DB2 - Problem description
Problem IC70419 | Status: Closed |
CONNECT RESET (IMPLICIT OR EXPLICIT) MAY APPEAR TO HANG WHEN ALTER TABLESPACE TYPE OPERATIONS ARE RUNNING | |
product: | |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 | |
Problem description: | |
An CONNECT RESET operation (either an explicit CONNECT RESET, or a CONNECT TO DB operation that invokes a connect-reset implicitly because a connection already exists) may hang when an ALTER TABLESPACE EXTEND/RESIZE/DROP type of operation is running. The latching protocol used by the connect-reset operation to determine if the disconnecting application has quiesced any tablespaces conflicts with latches that are held by the alter-tablespace operation. Stack dumps of the hanging processes will show: - the connect-reset operation executing in sqlbTerminateApplication and waiting for this readLatch: "Waiting on latch type: (SQLO_LT_SQLB_POOL_CB__readLatch) - Address: (0x643144fb8), Line: 6278, File: sqlbenvi.C" - the alter-tablespace operation typically executing in sqlbAlter... and holding this readLatch: "Holding Latch type: (SQLO_LT_SQLB_POOL_CB__readLatch) - Address: (0x643144fb8), Line: 5210, File: sqlbistorage.h" The fix will prevent the connect-reset from waiting only if no other application is holding a QUIESCE state on the tablespace that is being altered. | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * All users at DB2 V9.7 FP3a and below level * **************************************************************** * PROBLEM DESCRIPTION: * * An CONNECT RESET operation (either an explicit CONNECT * * RESET, or * * a CONNECT TO DB operation that invokes a connect-reset * * * * implicitly because a connection already exists) may hang * * when an * * ALTER TABLESPACE EXTEND/RESIZE/DROP type of operation is * * * * running. * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 LUW Version 9.7 Fix Pack 4 * **************************************************************** | |
Local Fix: | |
available fix packs: | |
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows | |
Solution | |
Problem was fixed in Version 9.7 Fix Pack 4 | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 05.08.2010 02.05.2011 02.05.2011 |
Problem solved at the following versions (IBM BugInfos) | |
9.7.FP4 | |
Problem solved according to the fixlist(s) of the following version(s) | |
9.7.0.4 |