When rac is started after Oracle11gRAC is stopped, CRS-0184: Cannotcommunicatewit

When rac is started after Oracle11gRAC is stopped, CRS-0184: CannotcommunicatewiththeCRSdaemon is reported.

Oracle 11g RAC after starting rac report CRS-0184: Cannot communicate with the CRS daemon.

#./Crs_stat-t
CRS-0184: Cannot communicate with the CRS daemon.

Check logs

# Pwd
/U01/app/11.2.0/grid/log/expquery01/crsd
# Tail-200 crsd. log | more
....
05:35:48. 659: [CRSD] [1] ENV Logging level for Module: UiServer 0
05:35:48. 659: [CRSMAIN] [1] Checking the OCR device
05:35:48. 660: [CRSMAIN] [1] Sync-up with OCR
05:35:48. 660: [CRSMAIN] [1] Connecting to the CSS Daemon
05:35:48. 660: [CRSMAIN] [1] Getting local node number
05:35:48. 660: [CRSMAIN] [3] Policy Engine is not initialized yet!
05:35:48. 661: [CRSMAIN] [1] Initializing OCR
[CLWAL] [1] clsw_Initialize: OLR initlevel [1, 70000]
05:35:49. 134: [OCRASM] [1] proprasmo: Error in open/create file in dg [DATA]
[OCRASM] [1] SLOS: cat = 8, opn = kgfoOpen01, dep = 15056, loc = kgfokge

05:35:49. 134: [OCRASM] [1] ASM Error Stack:
05:35:49. 221: [OCRASM] [1] proprasmo: kgfoCheckMount returned [6]
05:35:49. 221: [OCRASM] [1] proprasmo: The ASM disk group DATA is not found or not mounted
05:35:49. 222: [OCRRAW] [1] proprioo: Failed to open [+ DATA]. Returned proprasmo () with [26]. Marking location as UNAVAILABLE.
05:35:49. 222: [OCRRAW] [1] proprioo: No OCR/OLR devices are usable
05:35:49. 222: [OCRASM] [1] proprasmcl: asmhandle is NULL
05:35:49. 223: [GIPC] [1] gipcCheckInitialization: possible incompatible non-threaded init from [prom. c: 690], original from [clsss. c: 5326]
05:35:49. 226: [default] [1] clsvactversion: 4: Retrieving Active Version from local storage.
05:35:49. 228: [CSSCLNT] [1] clssgsgrppubdata: group (ocr_expquer-cluster) not found

05:35:49. 228: [OCRRAW] [1] proprio_repairconf: Failed to retrieve the group public data. CSS ret code [20]
05:35:49. 251: [OCRRAW] [1] proprioo: Failed to auto repair the OCR configuration.
05:35:49. 251: [OCRRAW] [1] proprinit: cocould not open raw device
05:35:49. 251: [OCRASM] [1] proprasmcl: asmhandle is NULL
05:35:49. 253: [OCRAPI] [1] a_init: 16! : Backend init unsuccessful: [26]
05:35:49. 254: [CRSOCR] [1] OCR context init failure. Error: PROC-26: Error while accessing the physical storage

05:35:49. 254: [CRSMAIN] [1] Created alert: (: CRSD00111 :): cocould not init OCR, error: PROC-26: Error while accessing the physical storage

05:35:49. 254: [CRSD] [1] [PANIC] CRSD exiting: cocould not init OCR, code: 26
05:35:49. 254: [CRSD] [1] Done.

Problem Determination: it may be that the server is better than the storage after the shutdown, resulting in the storage not found when the crs is started.
Solution: restart the server

Result: After each node is reboot, the crs starts normally and each instance is successfully started.

Recommended reading:

Use the Duplicate function of RMAN to create a physical partition uard

Basic Oracle tutorial-copying a database through RMAN

Reference for RMAN backup policy formulation

RMAN backup learning notes

Oracle Database Backup encryption RMAN Encryption

Use RMAN to back up duplicate to create a replica uard

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