Zowe:Set-up messages on z/OS

I experienced the messages below when using Zowe. I’ve included additional text to further explain the messages

BPXP005I A FORK OR SPAWN ERROR WAS ENCOUNTERED. RETURN CODE 00000070 REASON CODE 0B250012

Unix return code  00000070 maps to EAGAIN (the resource is temporarily unavailable)

Unix reason code 0B250012 maps to JRMaxChild (the maximum number of processes for this user ID has been exceeded)

Increase the appropriate value MAXPROCSYS or MAXPROCUSER. This can be done dynamically using the SETOMVS command.

Use

• D OMVS,O to display maxprocuser
• setomvs MAXPROCUSER=40

BPXI039I SYSTEM LIMIT SHRLIBRGNSIZE HAS REACHED 90% OF ITS CURRENT CAPACITY OF 83886080

See Tuning the z/OS shared library region.

JVMSHRC020E An error has occurred while opening semaphore
JVMSHRC336E Port layer error code = -262894

JVMSHRC337E Platform error message: semctl : EDC5111I Permission denied. (errno2=0x070E0303)
JVMSHRC028E Permission Denied
JVMSHRC840E Failed to start up the shared cache.
JVMJ9VM015W Initialization error for library j9shr29(11): JVMJ9VM009E J9VMDllMain failed
Error: Could not create the Java Virtual Machine

-262894 is SEMCTL EACCESS – Permission denied.

The owner of the shared file cache was not the userid trying to use it.

chown ZWESVUSR:SYS1 *

Changed the files, such as

ZWESVUSR SYS1     314572800 Feb  9 08:43 C290M17F1A64S_zoweGW_G43L00                   
ZWESVUSR SYS1          32 Feb 10 06:35 C290M17F1A64_semaphore_zoweGW_G43L00            
ZWESVUSR SYS1          40 Feb 10 06:35 C290M17F1A64_memory_zoweGW_G43L00               

JVMSHRC020E An error has occurred while opening semaphore
JVMSHRC336E Port layer error code = -197360

JVMSHRC337E Platform error message: semget : EDC5129I No such file or directory.

-197360 is SEMGET ENOENT – No such file, directory, or IPC member exists.

I got these trying to restore a sharedclasses cache, when I did not have access to the file.

/usr/lpp/java/J17.0_64/bin/java -Xshareclasses:cacheDir=/u/tmp/zowec,name=zoweGW,restoreFromSnapshot

I gave the userid access and it worked

chmod 777 /u/tmp/zowec/javasharedresources/*

JVMSHRC659E An error has occurred while opening shared memory
JVMSHRC336E Port layer error code = -459502

JVMSHRC337E Platform error message: shmctl : EDC5111I Permission denied.
JVMSHRC028E Permission Denied
JVMSHRC626I The stats of the shared cache cannot be obtained since a valid shared cache does not exist.
JVMJ9VM015W Initialization error for library j9shr29(11): JVMJ9VM009E J9VMDllMain failed

-459502 is SHMCTL EACCESS -Permission is denied.

The userid issuing the command does not have access to the resource.

The documentation says the shared class cache is created with ONLY USER read/write access by default unless the groupAccess command-line suboption is used, in which case the access is read/write for user and groups.

Note: Users with super user authority gid=0(SYS1) can issue the command with no additional authority.

To find the group list the directories containing the cache, for example if /var/zosmf/data/logs/.classCache/ was specified use ls -ltr /var/zosmf/data/logs/.classCache/javasharedresources.

For me it had owner IZUSVR group IZUADMIN.

I used the RACF command connect COLIN group(IZUADMIN) to connect the userid to the group. Even then the command failed, because groupAccess had not been defined on the -Xshareclasses… parameter. I had to delete the cache so it was recreated next time theJVM started. Then the java -Xshareclasses:cacheDir=/var/zosmf/data/logs/.classCache,name=liberty-IZUSVR,verbose,printStats worked.

JVMSHRC023E   Cache does not exist

I had

-Xshareclasses:cacheDir=/javasc,name=izusvr1cache,printStats

I had to remove the printStats.

JVMSHRC364E SH_OSCachesysv::acquireWriteLock() call to j9shsem_wait on semid … has failed with error -328433.

-328433 is SEMOP – The parameter is incorrect.

You can use the ipcs Unix commands to display the semaphore ids.

JVMSHRC005I No shared class caches available

I was using

/usr/lpp/java/J11.0_64/bin/java -Xshareclasses:cacheDir=/global/zosmf/data/logs/.classCache/,verbose,listAllCaches

to display information about shared cache usage, and kept getting the JVMSHRC005I No shared class caches available message. I experienced two reasons for this.

1. The information in the file, was for last week’s IPL, and the the information in today’s memory was invalid.
2. I was using the wrong level of Java. Once I used the right level of Java it worked!

restoreFromSnapshot

IBMUSER:/u/ibmuser: >cd /u/tmp/zowec
IBMUSER:/u/tmp/zowec: >/usr/lpp/java/J17.0_64/bin/java -Xshareclasses:cacheDir=/u/tmp/zowec,name=zoweGW,restoreFromSnapshot
JVMSHRC020E An error has occurred while opening semaphore
JVMSHRC336E Port layer error code = -197360
JVMSHRC337E Platform error message: semget : EDC5129I No such file or directory.
JVMSHRC727E An error has occurred in creating the new non-persistent shared cache
JVMSHRC808I Compressed references shared cache “zoweGW” is destroyed. Use option -Xnocompressedrefs if you want to destroy a non-com pressed references cache.
JVMSHRC699E Failed to restore the non-persistent shared cache “zoweGW” from the snapshot

This may be connected to the the following

The following files were in the directory

-rw-r--r-- 1 ZWESVUSR ZWEADMIN ... C290M17F1A64_semaphore_zoweGW_G43L00
-rw-r--r-- 1 ZWESVUSR ZWEADMIN ... C290M17F1A64_memory_zoweGW_G43L00

For example the above files were had owner: ZWESVUSR group: ZWEADMIN.

The userid was in group ZWEADMIN, and so does not get R/W access to the files.

Errno2

• 0x071D0303: JRIpcDenied: Access was denied because the caller does not have the correct permission.
• 0x053b006c: JRFileNotThere: The requested file does not exist
• 0x0594003d: JRDirNotFound: A directory in the pathname was not found