Error "Exceeded Max Concurrent Instances Of Scheduled Job. Max Limit Is 1" When Running Agents (Doc ID 2777480.1)

Last updated on NOVEMBER 11, 2024

Applies to:

Symptoms

Error "Exceeded max concurrent instances of scheduled job. Max limit is 1" in NQscheduler log when running Agents:

One of our scheduler process logs has:

<timestamp> [OBISCH] [TRACE:1] [] [] [ecid: ] [sik: service1] [tid: e5479700] Agent Started: <agent_path>^M
<timestamp> [OBISCH] [ERROR:1] [] [] [ecid: ] [sik: service1] [tid: e5479700] [nQSError: 77030] Oracle BI Presentation Server Connection Error: Unexpected end of file encountered. 4 bytes were requested and 0 bytes were read. [[^M
file: server/NQSScheduler/iBotWebAPI/Src/IBWUtils.cpp; line: 49^M
Error Codes: KUWODMKH
 in call Session retrieveRC^M
]]^M
<timestamp> [OBISCH] [ERROR:1] [] [] [ecid: ] [sik: service1] [tid: e5479700] [nQSError: 77030] Oracle BI Presentation Server Connection Error: Unexpected end of file encountered. 4 bytes were requested and 0 bytes were read. [[^M
file: server/NQSScheduler/iBotWebAPI/Src/IBWUtils.cpp; line: 49^M
Error Codes: KUWODMKH
 in call Session retrieveRC^M
]]^M
<timestamp> [OBISCH] [ERROR:1] [] [] [ecid: ] [sik: service1] [tid: e5479700] [nQSError: 77006] Oracle BI Presentation Server Error: Invalid iBot session ID. [[^M
file: server/NQSScheduler/iBotWebAPI/Src/IBWUtils.cpp; line: 26^M
Error Codes: MV5BAQPD
, in call Session retrieveRC^M
]]^M
<timestamp> [OBISCH] [TRACE:1] [] [] [ecid: ] [sik: service1] [tid: e5479700] Agent Finished: <agent_path>^M
<timestamp> [OBISCH] [ERROR:1] [] [] [ecid: ] [sik: service1] [tid: e5479700] [nQSError: 67020] Exceeded max concurrent instances of scheduled job. Max limit is 1. [[^M
file: server/NQSScheduler/Scheduler/Src/SchRunningInstanceTable.cpp; line: 51^M
]]^M

Cause

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.