User upgraded from R17 to R19 on Z/os 2.1 environment. Everything worked fine. After that they upgraded Z/OS to 2.2 and everything still worked well. They then went back to Z/OS 2.1 and now he's getting the following error when trying to start the collection: DT005E: DB2 Error code 00080008 and PDT0507 DETECTOR MODIFY FAILED/DB2 SSID DBXX INVALID OR NOT ACTIVE
The DB2 subsystem in problem(named DBP1) was defined in two different LPARS(S22 and SYSD). Xmanager has XSYS=Y specified. Collection for the subsystem in problem(DBP1) was already active in one of the two LPARS.Turning off XSYS=N and recycling the Xmanager on SYSD resolved the problem.