bytes and net_write_bytes. While these numbers can be obtained correctly for Shared Memory Connections, this doesn't work for TCP Connections. For a TCP Connection, the value for net_read_bytes is always 0. The value for net_write_bytes looks fine as it is non-zero. An example query to demonstrate this behaviour (while connected via tcp): select n.sid::char(8) as sid, s.username[1,8], n.net_read_bytes, n.net_write_bytes, n.net_protocol from sysnetworkio as n, syssessions s where n.sid = s.sid order by 4 desc ... for tcp connects, net_read_bytes is always 0 while using the related column net_read_cnt instead of net_read_bytes shows non-zero values. select n.sid::char(8) as sid, s.username[1,8], n.net_read_cnt, n.net_write_cnt, n.net_protocol from sysnetworkio as n, syssessions s where n.sid = s.sid order by 4 desc
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * IDS 11.50 users * **************************************************************** * PROBLEM DESCRIPTION: * * Column net_read_bytes in sysnetworkio table is always zero * * for user sessions connecting through tcp * **************************************************************** * RECOMMENDATION: * * Upgrade to 11.50xC7 and above. * ****************************************************************
Problem conclusion
Problem first fixed in IDS 11.50xC7.
Temporary fix
Comments
APAR Information
APAR number
IC66855
Reported component name
IBM IDS ENTRP E
Reported component ID
5724L2304
Reported release
B15
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-03-03
Closed date
2010-11-15
Last modified date
2010-11-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
IBM IDS ENTRP E
Fixed component ID
5724L2304
Applicable component levels
RB15 PSY
UP
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Document Information
Modified date:
15 November 2010