Troubleshooting
Problem
This document provides troubleshooting methods for when you attempt to start an instance (db2start) and encounter the following error: SQL1220N The database manager shared memory set cannot be allocated.
Symptom
During the creation of a new instance, the db2start command might fail with the following message:
06/02/2005 11:45:48 0 0 SQL1220N The database manager shared memory set cannot be allocated.
SQL1032N No start database manager command was issued. SQLSTATE=57019
DB2® was unable to allocate its shared memory set.
[{"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Component":"Database Objects\/Config - Instance","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF027","label":"Solaris"}],"Version":"9.7;9.5;9.1","Edition":"Enterprise","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
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Document Information
Modified date:
30 April 2025
UID
swg21217932