Solution : https://service.sap.com/sap/support/notes/172747 (SAP Service marketplace login required)
Summary :
This SAP Note provides guidelines for tuning HP-UX kernel parameters to optimize the performance of SAP systems and databases, specifically tailored for various versions of the HP-UX 11.x series. It offers detailed recommendations on parameters requiring adjustment from default settings and provides commands and methodologies for checking and setting these parameters, such as `kctune`. Additionally, the note emphasizes that parameters already exceeding recommendations should not be reduced without a thorough impact analysis. It covers essential aspects such as message parameters, semaphores, shared memory, file systems, asynchronous I/O, and process management. Installation of these settings can be facilitated using provided scripts, while parameters like `filecache_max` and `filecache_min` can be tuned based on system memory assessments.
Key words :
message parameters msgtql 4096 msgmap 4098 msgmnb 65535 msgmax 65535 msgmni 4096 msgseg 32767 msgssz 32 semaphores semmns 16384 semmni 8192 semmap 8194 semmnu 4092 semume 100 shared memory shmmax 0x40000000000, message parameters msgtql 4096 msgmap 4098 msgmnb 65535 msgmax 65535 msgmni 4096 msgseg 32767 semaphores semmns 16384 semmni 8192 semmnu 4092 shared memory shmmax 0x40000000000, message parameters msgtql 4096 msgmnb 65535 msgmni 4096 semaphores semmns 16384 semmni 8192 semmnu 4092 shared memory shmmax 0x40000000000, components bc-cst-mm memory management priority recommendations / additional info category installation information validity, hp-ux itanium 1367498 sap jvm installation prerequisites 1375656 sap netweaver pi system parameters 1437105 operating system limits, 31 1367498 sap jvm installation prerequisites 628131 sap db/maxdb operating system parameters, operating system errors 628131 sap db/maxdb operating system parameters, sam-hp smh cross reference guide hp-ux 11i, nproc 4200 maxusers 128 memory management maxswapchunks 16384 swchunk 8192 filesystem caching dbc_max_pct 8, native thread 541695 ora-00470/ora-00471/ora-00472/ora-00473/ora-00474 546006 problems
Related Notes :
| 1031960 | Recommendations and availability of HP-UX 11.31 |
| 1075118 | SAP on HP-UX: FAQ |
| 1077887 | SAP on HP-UX:mount & filesystem options for best performance |
| 1112627 | SAP on HP-UX: Recommendations for swap and pseudo swap |
| 1329360 | Using Itanium Hyperthreading on HP-UX |
| 1329878 | Using non-default memory base page sizes on HP-UX Itanium |
| 1367498 | SAP JVM installation prerequisites |
| 1375656 | SAP Netweaver PI system parameters |
| 1437105 | Operating system limits for SAP instances |
| 1451361 | DB6: Best Practices for HP-UX systems running DB2 LUW |
| 1457063 | SAP on HP-UX: Consolidating SAP Systems |
| 146289 | Parameter Recommendations for 64-Bit SAP Kernel |
| 146528 | Configuration of R/3 on hosts with much RAM |
| 1472180 | MDM prerequisites and runtime recommendations on HP-UX |
| 1538899 | DB6: SCHED_NOAGE on HP-UX |
| 1580237 | |
| 192822 | FAQ: 32-bit/64-bit R/3-oracle |
| 308375 | 64-bit SAP software |
| 499055 | Error when relinking the Oracle software |
| 534867 | j2ee server on HP-UX unable to create new native thread |
| 541695 | ORA-00470/ORA-00471/ORA-00472/ORA-00473/ORA-00474 |
| 546006 | Problems with Oracle due to operating system errors |
| 628131 | SAP DB/MaxDB operating system parameters on Unix |
| 837670 | Minimum OS patch recommendations for HP-UX |